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schoblaska/openings.csv

Created October 7, 2015 18:21
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openings.csv
ECO Count Name PGN
A40 2,160,508 Queen Pawn Opening 1.d4
B00 1,398,214 King's Pawn 1.e4
C20 1,050,507 King Pawn Game 1.e4 e5
B20 955,201 Sicilian Defense 1.e4 c5
D00 661,940 Queen Pawn Game 1.d4 d5
A45 651,186 Indian Game 1.d4 Nf6
C44 571,079 King's Knight Opening: Normal Variation 1.e4 e5 2.Nf3 Nc6
C40 532,194 King's Knight Opening 1.e4 e5 2.Nf3
B50 517,282 Sicilian Defense: Modern Variations 1.e4 c5 2.Nf3 d6
A50 465,572 Indian Game: Normal Variation 1.d4 Nf6 2.c4
B54 379,048 Sicilian Defense: Modern Variations 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4
B56 312,088 Sicilian Defense: Modern Variations 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3
C00 271,898 French Defense 1.e4 e6
E00 222,276 Indian Game: East Indian Defense 1.d4 Nf6 2.c4 e6
A04 216,871 Zukertort Opening: Symmetrical Variation 1.Nf3 Nf6
E10 192,139 Indian Game: Anti-Nimzo-Indian 1.d4 Nf6 2.c4 e6 3.Nf3
B90 178,989 Sicilian Defense: Najdorf Variation 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6
E61 171,598 Indian Game: West Indian Defense 1.d4 Nf6 2.c4 g6
C00 163,098 French Defense: Normal Variation 1.e4 e6 2.d4
A46 163,032 Indian Game: Knights Variation 1.d4 Nf6 2.Nf3
C10 156,006 French Defense: Normal Variation 1.e4 e6 2.d4 d5 3.Nc3
C60 154,597 Ruy Lopez 1.e4 e5 2.Nf3 Nc6 3.Bb5
D30 154,172 Queen's Gambit Declined 1.d4 d5 2.c4 e6
B57 150,380 Sicilian Defense: Modern Variations, Main Line 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6
B32 146,515 Sicilian Defense: Old Sicilian, Open 1.e4 c5 2.Nf3 Nc6 3.d4
E61 145,564 King's Indian Defense: 3.Nc3 1.d4 Nf6 2.c4 g6 3.Nc3
D10 144,044 Slav Defense 1.d4 d5 2.c4 c6
E77 142,784 King's Indian Defense: Six Pawns Attack 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6
E70 138,635 King's Indian Defense: Normal Variation 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4
B40 133,708 Sicilian Defense: French Variation 1.e4 c5 2.Nf3 e6
E91 133,031 King's Indian Defense: Orthodox Variation 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2
D11 129,253 Slav Defense: Modern Line 1.d4 d5 2.c4 c6 3.Nf3
B56 120,572 Sicilian Defense: Classical Variation 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6
D02 114,155 Queen Pawn Game: Zukertort Variation 1.d4 d5 2.Nf3
A10 112,630 English Opening 1.c4
C68 104,191 Ruy Lopez: Columbus Variation 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4
A49 103,024 Indian Game: Pseudo-King's Indian Variation 1.d4 Nf6 2.Nf3 g6
B40 98,070 Sicilian Defense: French Variation, Open 1.e4 c5 2.Nf3 e6 3.d4 cxd4
A15 97,586 English Opening: Anglo-Indian Defense, King's Knight Variation 1.c4 Nf6 2.Nf3
E90 93,590 King's Indian Defense: Normal Variation, Rare Defenses 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3
D37 89,945 Queen's Gambit Declined: Three Knights Variation 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3
E12 88,816 Queen's Indian Defense 1.d4 Nf6 2.c4 e6 3.Nf3 b6
E20 88,633 Nimzo-Indian Defense 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4
D15 86,889 Slav Defense: Three Knights Variation 1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3
B12 80,423 Caro-Kann Defense 1.e4 c6 2.d4
D43 79,676 Semi-Slav Defense 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6
C78 78,275 Ruy Lopez: Morphy Defense 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O
B12 77,300 Caro-Kann Defense 1.e4 c6 2.d4 d5
B30 74,534 Sicilian Defense: Old Sicilian 1.e4 c5 2.Nf3 Nc6
B07 71,740 Pirc Defense 1.e4 d6 2.d4 Nf6 3.Nc3
C88 71,039 Ruy Lopez: Closed 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3
C92 70,984 Ruy Lopez: Closed Variations 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d6 9.h3
B15 70,036 Caro-Kann Defense: Main Line 1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4
D45 69,954 Semi-Slav Defense: Main Lines 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3
B45 69,716 Sicilian Defense: Paulsen Variation, Normal Variation 1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3
E60 68,825 King's Indian Defense: Normal Variation, King's Knight Variation 1.d4 Nf6 2.c4 g6 3.Nf3
C50 67,228 Italian Game 1.e4 e5 2.Nf3 Nc6 3.Bc4
D80 66,937 Gruenfeld Defense 1.d4 Nf6 2.c4 g6 3.Nc3 d5
D02 64,906 Queen Pawn Game: Symmetrical Variation 1.d4 d5 2.Nf3 Nf6
D45 63,364 Semi-Slav Defense: Normal Variation 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7
E15 63,203 Queen's Indian Defense: Fianchetto Variation 1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3
E40 56,887 Nimzo-Indian Defense: Normal Line 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3
D31 56,565 Queen's Gambit Declined: Queen's Knight Variation 1.d4 d5 2.c4 e6 3.Nc3
D35 56,079 Queen's Gambit Declined: Normal Defense 1.d4 d5 2.c4 e6 3.Nc3 Nf6
A56 55,125 Benoni Defense: Modern Variation 1.d4 Nf6 2.c4 c5
C84 55,063 Ruy Lopez: Closed Variations 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7
B23 54,148 Sicilian Defense: Closed Variation 1.e4 c5 2.Nc3
B44 54,064 Sicilian Defense: Paulsen Variation 1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6
C03 53,108 French Defense: Tarrasch Variation 1.e4 e6 2.d4 d5 3.Nd2
B33 53,079 Sicilian Defense: Old Sicilian, Normal 1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6
B07 51,766 Pirc Defense 1.e4 d6 2.d4 Nf6
E92 51,091 King's Indian Defense: Orthodox Variation 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5
B10 49,504 Caro-Kann Defense 1.e4 c6
E80 48,821 King's Indian Defense: Saemisch Variation 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3
B01 47,381 Scandinavian Defense 1.e4 d5
B22 46,692 Sicilian Defense: Alapin Variation 1.e4 c5 2.c3
C44 45,580 Scotch Game 1.e4 e5 2.Nf3 Nc6 3.d4
D11 45,361 Slav Defense: Quiet Variation 1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.e3
A20 45,299 English Opening: King's English Variation 1.c4 e5
B07 44,536 Pirc Defense 1.e4 d6 2.d4 Nf6 3.Nc3 g6
B06 44,448 Modern Defense: Standard Line 1.e4 g6 2.d4 Bg7 3.Nc3
E97 43,921 King's Indian Defense: Orthodox Variation, Aronin-Taimanov Defense 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O Nc6
A57 43,672 Benko Gambit 1.d4 Nf6 2.c4 c5 3.d5 b5
C11 42,748 French Defense: Classical Variation 1.e4 e6 2.d4 d5 3.Nc3 Nf6
E32 42,386 Nimzo-Indian Defense: Classical Variation 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2
B43 41,754 Sicilian Defense: Kan Variation, Knight Variation 1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Nc3
B41 41,700 Sicilian Defense: Kan Variation 1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6
B70 41,570 Sicilian Defense: Dragon Variation 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6
C42 41,348 Russian Game 1.e4 e5 2.Nf3 Nf6
C15 40,612 French Defense: Winawer Variation 1.e4 e6 2.d4 d5 3.Nc3 Bb4
D45 40,125 Semi-Slav Defense: Stoltz Variation 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Qc2
B80 39,096 Sicilian Defense: Scheveningen Variation 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6
D16 38,594 Slav Defense: Alapin Variation 1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.a4
A15 37,671 English Opening: Anglo-Indian Defense, King's Indian Formation 1.c4 Nf6 2.Nf3 g6
B15 37,419 Caro-Kann Defense: Standard, Unorthodox Replies 1.e4 c6 2.d4 d5 3.Nc3
C02 36,557 French Defense: Advance Variation 1.e4 e6 2.d4 d5 3.e5
A06 36,352 Zukertort Opening: Queen Pawn Defense 1.Nf3 d5
B95 36,228 Sicilian Defense: Najdorf Variation 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6
A15 35,926 English Opening: Anglo-Indian Defense, Mikenas-Carls Variation 1.c4 Nf6
B47 35,830 Sicilian Defense: Paulsen Variation, Bastrikov Variation 1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 Qc7
C45 34,966 Scotch Game 1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4
B62 34,775 Sicilian Defense: Richter-Rauzer, 6...e6 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6
E73 33,861 King's Indian Defense: Normal Variation, Standard Development 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Be2
D90 33,808 Gruenfeld Defense: Three Knights Variation 1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7
A80 32,958 Dutch Defense 1.d4 f5
B75 32,680 Sicilian Defense: Dragon Variation, Yugoslav Attack Early deviations 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.f3
D15 32,645 Slav Defense: Two Knights Attack 1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4
C90 32,315 Ruy Lopez: Closed Variations, Closed Defense 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d6
E94 32,189 King's Indian Defense: Orthodox Variation 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O
B30 32,018 Sicilian Defense: Nyezhmetdinov-Rossolimo Attack 1.e4 c5 2.Nf3 Nc6 3.Bb5
B94 31,436 Sicilian Defense: Najdorf Variation 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5
C46 31,288 Three Knights Opening 1.e4 e5 2.Nf3 Nc6 3.Nc3
C16 30,397 French Defense: Winawer Variation, Advance Variation 1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5
E00 29,931 Catalan Opening 1.d4 Nf6 2.c4 e6 3.g3
C05 29,821 French Defense: Tarrasch Variation, Closed Variation 1.e4 e6 2.d4 d5 3.Nd2 Nf6
B60 28,612 Sicilian Defense: Richter-Rauzer Variation 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5
A07 28,515 King's Indian Attack 1.Nf3 d5 2.g3
A05 28,441 King's Indian Attack: Symmetrical Defense 1.Nf3 Nf6 2.g3 g6
D27 28,269 Queen's Gambit Accepted: Classical Defense, Main Lines 1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5 6.O-O a6
B62 28,204 Sicilian Defense: Richter-Rauzer Variation, Neo-Modern Variation Early deviations 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 7.Qd2 a6
C18 28,030 French Defense: Winawer Variation, Advance Variation 1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.a3 Bxc3+ 6.bxc3
A00 27,279 Hungarian Opening 1.g3
C65 27,068 Ruy Lopez: Berlin Defense 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6
B72 26,876 Sicilian Defense: Dragon, 6.Be3 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3
B92 26,352 Sicilian Defense: Najdorf Variation, Opocensky Variation 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Be2
C46 26,249 Four Knights Game 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6
A30 25,772 English Opening: Symmetrical Variation 1.c4 c5
D26 25,689 Queen's Gambit Accepted: Classical Defense 1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5
B40 25,573 Sicilian Defense: French Variation, Normal 1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nf6
B06 25,376 Modern Defense: Standard Defense 1.e4 g6 2.d4 Bg7 3.Nc3 d6
C02 25,361 French Defense: Advance Variation 1.e4 e6 2.d4 d5 3.e5 c5 4.c3
C02 24,920 French Defense: Advance Variation, Paulsen Attack 1.e4 e6 2.d4 d5 3.e5 c5 4.c3 Nc6 5.Nf3
B13 24,869 Caro-Kann Defense: Panov Attack 1.e4 c6 2.d4 d5 3.exd5 cxd5 4.c4 Nf6 5.Nc3
E67 24,711 King's Indian Defense: Fianchetto Variation, Classical Fianchetto 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Nf3 d6 5.g3 O-O 6.Bg2 Nbd7 7.O-O e5
E06 24,616 Catalan Opening: Closed Variation 1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 Be7 5.Nf3
C55 24,501 Italian Game: Two Knights Defense 1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6
B34 24,190 Sicilian Defense: Accelerated Dragon, Modern Variation 1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 g6 5.Nc3
A40 24,169 Horwitz Defense 1.d4 e6
B13 23,861 Caro-Kann Defense: Panov Attack 1.e4 c6 2.d4 d5 3.exd5 cxd5 4.c4
B06 23,664 Robatsch (Modern) Defense 1.e4 g6 2.d4 Bg7
B06 23,351 Modern Defense: King Pawn Fianchetto 1.e4 g6
E12 23,217 Queen's Indian Defense: Petrosian Variation 1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.a3
D17 23,145 Slav Defense: Czech Variation 1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.a4 Bf5
A16 22,922 English Opening: Anglo-Indian Defense, Queen's Knight Variation 1.c4 Nf6 2.Nc3
D31 22,905 Semi-Slav Defense: Acclerated Move Order 1.d4 d5 2.c4 e6 3.Nc3 c6
A45 22,613 Trompowsky Attack 1.d4 Nf6 2.Bg5
B57 22,604 Sicilian Defense: Sozin, not Scheveningen 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bc4
D47 22,526 Semi-Slav Defense: Semi-Meran Variation 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4
B36 22,501 Sicilian Defense: Accelerated Dragon, Maroczy Bind 1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 g6 5.c4
B24 22,217 Sicilian Defense: Closed Variation, Fianchetto Variation 1.e4 c5 2.Nc3 Nc6 3.g3
B51 22,096 Sicilian Defense: Canal Attack 1.e4 c5 2.Nf3 d6 3.Bb5+
D55 22,071 Queen's Gambit Declined: Neo-Orthodox Variation, Main Line 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 h6 7.Bh4
A13 22,043 English Opening: Neo-Catalan 1.c4 e6 2.Nf3 d5 3.g3 Nf6
B03 21,965 Alekhine Defense: Normal Variation 1.e4 Nf6 2.e5 Nd5 3.d4 d6
D46 21,676 Semi-Slav Defense: Main Lines 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3
B33 21,572 Sicilian Defense: Lasker-Pelikan Variation 1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e5
E81 21,395 King's Indian Defense: Saemisch Variation, Normal Defense 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O
A22 21,166 English Opening: King's English Variation, Two Knights' Variation 1.c4 e5 2.Nc3 Nf6
D15 20,892 Slav Defense: Chameleon Variation 1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 a6
D37 20,620 Queen's Gambit Declined: Harrwitz Attack 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 Be7 5.Bf4
D53 20,599 Queen's Gambit Declined: 4.Bg5 Be7 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7
E60 20,549 King's Indian Defense: Fianchetto Variation, Immediate Fianchetto 1.d4 Nf6 2.c4 g6 3.g3
E17 20,451 Queen's Indian Defense: Kasparov-Petrosian Variation 1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.Nc3 Bb7 5.a3
D25 20,422 Queen's Gambit Accepted: Normal Variation 1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3
A49 20,380 Indian Game: Przepiorka Variation 1.d4 Nf6 2.Nf3 g6 3.g3
B77 20,316 Sicilian Defense: Dragon Variation, Yugoslav Attack 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.f3 O-O 8.Qd2 Nc6
D55 20,140 Queen's Gambit Declined: Modern Variation, Normal Line 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3
D85 20,054 Gruenfeld Defense: Exchange Variation 1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5
A42 19,906 Modern Defense: Averbakh Variation 1.d4 g6 2.c4 Bg7 3.Nc3 d6 4.e4
A28 19,889 English Opening: King's English Variation, Four Knights Variation 1.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6
B08 19,708 Pirc Defense: Classical Variation, Quiet System 1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Nf3 Bg7 5.Be2
B42 19,578 Sicilian Defense: Kan Variation, Modern Variation 1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Bd3
B13 19,390 Caro-Kann Defense: Exchange Variation 1.e4 c6 2.d4 d5 3.exd5
C23 19,385 Bishop's Opening 1.e4 e5 2.Bc4
E15 19,261 Queen's Indian Defense: Fianchetto Traditional 1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7
A60 19,108 Benoni Defense: Modern Variation 1.d4 Nf6 2.c4 c5 3.d5 e6
B12 19,031 Caro-Kann Defense: Advance Variation 1.e4 c6 2.d4 d5 3.e5
B90 18,991 Sicilian Defense: Najdorf Variation, English Attack 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Be3
B36 18,957 Sicilian Defense: Accelerated Dragon 1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 g6
C80 18,880 Ruy Lopez: Open Variations 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3
A61 18,773 Benoni Defense 1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.Nf3 g6
A09 18,696 Reti Opening 1.Nf3 d5 2.c4
B08 18,663 Pirc Defense: Classical Variation, Two Knights System 1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Nf3 Bg7
B01 18,639 Scandinavian Defense: Mieses-Kotroc Variation 1.e4 d5 2.exd5 Qxd5
B33 18,597 Sicilian Defense: Lasker-Pelikan Variation, Sveshnikov Variation 1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e5 6.Ndb5 d6 7.Bg5 a6 8.Na3 b5
B45 18,594 Sicilian Defense: Four Knights Variation 1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6
D25 18,296 Queen's Gambit Accepted: Deferred 1.d4 d5 2.Nf3 Nf6 3.c4 dxc4
B14 18,232 Caro-Kann Defense: Panov Attack 1.e4 c6 2.d4 d5 3.exd5 cxd5 4.c4 Nf6 5.Nc3 e6
C05 18,204 French Defense: Tarrasch Variation, Closed Variation 1.e4 e6 2.d4 d5 3.Nd2 Nf6 4.e5 Nfd7 5.Bd3 c5 6.c3 Nc6
C02 18,112 French Defense: Advance Variation 1.e4 e6 2.d4 d5 3.e5 c5 4.c3 Nc6
A49 17,930 Indian Game: King's Indian Variation, Fianchetto Variation 1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2
B84 17,803 Sicilian Defense: Scheveningen Variation, Classical Variation 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Be2 a6
A04 17,577 Zukertort Opening: Sicilian Invitation 1.Nf3 c5
C41 17,464 Philidor Defense 1.e4 e5 2.Nf3 d6 3.d4
B77 17,326 Sicilian Defense: Dragon Variation, Yugoslav Attack Main Line 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.f3 O-O 8.Qd2 Nc6 9.Bc4
E63 17,203 King's Indian Defense: Fianchetto Variation, Panno Variation 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Nf3 d6 5.g3 O-O 6.Bg2 Nc6 7.O-O a6
B25 17,068 Sicilian Defense: Closed Variation, Traditional 1.e4 c5 2.Nc3 Nc6
C88 16,994 Ruy Lopez: Closed, 7...O-O 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O
B02 16,851 Alekhine Defense 1.e4 Nf6
D50 16,642 Queen's Gambit Declined: Modern Variation 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5
C17 16,580 French Defense: Winawer Variation, Advance Variation 1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.a3
C27 16,439 Vienna Game 1.e4 e5 2.Nc3
C07 16,401 French Defense: Tarrasch Variation, Open System 1.e4 e6 2.d4 d5 3.Nd2 c5
B90 16,325 Sicilian Defense: Najdorf, Lipnitzky attack 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bc4
A53 16,290 Old Indian Defense 1.d4 Nf6 2.c4 d6
B25 16,259 Sicilian Defense: Closed 1.e4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6
B88 16,231 Sicilian Defense: Sozin Attack, Leonhardt Variation 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Bc4 Nc6
E68 16,136 King's Indian,Fianchetto, Classical Variation , 8.e4 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Nf3 d6 5.g3 O-O 6.Bg2 Nbd7 7.O-O e5 8.e4
D21 16,062 Queen's Gambit Accepted: Normal Variation 1.d4 d5 2.c4 dxc4 3.Nf3
D85 16,002 Gruenfeld Defense: Exchange Variation, Modern Exchange Variation 1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Nf3
C53 15,947 Italian Game: Classical Variation 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3
A21 15,933 English Opening: King's English Variation, Reversed Sicilian 1.c4 e5 2.Nc3
A17 15,841 English Opening: Anglo-Indian Defense, Anti-Anti-Grünfeld 1.c4 Nf6 2.Nc3 g6 3.Nf3 Bg7 4.e4
B07 15,793 Pirc Defense: Classical Variation 1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Nf3
B22 15,781 Sicilian Defense: Alapin Variation, Barmen Defense 1.e4 c5 2.c3 d5 3.exd5 Qxd5
B31 15,687 Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation 1.e4 c5 2.Nf3 Nc6 3.Bb5 g6
D18 15,668 Slav Defense: Czech Variation, Classical System 1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.a4 Bf5 6.e3
A41 15,609 Rat Defense: See also: Modern Defense (for lines with ,,,g6) 1.d4 d6
A30 15,568 English Opening: Symmetrical Variation, Hedgehog Defense 1.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O e6 6.Nc3 Be7
A13 15,449 English Opening: Agincourt Defense 1.c4 e6
C41 15,416 Philidor Defense: Lion Variation 1.e4 e5 2.Nf3 d6 3.d4 Nd7 4.Nc3 Ngf6
B93 15,401 Sicilian Defense: Najdorf Variation, Amsterdam Variation 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.f4
A46 15,362 Indian Game: Spielmann-Indian 1.d4 Nf6 2.Nf3 c5
E12 15,237 Queen's Indian Defense: Kasparov Variation 1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.Nc3
E17 15,150 Queen's Indian Defense: Classical Variation 1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Be7 6.O-O
C71 15,055 Ruy Lopez: Morphy Defense, Modern Steinitz Defense 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6
C50 14,999 Italian Game: Italian Variation 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5
B67 14,850 Sicilian Defense: Richter-Rauzer Variation, Neo-Modern Variation 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 7.Qd2 a6 8.O-O-O Bd7
C80 14,770 Ruy Lopez: Open, 6.d4 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4
B04 14,671 Alekhine Defense: Modern Variation 1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.Nf3
B06 14,565 Modern Defense: Two Knights Variation 1.e4 g6 2.d4 Bg7 3.Nc3 d6 4.Nf3
E94 14,498 King's Indian Defense: Orthodox Variation, Positional Defense 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O Nbd7
B33 14,417 Sicilian Defense: Lasker-Pelikan Variation, Sveshnikov Variation Chelyabinsk Variation 1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e5 6.Ndb5 d6 7.Bg5 a6 8.Na3 b5 9.Nd5
D26 14,408 Queen's Gambit Accepted: Normal Variation, Traditional System 1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6
B40 14,217 Sicilian Defense: Delayed Alapin Variation 1.e4 c5 2.Nf3 e6 3.c3
A13 14,112 English Opening: Agincourt Defense, King's Knight 1.c4 e6 2.Nf3 d5
D38 14,075 Queen's Gambit Declined: Ragozin Defense 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 Bb4
C53 13,955 Italian Game: Classical Variation, Giuoco Pianissimo 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Nf6 5.d3
B19 13,927 Caro-Kann Defense: Classical, 7...Nd7 1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Bf5 5.Ng3 Bg6 6.h4 h6 7.Nf3 Nd7
A43 13,772 Old Benoni Defense 1.d4 c5
B02 13,767 Alekhine Defense: Normal Variation 1.e4 Nf6 2.e5 Nd5
B50 13,730 Sicilian Defense: Delayed Alapin 1.e4 c5 2.Nf3 d6 3.c3
B76 13,727 Sicilian Defense: Dragon Variation, Yugoslav Attack Belezky Line 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.f3 Nc6
D34 13,711 Tarrasch Defense: Classical Variation 1.d4 d5 2.c4 e6 3.Nc3 c5 4.cxd5 exd5 5.Nf3 Nc6 6.g3 Nf6 7.Bg2 Be7 8.O-O O-O
C67 13,656 Ruy Lopez: Berlin Defense, Rio Gambit Accepted 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Nxe4
E53 13,647 Nimzo-Indian Defense: Normal Variation, Bernstein Defense Except Gligoric System 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 d5 6.Bd3 c5
A65 13,593 Benoni Defense: King Pawn lines 1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4
D20 13,519 Queen's Gambit Accepted 1.d4 d5 2.c4 dxc4
C00 13,326 French Defense: King's Indian Attack 1.e4 e6 2.d3
B35 13,323 Sicilian Defense: Accelerated Dragon, Modern Bc4 Variation 1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 g6 5.Nc3 Bg7 6.Be3 Nf6 7.Bc4
A81 13,315 Dutch Defense: Fianchetto Attack 1.d4 f5 2.g3
E17 13,290 Queen's Indian Defense: Classical Variation, Traditional Variation 1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Be7 6.O-O O-O 7.Nc3
D14 13,232 Slav Defense: Exchange Variation, Symmetrical Line 1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.cxd5 cxd5 5.Nc3 Nc6 6.Bf4 Bf5
E76 13,229 King's Indian Defense: Four Pawns Attack 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f4
B58 13,006 Sicilian Defense: Classical Variation 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Be2
C91 13,006 Ruy Lopez: Closed Variations, Yates Variation 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d6 9.d4
C96 12,994 Ruy Lopez: Closed Variations, Closed Defense 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d6 9.h3 Na5 10.Bc2
C48 12,967 Four Knights Game: Spanish Variation 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5
B22 12,844 Sicilian Defense: Alapin Variation, Smith-Morra Declined 1.e4 c5 2.c3 Nf6 3.e5 Nd5 4.d4 cxd4
B46 12,785 Sicilian Defense: Paulsen Variation 1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 a6
B12 12,768 Caro-Kann Defense: Modern Variation 1.e4 c6 2.d4 d5 3.Nd2
E11 12,749 Bogo-Indian Defense: Grünfeld Variation 1.d4 Nf6 2.c4 e6 3.Nf3 Bb4+ 4.Nbd2
C18 12,708 French Defense: Winawer Variation, Advance Variation 1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.a3 Bxc3+ 6.bxc3 Ne7
C96 12,692 Ruy Lopez: Closed Variations, Closed Defense 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d6 9.h3 Na5 10.Bc2 c5
C11 12,628 French Defense: Steinitz Variation 1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.e5 Nfd7 5.f4 c5 6.Nf3
B89 12,595 Sicilian Defense: Sozin Attack, Main Line 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Bc4 Nc6 7.Be3
A46 12,582 Indian Game: Yusupov-Rubinstein System 1.d4 Nf6 2.Nf3 e6 3.e3
E21 12,346 Nimzo-Indian Defense: Three Knights Variation 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Nf3
C47 12,308 Four Knights Game: Scotch Variation 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.d4
C26 12,254 Vienna Game: Falkbeer Variation 1.e4 e5 2.Nc3 Nf6
B38 12,204 Sicilian Defense: Accelerated Dragon, Maroczy Bind 1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 g6 5.c4 Bg7 6.Be3
B50 12,159 Sicilian Defense: Modern Variations, Anti-Qxd4 Move Order 1.e4 c5 2.Nf3 d6 3.d4 Nf6
C42 12,152 Russian Game: Classical Attack 1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.d4
D58 12,142 Queen's Gambit Declined: Tartakower Defense 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 h6 7.Bh4 b6
B09 12,123 Pirc Defense: Austrian Attack 1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.f4
E41 12,088 Nimzo-Indian Defense: Huebner Variation 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 c5
E12 12,022 Queen's Indian Defense: Kasparov-Petrosian Variation, Main Line 1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.Nc3 Bb7 5.a3 d5
E92 12,015 King's Indian Defense: Orthodox Variation, Gligoric-Taimanov System 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.Be3
C88 11,923 Ruy Lopez: Closed, 8.c3 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3
D13 11,889 Slav Defense: Exchange Variation 1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.cxd5 cxd5
A31 11,763 English Opening: Symmetrical Variation, Anti-Benoni Variation 1.c4 c5 2.Nf3 Nf6 3.d4
A58 11,718 Benko Gambit: Accepted, Fully Accepted Variation 1.d4 Nf6 2.c4 c5 3.d5 b5 4.cxb5 a6 5.bxa6
D35 11,703 Queen's Gambit Declined: Exchange Variation 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.cxd5
B83 11,698 Sicilian Defense: Scheveningen Variation, Classical Variation 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Be2
A42 11,638 Sicilian Defense: Hyperaccelerated Fianchetto 1.e4 c5 2.Nf3 g6 3.d4
D12 11,551 Slav Defense: Quiet Variation, Schallopp Defense 1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.e3 Bf5
C01 11,429 French Defense: Exchange Variation 1.e4 e6 2.d4 d5 3.exd5
C42 11,400 Russian Game: Three Knights Game 1.e4 e5 2.Nf3 Nf6 3.Nc3
B77 11,336 Sicilian Defense: Dragon Variation, Yugoslav Attack 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.f3 O-O 8.Qd2 Nc6 9.Bc4 Bd7
A37 11,302 English Opening: Symmetrical Variation, Two Knights Line 1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3
A17 11,266 English Opening: Anglo-Indian Defense, Hedgehog System 1.c4 Nf6 2.Nc3 e6
D35 11,181 Queen's Gambit Declined: Exchange Variation, Positional Variation 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.cxd5 exd5 5.Bg5
B03 11,145 Alekhine Defense 1.e4 Nf6 2.e5 Nd5 3.d4
D47 11,116 Semi-Slav Defense: Meran Variation 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5
A10 11,106 English Opening: Great Snake Variation 1.c4 g6
C11 11,090 French Defense: Steinitz Variation, Boleslavsky Variation 1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.e5 Nfd7 5.f4 c5 6.Nf3 Nc6 7.Be3
C55 11,070 Italian Game: Two Knights Defense, Modern Bishop's Opening 1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d3
B27 11,044 Sicilian Defense: Hyperaccelerated Dragon 1.e4 c5 2.Nf3 g6
E04 11,027 Catalan Opening: Open Defense 1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 dxc4 5.Nf3
A70 10,897 Benoni Defense: Classical Variation 1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.Nf3
B63 10,811 Sicilian Defense: Richter-Rauzer Variation, Traditional Variatoin 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 7.Qd2
D32 10,808 Tarrasch Defense: Symmetrical Variation 1.d4 d5 2.c4 e6 3.Nc3 c5 4.e3 Nf6 5.Nf3 Nc6
D32 10,803 Tarrasch Defense 1.d4 d5 2.c4 e6 3.Nc3 c5
A36 10,802 English Opening: Symmetrical Variation, Symmetrical Variation 1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7
A13 10,734 English Opening: Anglo-Indian Defense, Queen's Indian Formation 1.c4 Nf6 2.Nf3 e6 3.g3 b6 4.Bg2 Bb7
A55 10,728 Old Indian Defense: Normal Variation 1.d4 Nf6 2.c4 d6 3.Nc3 e5 4.Nf3 Nbd7 5.e4
D34 10,707 Tarrasch Defense: Prague Variation, Main Line 1.d4 d5 2.c4 e6 3.Nc3 c5 4.cxd5 exd5 5.Nf3 Nc6 6.g3 Nf6 7.Bg2 Be7
A25 10,692 English Opening: King's English Variation, Taimanov Variation 1.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7
B06 10,597 Modern Defense: Pseudo-Austrian Attack 1.e4 g6 2.d4 Bg7 3.Nc3 d6 4.f4
D33 10,565 Tarrasch Defense: Rubinstein System 1.d4 d5 2.c4 e6 3.Nc3 c5 4.cxd5 exd5 5.Nf3 Nc6 6.g3
B17 10,553 Caro-Kann Defense: Karpov Variation 1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nd7
C50 10,525 Italian Game: Giuoco Pianissimo, Normal 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.d3 Nf6
E21 10,443 Nimzo-Indian Defense: Three Knights Variation, Duchamp Variation 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Nf3 b6
E01 10,378 Catalan Opening: Closed Variation 1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2
C11 10,377 French Defense: Classical Variation, Steinitz Variation 1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.e5
E62 10,357 King's Indian Defense: Fianchetto Variation, Karlsbad Variation 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Nf3 d6 5.g3 O-O 6.Bg2 Nc6
B32 10,351 Sicilian Defense: Kalashnikov Variation 1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 e5 5.Nb5 d6
D31 10,293 Queen's Gambit Declined: Charousek (Petrosian) Variation 1.d4 d5 2.c4 e6 3.Nc3 Be7
B10 10,277 Caro-Kann Defense: Accelerated Panov Attack 1.e4 c6 2.c4
B23 10,241 Sicilian Defense: Grand Prix Attack 1.e4 c5 2.Nc3 Nc6 3.f4
C53 10,141 Italian Game: Classical Variation 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Nf6
C02 10,134 French Defense: Advance Variation, Main Line 1.e4 e6 2.d4 d5 3.e5 c5 4.c3 Nc6 5.Nf3 Qb6 6.a3
A25 10,123 English Opening: King's English Variation, Reversed Closed Sicilian 1.c4 e5 2.Nc3 Nc6
C80 10,112 Ruy Lopez: Open Variations, Open Variation 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4
B63 10,102 Sicilian Defense: Richter-Rauzer Variation, Classical Variation 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 7.Qd2 Be7
E92 10,061 King's Indian Defense: Petrosian Variation 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.d5
A48 9,944 Torre Attack: Fianchetto Defense 1.d4 Nf6 2.Nf3 g6 3.Bg5
A46 9,940 Indian Game: Wade-Tarkatower Defense 1.d4 Nf6 2.Nf3 d6
C17 9,870 French Defense: Winawer Variation, Advance Variation 1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5
C30 9,843 King's Gambit 1.e4 e5 2.f4
B10 9,802 Caro-Kann Defense: Two Knights Attack 1.e4 c6 2.Nc3 d5 3.Nf3
E14 9,801 Queen's Indian Defense: Spassky System 1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.e3
E43 9,762 Nimzo-Indian Defense: St, Petersburg Variation 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6
E73 9,678 King's Indian Defense: Averbakh Variation 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Be2 O-O 6.Bg5
D40 9,602 Queen's Gambit Declined: Semi-Tarrasch Defense 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c5
A46 9,596 Torre Attack: Classical Defense 1.d4 Nf6 2.Nf3 e6 3.Bg5
D32 9,574 Tarrasch Defense: Two Knights Variation 1.d4 d5 2.c4 e6 3.Nc3 c5 4.cxd5 exd5 5.Nf3
D34 9,508 Tarrasch Defense: Classical Variation, Carlsbad Variation 1.d4 d5 2.c4 e6 3.Nc3 c5 4.cxd5 exd5 5.Nf3 Nc6 6.g3 Nf6 7.Bg2 Be7 8.O-O O-O 9.Bg5
B32 9,439 Sicilian Defense: Löwenthal Variation 1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 e5
B25 9,423 Sicilian Defense: Closed Variation 1.e4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.f4
C41 9,420 Philidor Defense 1.e4 e5 2.Nf3 d6
E15 9,383 Queen's Indian Defense: Fianchetto Variation, Nimzowitsch Variation Quiet Line 1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Ba6 5.b3
C13 9,288 French Defense: Classical Variation, Normal Variation 1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Be7
B76 9,258 Sicilian Defense: Dragon Variation, Yugoslav Attack 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.f3 O-O
D60 9,215 Queen's Gambit Declined: Orthodox Defense 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 Nbd7
B18 9,122 Caro-Kann Defense: Classical Variation 1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Bf5
C07 9,104 French Defense: Tarrasch Variation, Open System Euwe-Keres Line 1.e4 e6 2.d4 d5 3.Nd2 c5 4.Ngf3
D26 9,100 Queen's Gambit Accepted: Classical Defense, Normal Lines 1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5 6.O-O
A90 9,030 Dutch Defense: Classical Variation 1.d4 f5 2.c4 Nf6 3.g3 e6 4.Bg2
B48 8,938 Sicilian Defense: Paulsen Variation, Bastrikov Variation 1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 Qc7 6.Be3
D10 8,906 Slav Defense: Exchange Variation 1.d4 d5 2.c4 c6 3.cxd5
E71 8,895 King's Indian Defense: Makagonov Variation 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.h3
D30 8,870 Queen's Gambit Declined: Tarrasch Defense, Pseudo-Tarrasch 1.d4 d5 2.c4 e6 3.Nf3 c5
B37 8,868 Sicilian Defense: Accelerated Fianchetto, Maroczy bind, 5...Bg7 1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 g6 5.c4 Bg7
A29 8,836 English Opening: King's English Variation, Four Knights Variation Fianchetto Lines 1.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.g3
A04 8,805 Zukertort Opening: Kingside Fianchetto 1.Nf3 g6
D44 8,751 Semi-Slav Defense: Accepted 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.Bg5 dxc4
C97 8,734 Ruy Lopez: Closed Variations, Chigorin Defense 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d6 9.h3 Na5 10.Bc2 c5 11.d4 Qc7
E15 8,621 Queen's Indian Defense: Fianchetto Variation, Nimzowitsch Variation 1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Ba6
A41 8,577 Old Indian Defense 1.d4 d6 2.c4
D30 8,548 Queen's Gambit Declined: Traditional Variation 1.d4 d5 2.c4 e6 3.Nf3 Nf6 4.Bg5
B07 8,544 Czech Defense 1.e4 d6 2.d4 Nf6 3.Nc3 c6
B00 8,481 Nimzowitsch Defense 1.e4 Nc6
B87 8,424 Sicilian Defense: Sozin Attack, Flank Variation 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Bc4 a6 7.Bb3 b5
A14 8,372 English Opening: Agincourt Defense, Neo Catalan Declined 1.c4 e6 2.Nf3 d5 3.g3 Nf6 4.Bg2 Be7 5.O-O
A81 8,360 Dutch Defense: Semi-Leningrad Variation 1.d4 f5 2.g3 Nf6 3.Bg2 g6
A43 8,311 Benoni Defense: Benoni-Indian Defense, Kingside move order 1.d4 c5 2.d5 Nf6 3.Nf3
A84 8,273 Dutch Defense: Classical Variation 1.d4 f5 2.c4 e6
A56 8,244 Benoni Defense: Czech Benoni Defense 1.d4 Nf6 2.c4 c5 3.d5 e5
D63 8,193 Queen's Gambit Declined: Orthodox Defense, Main Line 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 Nbd7 7.Rc1
A11 8,169 English Opening: Anglo-Slav Variation 1.c4 c6
D04 8,102 Queen Pawn Game: Colle System 1.d4 d5 2.Nf3 Nf6 3.e3
D91 8,056 Gruenfeld Defense: Three Knights Variation, Petrosian System 1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Bg5
C06 8,037 French Defense: Tarrasch Variation, Closed Variation Main Line 1.e4 e6 2.d4 d5 3.Nd2 Nf6 4.e5 Nfd7 5.Bd3 c5 6.c3 Nc6 7.Ne2 cxd4 8.cxd4
B10 8,034 Caro-Kann Defense: Accelerated Panov Attack 1.e4 c6 2.c4 d5
D96 8,017 Gruenfeld Defense: Russian Variation 1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Qb3
C44 7,982 Scotch Game: Scotch Gambit, Dubois Reti Defense 1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Bc4 Nf6
A00 7,969 Hungarian Opening: Symmetrical Variation 1.g3 g6
D33 7,954 Tarrasch Defense: Prague Variation 1.d4 d5 2.c4 e6 3.Nc3 c5 4.cxd5 exd5 5.Nf3 Nc6 6.g3 Nf6
A41 7,919 Modern Defense 1.d4 g6 2.c4 Bg7 3.Nc3 d6
C49 7,914 Four Knights Game: Double Spanish 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bb4
C43 7,890 Russian Game: Modern Attack 1.e4 e5 2.Nf3 Nf6 3.d4
B08 7,865 Pirc Defense: Classical Variation, Schlechter Variation 1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Nf3 Bg7 5.h3
D77 7,836 Neo-Gruenfeld Defense: Classical Variation 1.d4 Nf6 2.c4 g6 3.g3 d5 4.Bg2 Bg7 5.Nf3 O-O 6.O-O
D94 7,828 Gruenfeld Defense: Three Knights Variation, Burille Variation 1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.e3
B96 7,774 Sicilian Defense: Najdorf Variation 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6 7.f4
A35 7,769 English Opening: Symmetrical Variation, Four Knights Variation 1.c4 c5 2.Nc3 Nc6 3.Nf3 Nf6
C45 7,738 Scotch Game: Classical Variation 1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Bc5
E48 7,689 Nimzo-Indian Defense: Normal Variation, Bishop Attack Classical Defense 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd3 d5
C24 7,616 Bishop's Opening: Berlin Defense 1.e4 e5 2.Bc4 Nf6
E67 7,557 King's Indian Defense: Fianchetto Variation, Debrecen Defense 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Nf3 d6 5.g3 O-O 6.Bg2 Nbd7
A22 7,516 English Opening: King's English Variation, Two Knights' Variation Fianchetto Line 1.c4 e5 2.Nc3 Nf6 3.g3
B98 7,497 Sicilian Defense: Najdorf Variation 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6 7.f4 Be7
A07 7,482 King's Indian Attack: Yugoslav Variation 1.Nf3 d5 2.g3 Nf6 3.Bg2 c6 4.O-O Bg4
E85 7,461 King's Indian Defense: Saemisch Variation, Orthodox Variation 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Be3 e5
E11 7,436 Bogo-Indian Defense: Nimzowitsch Variation 1.d4 Nf6 2.c4 e6 3.Nf3 Bb4+ 4.Bd2 Qe7
B09 7,417 Pirc Defense: Austrian Attack 1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.f4 Bg7 5.Nf3 O-O
E54 7,238 Nimzo-Indian Defense: Panov Attack, Main Line 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 c5 5.Nf3 cxd4 6.exd4 d5
A10 7,165 English Opening: Anglo-Dutch Defense 1.c4 f5
B10 7,129 Caro-Kann Defense 1.e4 c6 2.Nc3
A00 7,089 Van Geet Opening: Caro-Kann Variation 1.Nc3 d5 2.e4 c6
D78 7,056 Neo-Gruenfeld Defense: Classical Variation, Original Defense 1.d4 Nf6 2.c4 g6 3.g3 d5 4.Bg2 Bg7 5.Nf3 O-O 6.O-O c6
D44 6,964 Queen's Gambit Declined: Vienna Variation 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 dxc4
B83 6,931 Sicilian Defense: Scheveningen Variation, Modern Variation 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Be2 Nc6
B13 6,907 Caro-Kann Defense: Panov Attack, Modern Defense 1.e4 c6 2.d4 d5 3.exd5 cxd5 4.c4 Nf6 5.Nc3 Nc6
B72 6,897 Sicilian Defense: Dragon Variation, Classical Variation 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be2
E34 6,875 Nimzo-Indian Defense: Classical Variation, Noa Variation 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 d5
B53 6,869 Sicilian Defense: Chekhover Variation 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Qxd4
B78 6,865 Sicilian Defense: Dragon Variation, Yugoslav Attack 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.f3 O-O 8.Qd2 Nc6 9.Bc4 Bd7 10.O-O-O
B09 6,810 Pirc Defense: Austrian Attack, Weiss Variation 1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.f4 Bg7 5.Nf3 O-O 6.Bd3
D52 6,765 Queen's Gambit Declined 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Nbd7 5.e3 c6 6.Nf3
C45 6,739 Scotch Game: Schmidt Variation 1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Nf6
C68 6,729 Ruy Lopez: Exchange Variation 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6
C11 6,705 French Defense: Classical Variation, Burn Variation 1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 dxe4
C18 6,696 French Defense: Winawer Variation, Poisoned Pawn Variation 1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.a3 Bxc3+ 6.bxc3 Ne7 7.Qg4
D19 6,644 Queen's Gambit Declined: Slav,Dutch Variation 1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.a4 Bf5 6.e3 e6 7.Bxc4 Bb4 8.O-O
E56 6,612 Nimzo-Indian Defense: Normal Variation, Gligoric System Bernstein Defense 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 d5 6.Bd3 c5 7.O-O Nc6
D01 6,546 Richter-Veresov attack 1.d4 d5 2.Nc3 Nf6 3.Bg5
A15 6,473 English Opening: Anglo-Indian Defense, Queen's Indian Formation 1.c4 Nf6 2.Nf3 b6
B81 6,446 Sicilian Defense: Scheveningen Variation, Keres Attack 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.g4
C69 6,420 Ruy Lopez: Exchange Variation, Gligoric Variation 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6 dxc6 5.O-O f6
D37 6,345 Queen's Gambit Declined: Barmen Variation 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 Nbd7
A70 6,334 Benoni Defense: Classical Variation, New York Variation 1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.Nf3 Bg7 8.h3
E76 6,269 King's Indian Defense: Steiner Attack 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Bg5
B80 6,267 Sicilian Defense: Scheveningen Variation, English Attack 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Be3 a6 7.f3
B14 6,266 Caro-Kann Defense: Panov Attack, Fianchetto Defense 1.e4 c6 2.d4 d5 3.exd5 cxd5 4.c4 Nf6 5.Nc3 g6
E32 6,258 Nimzo-Indian Defense: Classical Variation, Keres Defense 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 O-O 5.a3 Bxc3+ 6.Qxc3 b6
B52 6,256 Sicilian Defense: Canal Attack, Main Line 1.e4 c5 2.Nf3 d6 3.Bb5+ Bd7
A84 6,232 Dutch Defense 1.d4 f5 2.c4
C10 6,222 French Defense: Rubinstein Variation, Blackburne Defense 1.e4 e6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nd7
A48 6,215 Indian Game: London System 1.d4 Nf6 2.Nf3 g6 3.Bf4
B01 6,215 Scandinavian Defense: Modern Variation 1.e4 d5 2.exd5 Nf6 3.d4
A33 6,213 English Opening: Symmetrical Variation, Anti-Benoni Variation Spielmann Defense 1.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.Nc3 Nc6
C10 6,198 French Defense: Rubinstein Variation 1.e4 e6 2.d4 d5 3.Nc3 dxe4
A90 6,158 Dutch Defense: Stonewall Variation, Modern Variation 1.d4 f5 2.c4 e6 3.Nf3 Nf6 4.g3 c6 5.Bg2 d5 6.O-O Bd6
C63 6,153 Ruy Lopez: Schliemann Defense 1.e4 e5 2.Nf3 Nc6 3.Bb5 f5
B12 6,112 Caro-Kann Defense: Advance Variation, Short Variation 1.e4 c6 2.d4 d5 3.e5 Bf5 4.Nf3
B40 6,112 Sicilian Defense: French Variation, Westerinen Attack 1.e4 c5 2.Nf3 e6 3.b3
E87 6,108 King's Indian Defense: Saemisch Variation, Closed Variation 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Be3 e5 7.d5
A87 6,077 Dutch Defense: Leningrad Variation 1.d4 f5 2.c4 Nf6 3.g3 g6 4.Bg2 Bg7 5.Nf3
D17 6,075 Slav Defense: Czech Variation, Krause Attack 1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.a4 Bf5 6.Ne5
C65 6,042 Ruy Lopez: Berlin Defense 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O
D63 6,030 Queen's Gambit Declined: Orthodox Defense, Main Line 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 Nbd7 7.Rc1 c6
A13 5,997 English Opening: Agincourt Defense, Catalan Defense Accepted 1.c4 e6 2.Nf3 d5 3.g3 Nf6 4.Bg2 dxc4
B83 5,996 Sicilian Defense: Scheveningen Variation, Modern Variation 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Be2 Nc6 7.O-O Be7 8.Be3 O-O 9.f4
B28 5,995 Sicilian Defense: O'Kelly Variation 1.e4 c5 2.Nf3 a6
C90 5,985 Ruy Lopez: Closed Variations, Pilnik Variation 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d6 9.d3
C25 5,960 Vienna Game: Max Lange Defense 1.e4 e5 2.Nc3 Nc6
B01 5,930 Scandinavian Defense: Modern Variation 1.e4 d5 2.exd5 Nf6
B01 5,815 Scandinavian Defense: Main Lines, Mieses Variation 1.e4 d5 2.exd5 Qxd5 3.Nc3 Qa5 4.d4 Nf6
B06 5,801 Modern Defense: Geller's System 1.e4 g6 2.d4 Bg7 3.Nf3 d6 4.c3
E94 5,793 King's Indian Defense: Orthodox Variation, Glek Defense 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O Na6
D41 5,764 Queen's Gambit Declined: Semi-Tarrasch, 5.cd 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c5 5.cxd5
E47 5,739 Nimzo-Indian Defense: Normal Variation, Bishop Attack 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd3
B41 5,735 Sicilian Defense: Kan Variation, Maroczy Bind Reti Variation 1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.c4
A57 5,725 Benko Gambit: Declined, Main Line 1.d4 Nf6 2.c4 c5 3.d5 b5 4.Nf3
E69 5,655 King's Indian Defense: Fianchetto Variation, Classical Main Line 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Nf3 d6 5.g3 O-O 6.Bg2 Nbd7 7.O-O e5 8.e4 c6 9.h3
D48 5,583 Semi-Slav Defense: Meran Variation 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Bd3 a6
A45 5,577 Trompowsky Attack: Classical Defense 1.d4 Nf6 2.Bg5 e6
C99 5,570 Ruy Lopez: Morphy Defense, Chigorin Defense Panov System 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d6 9.h3 Na5 10.Bc2 c5 11.d4 Qc7 12.Nbd2 cxd4 13.cxd4
E83 5,534 King's Indian Defense: Saemisch Variation, Yates Defense 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Be3 Nc6
D44 5,493 Semi-Slav Defense: Botvinnik Variation 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.Bg5 dxc4 6.e4
A41 5,445 Rat Defense: English Rat 1.d4 d6 2.c4 e5
D02 5,439 Queen Pawn Game: Symmetrical Variation, Pseudo-Catalan 1.d4 d5 2.Nf3 Nf6 3.g3
B76 5,435 Sicilian Defense: Dragon Variation, Yugoslav Attack Modern Line 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.f3 O-O 8.Qd2 Nc6 9.O-O-O
C47 5,421 Four Knights Game: Scotch Variation, Accepted 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.d4 exd4
C92 5,421 Ruy Lopez: Closed Variations, Flohr System 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d6 9.h3 Bb7
B57 5,411 Sicilian Defense: Classical Variation, Anti-Sozin Variation 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bc4 Qb6
B92 5,378 Sicilian Defense: Najdorf Variation, Opocensky Variation Traditional Line 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Be2 e5 7.Nb3 Be7 8.O-O O-O
B04 5,372 Alekhine Defense: Modern Variation, Alburt Variation 1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.Nf3 g6
B99 5,358 Sicilian Defense: Najdorf Variation, Main Line 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6 7.f4 Be7 8.Qf3 Qc7 9.O-O-O Nbd7
A51 5,357 Indian Game: Budapest Defense 1.d4 Nf6 2.c4 e5
D52 5,349 Queen's Gambit Declined: Cambridge Springs Variation 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Nbd7 5.Nf3 c6 6.e3 Qa5
B18 5,342 Caro-Kann Defense: Classical Variation, Main lines 1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Bf5 5.Ng3 Bg6 6.h4
B01 5,323 Scandinavian Defense: Main Lines 1.e4 d5 2.exd5 Qxd5 3.Nc3 Qa5
B98 5,316 Sicilian Defense: Najdorf Variation, Traditional Line 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6 7.f4 Be7 8.Qf3 Qc7
E57 5,314 Nimzo-Indian Defense: Normal Variation, Bernstein Defense Exchange Line 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 d5 6.Bd3 c5 7.O-O Nc6 8.a3 Bxc3 9.bxc3
B32 5,308 Sicilian Defense: Flohr Variation 1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Qc7
E75 5,271 King's Indian Defense: Averbakh Variation, Benoni Defense Advance Variation 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Be2 O-O 6.Bg5 c5 7.d5
C04 5,265 French Defense: Tarrasch Variation, Guimard Defense Main Line 1.e4 e6 2.d4 d5 3.Nd2 Nc6 4.Ngf3 Nf6
C57 5,249 Italian Game: Two Knights Defense, Knight Attack 1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5
A57 5,238 Benoni Defense: Hromodka System 1.d4 Nf6 2.c4 c5 3.d5 d6
C08 5,212 French Defense: Tarrasch, Open, 4.ed ed 1.e4 e6 2.d4 d5 3.Nd2 c5 4.exd5 exd5
D24 5,208 Queen's Gambit Accepted: Showalter Variation 1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.Nc3
B21 5,208 Sicilian Defense: Smith-Morra gambit 1.e4 c5 2.d4
B03 5,195 Alekhine Defense: Exchange Variation 1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.c4 Nb6 5.exd6
B60 5,181 Sicilian Defense: Richter-Rauzer Variation, Modern Variation 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 Bd7
E20 5,162 Nimzo-Indian Defense: Kmoch Variation 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.f3
A02 5,158 Bird Opening 1.f4
D12 5,154 Slav Defense: Quiet Variation, Pin Defense 1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.e3 Bg4
A04 5,150 Zukertort Opening: Queen's Gambit Invitation 1.Nf3 e6
C63 5,148 Ruy Lopez: Schliemann Defense, Dyckhoff Variation 1.e4 e5 2.Nf3 Nc6 3.Bb5 f5 4.Nc3
C02 5,129 French Defense: Advance Variation, Euwe Variation 1.e4 e6 2.d4 d5 3.e5 c5 4.c3 Nc6 5.Nf3 Bd7
B00 5,108 Nimzowitsch Defense: Declined Variation 1.e4 Nc6 2.Nf3
E54 5,060 Nimzo-Indian Defense: Normal Variation, Gligoric System Exchange at c4 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 d5 6.Bd3 c5 7.O-O dxc4 8.Bxc4
D31 5,042 Semi-Slav Defense: Noteboom Variation 1.d4 d5 2.c4 e6 3.Nc3 c6 4.Nf3 dxc4
A17 5,031 English Opening: Anglo-Indian Defense, Nimzo-English Opening 1.c4 Nf6 2.Nc3 e6 3.Nf3 Bb4
C69 4,989 Ruy Lopez: Exchange Variation, Normal Variation 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6 dxc6 5.O-O
D07 4,974 Queen's Gambit Declined: Chigorin Defense 1.d4 d5 2.c4 Nc6
E77 4,973 King's Indian Defense: Four Pawns Attack, Normal Attack 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f4 O-O 6.Be2 c5 7.d5 e6 8.Nf3
B73 4,963 Sicilian Defense: Dragon Variation, Classical Variation 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be2 Bg7 7.Be3 Nc6
B07 4,955 Pirc Defense: Byrne Variation 1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Bg5
A54 4,953 Old Indian Defense: Ukrainian Variation 1.d4 Nf6 2.c4 d6 3.Nc3 e5
D45 4,953 Semi-Slav Defense: Accelerated Meran Variation 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 a6
E17 4,952 Queen's Indian Defense: Anti-Queen's Indian System 1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Be7 6.Nc3
A01 4,949 Nimzo-Larsen Attack 1.b3
A88 4,947 Dutch Defense: Leningrad Variation, Warsaw Variation 1.d4 f5 2.c4 Nf6 3.g3 g6 4.Bg2 Bg7 5.Nf3 O-O 6.O-O d6 7.Nc3 c6
D02 4,944 Queen Pawn Game: London System 1.d4 d5 2.Nf3 Nf6 3.Bf4
E91 4,941 King's Indian Defense: Kazakh Variation 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 Na6
C91 4,928 Ruy Lopez: Closed Variations, Bogoljubow Variation 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d6 9.d4 Bg4
B23 4,895 Sicilian Defense: Closed Variation, Chameleon Variation 1.e4 c5 2.Nc3 Nc6 3.Nge2
C12 4,876 French Defense: MacCutcheon Variation 1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Bb4
D32 4,849 Queen's Gambit Declined: Tarrasch Defense: 4.cd ed 1.d4 d5 2.c4 e6 3.Nc3 c5 4.cxd5 exd5
B07 4,843 Pirc Defense: Sveshnikov system 1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.g3
D20 4,835 Queen's Gambit Accepted: Old Variation 1.d4 d5 2.c4 dxc4 3.e3
A89 4,808 Dutch Defense: Leningrad Variation, Matulovic Variation 1.d4 f5 2.c4 Nf6 3.g3 g6 4.Bg2 Bg7 5.Nf3 O-O 6.O-O d6 7.Nc3 Nc6
D46 4,775 Semi-Slav Defense: Chigorin Defense 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 Bd6
A50 4,765 Slav Indian 1.d4 Nf6 2.c4 c6
B43 4,746 Sicilian Defense: Kan Variation, Wing Attack 1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Nc3 b5
D61 4,732 Queen's Gambit Declined: Orthodox Defense, Rubinstein Variation 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 Nbd7 7.Qc2
B29 4,729 Sicilian Defense: Nimzowitsch Variation 1.e4 c5 2.Nf3 Nf6
A03 4,695 Bird Opening: Dutch Variation 1.f4 d5
A62 4,640 Benoni Defense: Fianchetto Variation 1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.Nf3 g6 7.g3 Bg7 8.Bg2 O-O
D97 4,636 Gruenfeld Defense: Russian Variation, With e4 1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Qb3 dxc4 6.Qxc4 O-O 7.e4
C41 4,634 Philidor Defense: Exchange Variation 1.e4 e5 2.Nf3 d6 3.d4 exd4
D30 4,632 Semi-Slav Defense: Quiet Variation 1.d4 d5 2.c4 e6 3.Nf3 Nf6 4.e3 c6 5.Nbd2
A04 4,617 Zukertort Opening: Nimzo-Larsen Variation 1.Nf3 Nf6 2.b3
B26 4,612 Sicilian Defense: Closed Variation 1.e4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.Be3
A34 4,612 English Opening: Symmetrical Variation, Normal Variation 1.c4 c5 2.Nc3
C28 4,587 Vienna Game: Stanley Variation, Three Knights Variation 1.e4 e5 2.Nc3 Nf6 3.Bc4 Nc6
A37 4,575 English Opening: Symmetrical Variation, Botvinnik System Reversed 1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 e5
A04 4,558 Zukertort Opening: Dutch Variation 1.Nf3 f5
B06 4,553 Modern Defense: Two Knights Variation, Suttles Variation 1.e4 g6 2.d4 Bg7 3.Nc3 d6 4.Nf3 c6
A26 4,544 English Opening: King's English Variation, Closed System Full Symmetry 1.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6
E19 4,533 Queen's Indian Defense: Classical Variation, Traditional Variation Main Line 1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Be7 6.O-O O-O 7.Nc3 Ne4 8.Qc2 Nxc3 9.Qxc3
A35 4,479 English Opening: Symmetrical Variation, Two Knights Variation 1.c4 c5 2.Nc3 Nc6
A38 4,477 English Opening: Symmetrical Variation, Full Symmetry Line 1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6
D92 4,463 Gruenfeld Defense: Three Knights Variation, Hungarian Attack 1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Bf4
D66 4,461 Queen's Gambit Declined: Orthodox Defense: Bd3 line 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 Nbd7 7.Rc1 c6 8.Bd3
C77 4,460 Ruy Lopez: Morphy Defense, Anderssen Variation 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.d3
B21 4,443 Sicilian Defense: McDonnell Attack 1.e4 c5 2.f4
A47 4,439 Indian Game: Pseudo-Queen's Indian 1.d4 Nf6 2.Nf3 b6
D87 4,431 Gruenfeld Defense: Exchange Variation, Spassky Variation 1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Bc4 O-O 8.Ne2 c5
E76 4,430 King's Indian Defense: Four Pawns Attack, Dynamic Attack 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f4 O-O 6.Nf3 c5 7.d5
B09 4,427 Pirc Defense: Austrian Attack, Dragon Formation 1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.f4 Bg7 5.Nf3 c5
A28 4,409 English Opening: King's English Variation, Four Knights Variation Quiet Line 1.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.e3
A40 4,406 English Defense 1.d4 e6 2.c4 b6
D02 4,404 Queen Pawn Game: Chigorin Variation 1.d4 d5 2.Nf3 Nc6
A34 4,373 English Opening: Symmetrical Variation, Fianchetto Variation 1.c4 c5 2.Nc3 Nf6 3.g3
D82 4,371 Gruenfeld Defense: Brinckmann Attack 1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Bf4
C80 4,358 Ruy Lopez: Open Variations, Main Lines 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 Be6
B65 4,340 Sicilian Defense: Richter-Rauzer Variation, Classical Variation 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 7.Qd2 Be7 8.O-O-O O-O 9.f4 Nxd4 10.Qxd4
A45 4,332 Indian Game: Tartakower Attack 1.d4 Nf6 2.g3
C49 4,332 Four Knights Game: Double Spanish Misc, with 5,O-O 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bb4 5.O-O O-O 6.d3
A16 4,330 English Opening: Golombek Defense 1.c4 Nf6 2.Nc3 d5
E92 4,322 King's Indian Defense: Petrosian Variation, Stein Defense 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.d5 a5
A54 4,317 Old Indian Defense: Two Knights Variation 1.d4 Nf6 2.c4 d6 3.Nc3 e5 4.Nf3
D53 4,314 Queen's Gambit Declined: 4.Bg5 Be7, 5.e3 O-O 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O
C34 4,306 King's Gambit: Accepted, King's Knight Gambit 1.e4 e5 2.f4 exf4 3.Nf3
C03 4,303 French Defense: Tarrasch Variation, Guimard Defense 1.e4 e6 2.d4 d5 3.Nd2 Nc6
B08 4,246 Pirc Defense: Classical Variation, Quiet System Czech Defense 1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Nf3 Bg7 5.Be2 O-O 6.O-O c6
B15 4,236 Caro-Kann Defense: Gurgenidze System 1.e4 c6 2.d4 d5 3.Nc3 g6
D05 4,234 Colle System 1.d4 d5 2.Nf3 Nf6 3.e3 e6
C78 4,208 Ruy Lopez: Morphy Defense, Archangelsk Variation 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O b5 6.Bb3 Bb7
C43 4,202 Russian Game: Modern attack, Symmetrical Variation 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4
B19 4,196 Caro-Kann Defense: Classical, Spassky Variation 1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Bf5 5.Ng3 Bg6 6.h4 h6 7.Nf3 Nd7 8.h5
E62 4,182 King's Indian Defense: Fianchetto Variation, Delayed Fianchetto 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Nf3 d6 5.g3
A44 4,179 Benoni Defense: Old Benoni, Russian Variation 1.d4 c5 2.d5 e5 3.e4 d6
A04 4,166 Zukertort Opening: Pirc Invitation 1.Nf3 d6
E62 4,164 King's Indian Defense: Fianchetto Variation, Uhlmann-Szabo System 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Nf3 d6 5.g3 O-O 6.Bg2 Nc6 7.O-O e5
A39 4,158 English Opening: Symmetrical Variation, Mecking Variation 1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.d4
B21 4,146 Sicilian Defense: Smith-Morra Gambit 1.e4 c5 2.d4 cxd4 3.c3
B40 4,144 Sicilian Defense: Kramnik Variation 1.e4 c5 2.Nf3 e6 3.c4
B97 4,132 Sicilian Defense: Najdorf Variation, Poisoned Pawn Variation 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6 7.f4 Qb6
E84 4,101 King's Indian,Saemisch, Panno Main line 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Be3 Nc6 7.Nge2 a6 8.Qd2 Rb8
D15 4,059 Slav Defense: Schlechter Variation 1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 g6
E65 4,050 King's Indian Defense: Fianchetto Variation, Yugoslav Variation 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Nf3 d6 5.g3 O-O 6.Bg2 c5 7.O-O
B32 4,040 Sicilian Defense: Godiva Variation 1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Qb6
A00 4,032 Van Geet Opening 1.Nc3
A44 3,993 Benoni Defense: Old Benoni, Pawn Thrust 1.d4 c5 2.d5 e5
A34 3,978 English Opening: Symmetrical Variation, Three Knights Variation 1.c4 c5 2.Nc3 Nf6 3.Nf3 d5 4.cxd5 Nxd5
A27 3,962 English Opening: King's English Variation, Three Knights System 1.c4 e5 2.Nc3 Nc6 3.Nf3
C00 3,936 French Defense: Two Knights Variation 1.e4 e6 2.Nc3 d5 3.Nf3
A18 3,929 English Opening: Anglo-Indian Defense, Flohr-Mikenas-Carls Variation 1.c4 Nf6 2.Nc3 e6 3.e4
D03 3,926 Queen Pawn Game: Torre Attack 1.d4 d5 2.Nf3 Nf6 3.Bg5
A58 3,923 Benko Gambit: Accepted, Fianchetto Variation 1.d4 Nf6 2.c4 c5 3.d5 b5 4.cxb5 a6 5.bxa6 Bxa6 6.Nc3 g6 7.Nf3 d6 8.g3 Bg7 9.Bg2
B91 3,900 Sicilian Defense: Najdorf Variation, Zagreb (Fianchetto) Variation 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.g3
C64 3,894 Ruy Lopez: Classical Variation 1.e4 e5 2.Nf3 Nc6 3.Bb5 Bc5
D74 3,866 Neo-Gruenfeld Defense: Delayed Exchange Variation 1.d4 Nf6 2.c4 g6 3.g3 d5 4.Bg2 Bg7 5.Nf3 O-O 6.cxd5 Nxd5 7.O-O
E62 3,858 King's Indian Defense: Fianchetto Variation, Kavalek Defense 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Nf3 d6 5.g3 O-O 6.Bg2 c6 7.O-O Qa5
A80 3,848 Dutch Defense: Raphael Variation 1.d4 f5 2.Nc3
B12 3,842 Caro-Kann Defense: Advance Variation, Botvinnik-Carls Defense 1.e4 c6 2.d4 d5 3.e5 c5
B02 3,838 Alekhine Defense: Scandinavian Variation 1.e4 Nf6 2.Nc3 d5
D35 3,828 Queen's Gambit Declined: Exchange Variation, Positional Variation 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.cxd5 exd5 5.Bg5 c6
C60 3,825 Ruy Lopez: Fianchetto Defense 1.e4 e5 2.Nf3 Nc6 3.Bb5 g6
E98 3,815 King's Indian Defense: Orthodox Variation, Classical System Misc, Lines 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O Nc6 8.d5 Ne7 9.Ne1
D02 3,791 Queen Pawn Game: Krause Variation 1.d4 d5 2.Nf3 c5
C77 3,787 Ruy Lopez: Morphy Defense, Wormald Attack 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.Qe2
E83 3,753 King's Indian Defense: Saemisch Variation, Panno Formation 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Be3 Nc6 7.Nge2 a6
C74 3,747 Ruy Lopez: Morphy Defense, Modern Steinitz Defense 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.c3
A22 3,740 English Opening: King's English Variation, Two Knights' Variation Reversed Dragon 1.c4 e5 2.Nc3 Nf6 3.g3 d5
D25 3,730 Queen's Gambit Accepted: Janowski-Larsen Variation 1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 Bg4
D44 3,708 Semi-Slav Defense: Anti-Moscow Gambit 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.Bg5 h6 6.Bh4
D51 3,707 Queen's Gambit Declined: Modern, Knight Defense 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Nbd7 5.e3 c6
D73 3,680 Neo-Gruenfeld Defense: Misc, with 5,Nf3 1.d4 Nf6 2.c4 g6 3.g3 d5 4.Bg2 Bg7 5.Nf3
C41 3,672 Philidor Defense: Exchange Variation 1.e4 e5 2.Nf3 d6 3.d4 exd4 4.Nxd4
B19 3,664 Caro-Kann Defense: Classical Variation, Lobron System 1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Bf5 5.Ng3 Bg6 6.h4 h6 7.Nf3 Nd7 8.h5 Bh7 9.Bd3 Bxd3 10.Qxd3 e6 11.Bd2 Ngf6 12.O-O-O Be7
E38 3,662 Nimzo-Indian Defense: Classical Variation, Berlin Variation 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 c5
B10 3,651 Caro-Kann Defense: Breyer Variation 1.e4 c6 2.d3
C00 3,648 French Defense: Knight Variation 1.e4 e6 2.Nf3
A43 3,648 Benoni Defense: Benoni-Indian Defense 1.d4 c5 2.d5 Nf6
C44 3,643 Scotch Game: Scotch Gambit 1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Bc4
C44 3,640 Ponziani Opening 1.e4 e5 2.Nf3 Nc6 3.c3
C19 3,634 French Defense: Winawer Variation, Positional Variation 1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.a3 Bxc3+ 6.bxc3 Ne7 7.Nf3
B07 3,627 Lion Defense: Lion's Jaw 1.e4 d6 2.d4 Nf6 3.f3
B20 3,592 Sicilian Defense: Snyder Variation 1.e4 c5 2.b3
D28 3,540 Queen's Gambit Accepted: Classical Defense, Alekhine System 1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5 6.O-O a6 7.Qe2
E30 3,493 Nimzo-Indian Defense: Leningrad Variation 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Bg5
C26 3,490 Vienna Game: Mieses Variation 1.e4 e5 2.Nc3 Nf6 3.g3
D86 3,485 Gruenfeld Defense: Exchange Variation, Classical Variation 1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Bc4
A12 3,481 Reti Opening: Anglo-Slav Variation, Bogoljubow Variation III 1.Nf3 d5 2.c4 c6 3.b3
C86 3,471 Ruy Lopez: Closed Variations, Worrall Attack 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Qe2
C42 3,460 Russian Game: Cozio (Lasker) Attack 1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.Qe2
B16 3,458 Caro-Kann Defense: Bronstein-Larsen Variation 1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nf6 5.Nxf6+ gxf6
D47 3,456 Semi-Slav Defense: Meran Variation, Wade Variation 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Bd3 Bb7
B49 3,449 Sicilian Defense: Paulsen Variation, Bastrikov Variation 1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 Qc7 6.Be3 a6 7.Be2
E81 3,440 King's Indian Defense: Saemisch Variation, Bobotsov-Korchnoi-Petrosian Variation 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Nge2
B12 3,430 Caro-Kann Defense: Maroczy Variation 1.e4 c6 2.d4 d5 3.f3
B12 3,412 Caro-Kann Defense: Advance Variation, Van der Wiel Attack 1.e4 c6 2.d4 d5 3.e5 Bf5 4.Nc3
E64 3,410 King's Indian Defense: Fianchetto Variation, Yugoslav System w/o Nc3 1.d4 Nf6 2.c4 g6 3.Nf3 Bg7 4.g3 d6 5.Bg2 O-O 6.O-O c5
C15 3,390 French Defense: Winawer Variation, Alekhine-Maroczy Gambit 1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.Nge2
C01 3,385 French Defense: Winawer Variation, Delayed Exchange Variation 1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.exd5
E70 3,370 King's Indian Defense: Kramer Variation 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nge2
B22 3,360 Sicilian Defense: Alapin Variation, Barmen Defense Modern Line 1.e4 c5 2.c3 d5 3.exd5 Qxd5 4.d4 Nf6 5.Nf3 Bg4
E97 3,343 King's Indian Defense: Orthodox Variation, Bayonet Attack 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O Nc6 8.d5 Ne7 9.b4
A06 3,323 Nimzowitsch-Larsen Attack 1.Nf3 d5 2.b3
C41 3,291 Philidor Defense: Nimzowitsch Variation 1.e4 e5 2.Nf3 d6 3.d4 Nf6
E59 3,288 Nimzo-Indian Defense: Normal Variation, Bernstein Defense 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 d5 6.Bd3 c5 7.O-O Nc6 8.a3 Bxc3 9.bxc3 dxc4 10.Bxc4
B54 3,276 Sicilian Defense: Prins Variation 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.f3
A66 3,274 Benoni Defense: Pawn Storm Variation 1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.f4
D37 3,264 Queen's Gambit Declined: Harrwitz Attack, Main Line 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 Be7 5.Bf4 O-O 6.e3 c5 7.dxc5 Bxc5
B33 3,232 Sicilian Defense: Lasker-Pelikan Variation, Sveshnikov Variation 1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e5 6.Ndb5 d6 7.Bg5 a6 8.Na3 b5 9.Bxf6 gxf6 10.Nd5 f5
B84 3,232 Sicilian Defense: Scheveningen Variation, Classical Variation 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Be2 a6 7.O-O Qc7
C28 3,221 Bishop's Opening: Vienna Hybrid 1.e4 e5 2.Bc4 Nf6 3.d3 Nc6 4.Nc3
C09 3,190 French Defense: Tarrasch Variation, Open System Main Line 1.e4 e6 2.d4 d5 3.Nd2 c5 4.exd5 exd5 5.Ngf3 Nc6
B48 3,184 Sicilian Defense: Paulsen Variation, Bastrikov Variation English Attack 1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 Qc7 6.Be3 a6 7.Qd2
C29 3,174 Vienna Game: Vienna Gambit, Main Line 1.e4 e5 2.Nc3 Nf6 3.f4 d5
B74 3,155 Sicilian Defense: Dragon Variation, Classical Variation Normal Line 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be2 Bg7 7.Be3 Nc6 8.O-O O-O 9.Nb3
B05 3,149 Alekhine Defense: Modern Variation, Main Line 1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.Nf3 Bg4
D31 3,147 Semi-Slav Defense: Marshall Gambit 1.d4 d5 2.c4 e6 3.Nc3 c6 4.e4
D41 3,135 Queen's Gambit Declined: Semi-Tarrasch Defense, Pillsbury Variation 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c5 5.cxd5 Nxd5 6.e3
A41 3,133 Wade Defense 1.d4 d6 2.Nf3 Bg4
B59 3,129 Sicilian Defense: Boleslavsky Variation 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Be2 e5 7.Nb3
C77 3,121 Ruy Lopez: Morphy Defense, Mackenzie Variation 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.d4
D70 3,120 Indian Game: Anti-Grünfeld, Alekhine Variation 1.d4 Nf6 2.c4 g6 3.f3
B13 3,111 Caro-Kann Defense: Exchange Variation, Rubinstein Variation 1.e4 c6 2.d4 d5 3.exd5 cxd5 4.Bd3 Nc6 5.c3 Nf6 6.Bf4
A45 3,104 Trompowsky Attack: Classical Defense, Big Center Variation 1.d4 Nf6 2.Bg5 e6 3.e4
B39 3,102 Sicilian Defense: Accelerated Dragon, Maroczy Bind Breyer Variation 1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 g6 5.c4 Bg7 6.Be3 Nf6 7.Nc3 Ng4
B36 3,099 Sicilian Defense: Accelerated Dragon, Maroczy Bind Gurgenidze Variation 1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 g6 5.c4 Nf6 6.Nc3 Nxd4 7.Qxd4 d6
E11 3,096 Bogo-Indian Defense: Wade-Smyslov Variation 1.d4 Nf6 2.c4 e6 3.Nf3 Bb4+ 4.Bd2 a5
C72 3,079 Ruy Lopez: Morphy Defense, Modern Steinitz Defense 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.O-O
A36 3,079 English Opening: Symmetrical Variation, Fianchetto Variation 1.c4 c5 2.Nc3 Nc6 3.g3
B86 3,069 Sicilian Defense: Sozin Attack 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Bc4
B29 3,065 Sicilian Defense: Nimzowitsch Variation, Closed Variation 1.e4 c5 2.Nf3 Nf6 3.Nc3
B03 3,063 Alekhine Defense 1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.c4
D51 3,036 Queen's Gambit Declined: Modern, Knight Defense 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Nbd7 5.e3
A46 3,035 Indian Game: London System 1.d4 Nf6 2.Nf3 e6 3.Bf4
C42 3,034 Russian Game: Classical Attack, Mason-Showalter Variation 1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.d4 d5 6.Bd3 Nc6
A07 3,028 King's Indian Attack: Sicilian Variation 1.Nf3 d5 2.g3 c5
B72 3,013 Sicilian Defense: Dragon, Classical attack 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.Be2
C89 3,012 Ruy Lopez: Marshall Attack 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d5
D44 3,009 Queen's Gambit Declined: Vienna Variation, Quiet Variation 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 dxc4 5.e3
D27 3,004 Queen's Gambit Accepted: Classical Defense, Rubinstein Variation 1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5 6.O-O a6 7.a4
A25 2,987 English Opening: King's English Variation, Closed System 1.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3
D55 2,982 Queen's Gambit Declined: Neo-Orthodox Variation 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 h6
C67 2,979 Ruy Lopez: Berlin Defense, l'Hermet Variation 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Nxe4 5.d4 Nd6
E20 2,973 Nimzo-Indian Defense: Romanishin Variation 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.g3
A77 2,973 Benoni Defense: Classical Variation, Czerniak Defense Tal Line 1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.Nf3 Bg7 8.Be2 O-O 9.O-O Re8 10.Nd2
B68 2,960 Sicilian Defense: Richter-Rauzer Variation, Neo-Modern Variation 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 7.Qd2 a6 8.O-O-O Bd7 9.f4 Be7
A42 2,942 Modern Defense: Averbakh System, Kotov Variation 1.d4 g6 2.c4 Bg7 3.Nc3 d6 4.e4 Nc6
D15 2,940 Slav Defense: Chameleon Variation, Advance System 1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 a6 5.c5
B58 2,927 Sicilian Defense: Classical Variation, Fianchetto Variation 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.g3
A08 2,904 King's Indian Attack: Sicilian Variation 1.Nf3 d5 2.g3 c5 3.Bg2
D80 2,901 Gruenfeld Defense: Stockholm Variation 1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Bg5
B42 2,892 Sicilian Defense: Kan Variation, Polugaevsky Variation 1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Bd3 Bc5
E15 2,884 Queen's Indian Defense: Fianchetto Variation, Check Variation 1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Ba6 5.b3 Bb4+
B00 2,882 King Pawn Game: Nimzovich Defense 1.e4 Nc6 2.d4
C48 2,874 Four Knights Game: Spanish Variation, Rubinstein Variation 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Nd4
A46 2,872 Indian Game: Pseudo-Benko 1.d4 Nf6 2.Nf3 c5 3.d5 b5
A86 2,855 Dutch Defense: Fianchetto Variation 1.d4 f5 2.c4 Nf6 3.g3
B80 2,853 Sicilian Defense: Scheveningen Variation, Fianchetto Variation 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.g3
A15 2,838 English Opening: Anglo-Indian Defense, Old Indian Formation 1.c4 Nf6 2.Nf3 d6
D22 2,824 Queen's Gambit Accepted: Alekhine Defense 1.d4 d5 2.c4 dxc4 3.Nf3 a6
B85 2,816 Sicilian Defense: Scheveningen, Classical Main line 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Be2 a6 7.O-O Qc7 8.f4 Nc6 9.Be3 Be7 10.Qe1 O-O
C41 2,812 Philidor Defense: Exchange Variation 1.e4 e5 2.Nf3 d6 3.d4 exd4 4.Nxd4 Nf6
D78 2,784 Neo-Gruenfeld Defense: Classical Variation, Modern Defense 1.d4 Nf6 2.c4 g6 3.g3 d5 4.Bg2 Bg7 5.Nf3 O-O 6.O-O dxc4
A96 2,780 Dutch Defense: Classical Variation 1.d4 f5 2.c4 Nf6 3.g3 e6 4.Bg2 Be7 5.Nf3 O-O 6.O-O d6
E09 2,775 Catalan Opening: Closed, Main line 1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 Be7 5.Nf3 O-O 6.O-O Nbd7 7.Qc2 c6 8.Nbd2
C44 2,769 Scotch Game: Göring Gambit 1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.c3
A85 2,768 Dutch Defense: Queen's Knight Variation 1.d4 f5 2.c4 Nf6 3.Nc3
E15 2,761 Queen's Indian Defense: Fianchetto Variation, Check Variation Intermezzo Line 1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Ba6 5.b3 Bb4+ 6.Bd2 Be7
A56 2,760 Benoni Defense: King's Indian System 1.d4 Nf6 2.c4 c5 3.d5 e5 4.Nc3 d6 5.e4 g6
A73 2,746 Benoni Defense: Classical Variation, Main line 1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.Nf3 Bg7 8.Be2 O-O 9.O-O
B08 2,738 Pirc Defense: Classical Variation, Quiet System Parma Defense 1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Nf3 Bg7 5.Be2 O-O 6.O-O Bg4
C93 2,724 Ruy Lopez: Closed Variations, Smyslov Defense 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d6 9.h3 h6
B20 2,720 Sicilian Defense: Lasker-Dunne Attack 1.e4 c5 2.g3
D79 2,704 Neo-Gruenfeld Defense: Ultra-delayed Exchange Variation 1.d4 Nf6 2.c4 g6 3.g3 d5 4.Bg2 Bg7 5.Nf3 O-O 6.O-O c6 7.cxd5 cxd5
A36 2,703 English Opening: Symmetrical Variation, Botvinnik System 1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.e4
C42 2,685 Russian Game: Classical Attack, Jaenisch Variation 1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.d4 d5 6.Bd3 Be7 7.O-O Nc6 8.c4
C64 2,684 Ruy Lopez: Classical Variation, Central Variation 1.e4 e5 2.Nf3 Nc6 3.Bb5 Bc5 4.c3
B35 2,680 Sicilian Defense: Dragon Variation, Modern Bc4 Variation 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 g6 5.Nc3 Bg7 6.Be3 Nf6 7.Bc4 Nc6
E08 2,667 Catalan Opening: Closed Variation 1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 Be7 5.Nf3 O-O 6.O-O Nbd7 7.Qc2
E12 2,658 Queen's Indian Defense: Kasparov-Petrosian Variation, Classical Variation 1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.Nc3 Bb7 5.a3 d5 6.cxd5 exd5
C42 2,655 Russian Game: Nimzowitsch Attack 1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.Nc3
D71 2,648 Neo-Gruenfeld Defense: Exchange Variation 1.d4 Nf6 2.c4 g6 3.g3 d5 4.Bg2 Bg7 5.cxd5 Nxd5
C03 2,644 French Defense: Tarrasch Variation, Modern System 1.e4 e6 2.d4 d5 3.Nd2 a6
B44 2,630 Sicilian Defense: Paulsen Variation, Szen Variation 1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nb5
C68 2,625 Ruy Lopez: Exchange Variation, Keres Variation 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6 dxc6 5.Nc3
A22 2,615 English Opening: King's English Variation, Two Knights' Variation Smyslov System 1.c4 e5 2.Nc3 Nf6 3.g3 Bb4
C95 2,598 Ruy Lopez: Morphy Defense, Breyer Defense Zaitsev Hybrid 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d6 9.h3 Nb8 10.d4 Nbd7
A64 2,577 Benoni Defense: Fianchetto Variation, Hastings Defense Main Line 1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.Nf3 g6 7.g3 Bg7 8.Bg2 O-O 9.O-O Nbd7 10.Nd2 a6 11.a4 Re8
D07 2,573 Queen's Gambit Refused: Chigorin Defense, Main Line 1.d4 d5 2.c4 Nc6 3.Nf3 Bg4
C01 2,572 French Defense: Exchange Variation, Monte Carlo Variation 1.e4 e6 2.d4 d5 3.exd5 exd5 4.c4
C45 2,568 Scotch Game: Classical Variation, Intermezzo Variation 1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Bc5 5.Nxc6 Qf6
C50 2,565 Italian Game: Giuoco Pianissimo, Italian Four Knights Variation 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.d3 Nf6 5.Nc3
B64 2,553 Sicilian Defense: Richter-Rauzer Variation, Classical Variation 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 7.Qd2 Be7 8.O-O-O O-O 9.f4
A84 2,550 Dutch Defense: Normal Variation 1.d4 f5 2.c4 Nf6
D00 2,548 Queen Pawn Game: Veresov Attack 1.d4 d5 2.Nc3
B01 2,517 Scandinavian Defense: Gubinsky-Melts Defense 1.e4 d5 2.exd5 Qxd5 3.Nc3 Qd6
E11 2,511 Bogo-Indian Defense: Vitolinsh Variation 1.d4 Nf6 2.c4 e6 3.Nf3 Bb4+ 4.Bd2 c5
E07 2,490 Catalan Opening: Closed Variation 1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 Be7 5.Nf3 O-O 6.O-O Nbd7
C14 2,487 French Defense: Classical Variation, Steinitz Variation 1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Be7 5.e5 Nfd7 6.Bxe7 Qxe7 7.f4
C26 2,470 Vienna Game: Stanley Variation 1.e4 e5 2.Nc3 Nf6 3.Bc4
E62 2,469 King's Indian Defense: Fianchetto Variation, Lesser Simagin (Spassky) 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Nf3 d6 5.g3 O-O 6.Bg2 Nc6 7.O-O Bf5
E97 2,462 King's Indian Defense: Orthodox Variation, Bayonet Attack Sokolov's Line 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O Nc6 8.d5 Ne7 9.b4 Nh5 10.Re1
C00 2,450 Queen Pawn Game: Franco-Sicilian Defense 1.d4 e6 2.e4 c5
A13 2,448 English Opening: Agincourt Defense, Catalan Defense Semi-Slav Defense 1.c4 e6 2.Nf3 d5 3.g3 Nf6 4.Bg2 c6
B00 2,442 Nimzowitsch Defense: Williams Variation 1.e4 Nc6 2.Nf3 d6
A00 2,408 Hungarian Opening: Indian Defense 1.g3 Nf6
C53 2,407 Italian Game: Classical Variation, Center Attack 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Nf6 5.d4
A07 2,402 King's Indian Attack: Double Fianchetto 1.Nf3 d5 2.g3 g6
B82 2,388 Sicilian Defense: Scheveningen Variation, Matanovic Attack 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.f4
E10 2,382 Blumenfeld Countergambit 1.d4 Nf6 2.c4 e6 3.Nf3 c5 4.d5 b5
C67 2,378 Ruy Lopez: Berlin Defense, l'Hermet Variation Berlin Wall Defense 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Nxe4 5.d4 Nd6 6.Bxc6 dxc6 7.dxe5 Nf5 8.Qxd8+ Kxd8
B13 2,355 Caro-Kann Defense: Panov Attack, Modern Defense Mieses Line 1.e4 c6 2.d4 d5 3.exd5 cxd5 4.c4 Nf6 5.Nc3 Nc6 6.Nf3 Bg4
E35 2,351 Nimzo-Indian Defense: Classical, Noa Variation , 5.cd ed 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 d5 5.cxd5 exd5
A08 2,350 King's Indian Attack: Sicilian Variation 1.Nf3 d5 2.g3 c5 3.Bg2 Nc6 4.O-O e6 5.d3 Nf6 6.Nbd2 Be7 7.e4 O-O 8.Re1
C07 2,345 French Defense: Tarrasch Variation, Chistyakov Defense 1.e4 e6 2.d4 d5 3.Nd2 c5 4.exd5 Qxd5
B90 2,343 Sicilian Defense: Najdorf Variation, Adams Attack 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.h3
B28 2,341 Sicilian Defense: O'Kelly Variation, Maroczy Bind 1.e4 c5 2.Nf3 a6 3.c4
B10 2,339 Caro-Kann Defense: Accelerated Panov Attack, Modern Variation 1.e4 c6 2.c4 d5 3.exd5 cxd5 4.cxd5 Nf6
D76 2,336 Neo-Gruenfeld Defense: Delayed Exchange Variation 1.d4 Nf6 2.c4 g6 3.g3 d5 4.Bg2 Bg7 5.Nf3 O-O 6.cxd5 Nxd5 7.O-O Nb6
E70 2,322 King's Indian Defense: Accelerated Averbakh Variation 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Bg5
B01 2,320 Scandinavian Defense: Marshall Variation 1.e4 d5 2.exd5 Nf6 3.d4 Nxd5
D93 2,299 Gruenfeld Defense: Three Knights Variation, Hungarian Variation 1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Bf4 O-O 6.e3
C11 2,298 French Defense: Classical Variation, Burn Variation Morozevich Line 1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 dxe4 5.Nxe4 Be7 6.Bxf6 gxf6
B07 2,283 Rat Defense: Accelerated Gurgenidze 1.e4 g6 2.d4 d6 3.Nc3 c6
C02 2,282 French Defense: Advance Variation, Wade Variation 1.e4 e6 2.d4 d5 3.e5 c5 4.c3 Qb6 5.Nf3 Bd7
B70 2,280 Sicilian Defense: Dragon Variation, Fianchetto Variation 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.g3
D08 2,277 Queen's Gambit Declined: Albin Countergambit 1.d4 d5 2.c4 e5
E88 2,262 King's Indian Defense: Saemisch Variation, Closed Variation c6 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Be3 e5 7.d5 c6
C28 2,252 Vienna Game: Vienna Gambit 1.e4 e5 2.Nc3 Nf6 3.f4
C78 2,252 Ruy Lopez: Closed Variations, Martinez Variation 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.d3
A05 2,248 King's Indian Attack: Wahls Defense 1.Nf3 Nf6 2.g3 g6 3.Bg2 Bg7 4.O-O O-O 5.d3 d5
A72 2,244 Benoni Defense: Classical without 9.O-O 1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.Nf3 Bg7 8.Be2 O-O
E18 2,241 Queen's Indian Defense: Classical Variation, Traditional Variation Nimowitsch Line 1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Be7 6.O-O O-O 7.Nc3 d5
C98 2,228 Ruy Lopez: Closed Variations, Chigorin Defense 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d6 9.h3 Na5 10.Bc2 c5 11.d4 Qc7 12.Nbd2 Nc6
E64 2,224 King's Indian Defense: Fianchetto Variation, Yugoslav Variation Rare Lines 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Nf3 d6 5.g3 O-O 6.Bg2 c5
E09 2,220 Catalan Opening: Closed Variation, Traditional Variation 1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 Be7 5.Nf3 O-O 6.O-O Nbd7 7.Qc2 c6 8.Nbd2 b6
A17 2,217 English Opening: Anglo-Indian Defense, Queens Indian Formation 1.c4 Nf6 2.Nc3 e6 3.Nf3 b6
E61 2,216 King's Indian Defense: Smyslov Variation 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Nf3 d6 5.Bg5
B07 2,214 Pirc Defense: Classical Variation 1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Be2
E73 2,202 King's Indian Defense: Averbakh Variation, Modern Defense 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Be2 O-O 6.Bg5 Na6
A05 2,200 King's Indian Attack: Spassky Variation 1.Nf3 Nf6 2.g3 b5
B58 2,176 Sicilian Defense: Boleslavsky Variation 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Be2 e5
C45 2,174 Scotch Game: Mieses Variation 1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Nf6 5.Nxc6 bxc6 6.e5
D51 2,171 Queen's Gambit Declined: Modern, Knight Defense 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Nbd7
C44 2,167 Ponziani Opening: Jaenisch Counterattack 1.e4 e5 2.Nf3 Nc6 3.c3 Nf6
E99 2,158 King's Indian Defense: Orthodox Variation, Classical System Neo-Classsical Line 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O Nc6 8.d5 Ne7 9.Ne1 Nd7 10.Be3
D30 2,157 Semi-Slav Defense: Quiet Variation 1.d4 d5 2.c4 e6 3.Nf3 Nf6 4.e3 c6 5.Nbd2 Nbd7
D19 2,150 Slav Defense: Czech Variation, Classical System Main Line 1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.a4 Bf5 6.e3 e6 7.Bxc4 Bb4 8.O-O O-O 9.Qe2
D16 2,143 Slav Defense: Soultanbeieff Variation 1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.a4 e6
A01 2,141 Nimzo-Larsen Attack: Modern Variation 1.b3 e5
E46 2,140 Nimzo-Indian Defense: Reshevsky Variation 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nge2
C49 2,134 Four Knights Game: Spanish Variation, Symmetrical Variation 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bb4 5.O-O O-O 6.d3 d6
E92 2,123 King's Indian Defense: Exchange Variation 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.dxe5
C03 2,120 French Defense: Tarrasch Variation, Morozevich Variation 1.e4 e6 2.d4 d5 3.Nd2 Be7
B20 2,118 Sicilian Defense: Staunton-Cochrane Variation 1.e4 c5 2.c4
B28 2,118 Sicilian Defense: O'Kelly Variation, Yerevan System 1.e4 c5 2.Nf3 a6 3.Nc3
E86 2,112 King's Indian Defense: Saemisch Variation 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Be3 e5 7.Nge2 c6
E62 2,112 King's Indian Defense: Fianchetto Variation, Larsen Defense 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Nf3 d6 5.g3 O-O 6.Bg2 c6 7.O-O Bf5
E97 2,106 King's Indian Defense: Orthodox Variation, Modern System 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O Nc6 8.d5 Ne7 9.Nd2
A52 2,095 Budapest Defense 1.d4 Nf6 2.c4 e5 3.dxe5 Ng4
E08 2,088 Catalan Opening: Closed, Qc2 & b3 1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 Be7 5.Nf3 O-O 6.O-O Nbd7 7.Qc2 c6 8.b3
B78 2,086 Sicilian Defense: Dragon Variation, Yugoslav Attack Old Line 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.f3 O-O 8.Qd2 Nc6 9.Bc4 Bd7 10.O-O-O Rc8
C61 2,074 Ruy Lopez: Bird Variation 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nd4
D05 2,072 Colle System 1.d4 d5 2.Nf3 Nf6 3.e3 e6 4.Bd3
A19 2,064 English Opening: Anglo-Indian Defense, Flohr-Mikenas-Carls Variation 1.c4 Nf6 2.Nc3 e6 3.e4 c5
C07 2,062 French Defense: Tarrasch Variation, Chistyakov Defense Modern Line 1.e4 e6 2.d4 d5 3.Nd2 c5 4.exd5 Qxd5 5.Ngf3 cxd4 6.Bc4 Qd6 7.O-O Nf6 8.Nb3 Nc6 9.Nbd4 Nxd4 10.Nxd4 a6
A50 2,062 Mexican Defense 1.d4 Nf6 2.c4 Nc6
B23 2,061 Sicilian Defense: Closed Variation, Korchnoi Defense 1.e4 c5 2.Nc3 e6 3.g3 d5
B11 2,061 Caro-Kann Defense: Two Knights Attack, Mindeno Variation 1.e4 c6 2.Nc3 d5 3.Nf3 Bg4
A91 2,058 Dutch Defense: Classical Variation 1.d4 f5 2.c4 Nf6 3.g3 e6 4.Bg2 Be7
D02 2,049 Queen Pawn Game: Barry Attack, Gruenfeld Variation 1.d4 Nf6 2.Nf3 g6 3.Nc3 d5 4.Bf4 Bg7 5.e3 O-O 6.Be2
A11 2,048 English Opening: Anglo-Indian Defense, Romanishin Variation 1.c4 Nf6 2.Nf3 e6 3.g3 a6
E10 2,047 Blumenfeld Countergambit: Dus-Chotimursky Variation 1.d4 Nf6 2.c4 e6 3.Nf3 c5 4.d5 b5 5.Bg5
E93 2,022 King's Indian Defense: Petrosian Variation, Normal Defense 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.d5 Nbd7
B15 2,010 Caro-Kann Defense: Tartakower Variation 1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nf6 5.Nxf6+ exf6
E00 2,000 Kangaroo Defense 1.d4 e6 2.c4 Bb4+
D88 2,000 Gruenfeld Defense: Exchange Variation, Spassky Variation 1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Bc4 O-O 8.Ne2 c5 9.O-O Nc6 10.Be3 cxd4 11.cxd4
E51 2,000 Nimzo-Indian Defense: Normal Variation, Ragozin Variation 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 d5
E12 1,995 Queen's Indian Defense: Kasparov-Petrosian Variation, Petrosian Attack 1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.Nc3 Bb7 5.a3 d5 6.cxd5 Nxd5 7.e3
E94 1,986 King's Indian Defense: Orthodox Variation, Positional Defense Closed Line 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O Nbd7 8.d5
A00 1,978 Hungarian Opening: Slav Formation 1.g3 d5 2.Bg2 c6
D94 1,977 Gruenfeld Defense: Three Knights Variation, Burille Variation Reversed Tarrasch 1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.e3 c5 6.Be2 cxd4 7.exd4 Nc6 8.O-O O-O
D03 1,972 Queen Pawn Game: Torre Attack, Gruenfeld Variation Main Line 1.d4 d5 2.Nf3 Nf6 3.Bg5 g6 4.e3 Bg7 5.Nbd2 O-O
B28 1,972 Sicilian Defense: O'Kelly Variation, Venice System 1.e4 c5 2.Nf3 a6 3.c3
C65 1,970 Ruy Lopez: Berlin Defense, Beverwijk Variation 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Bc5
C16 1,960 French Defense: Winawer Variation, Petrosian Variation 1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 Qd7
A12 1,959 Reti Opening: Anglo-Slav Variation, Bogoljubow Variation 1.Nf3 d5 2.c4 c6 3.b3 Nf6 4.Bb2
D45 1,954 Semi-Slav Defense: Stoltz Variation, Shabalov Attack 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Qc2 Bd6 7.g4
E62 1,953 King's Indian Defense: Fianchetto Variation, Simagin Variation 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Nf3 d6 5.g3 O-O 6.Bg2 Nc6 7.O-O Bg4
B73 1,952 Sicilian Defense: Dragon Variation, Classical Variation 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be2 Bg7 7.Be3 Nc6 8.O-O
D01 1,944 Queen Pawn Game: Veresov Attack, Two Knights System 1.d4 d5 2.Nc3 Nf6 3.Bg5 Nbd7 4.Nf3
E42 1,926 Nimzo-Indian Defense: Huebner Variation, Rubinstein Variation 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 c5 5.Nge2
C73 1,926 Ruy Lopez: Morphy Defense, Modern Steinitz Defense 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.Bxc6+ bxc6 6.d4
E44 1,924 Nimzo-Indian Defense: Fischer Variation 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 5.Nge2
C96 1,919 Ruy Lopez: Closed Variations, Keres Defense 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d6 9.h3 Na5 10.Bc2 c5 11.d4 Nd7
B05 1,918 Alekhine Defense: Modern, Flohr Variation 1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.Nf3 Bg4 5.Be2 c6
A80 1,916 Queen Pawn Game: Veresov Atack, Dutch System 1.d4 d5 2.Nc3 f5
E12 1,892 Queen's Indian Defense: Kasparov-Petrosian Variation, Kasparov Attack 1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.Nc3 Bb7 5.a3 d5 6.cxd5 Nxd5 7.Qc2
D63 1,887 Queen's Gambit Declined: Orthodox Defense, Hennegerger Variation 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 Nbd7 7.Rc1 a6
D52 1,884 Queen's Gambit Declined: Cambridge Springs Defense: Bogoljubow Variation 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Nbd7 5.e3 c6 6.Nf3 Qa5 7.Nd2 Bb4 8.Qc2
B01 1,878 Scandinavian Defense: Richter Variation 1.e4 d5 2.exd5 Nf6 3.d4 Nxd5 4.Nf3 g6
A14 1,878 English Opening: Agincourt Defense, Keres Defense 1.c4 e6 2.Nf3 d5 3.g3 Nf6 4.Bg2 Be7 5.O-O c5 6.cxd5 Nxd5 7.Nc3 Nc6
D53 1,875 Queen's Gambit Declined: Miles Variation 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.Nf3 O-O 6.Qc2
E82 1,836 King's Indian Defense: Saemisch Variation, Double Fianchetto 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Be3 b6
C43 1,832 Russian Game: Modern Attack, Center Variation 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3
B33 1,828 Sicilian Defense: Lasker-Pelikan Variation, Sveshnikov Variation Novosibirsk Variation 1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e5 6.Ndb5 d6 7.Bg5 a6 8.Na3 b5 9.Bxf6 gxf6 10.Nd5 Bg7
C50 1,828 Italian Game: Giuoco Pianissimo 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.d3
D20 1,828 Queen's Gambit Accepted: Central Variation, McDonnell Defense 1.d4 d5 2.c4 dxc4 3.e4 e5
A28 1,827 English Opening: King's English Variation, Four Knights Variation Flexible Line 1.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.d3
B52 1,823 Sicilian Defense: Canal-Sokolsky attack, Sokolsky Variation 1.e4 c5 2.Nf3 d6 3.Bb5+ Bd7 4.Bxd7+ Qxd7 5.c4
D21 1,819 Queen's Gambit Accepted: Gunsberg Defense 1.d4 d5 2.c4 dxc4 3.Nf3 c5
B20 1,812 Sicilian Defense: Chameleon 1.e4 c5 2.Ne2
D00 1,811 Queen Pawn Game: Levitsky Attack 1.d4 d5 2.Bg5
C85 1,807 Ruy Lopez: Closed Variations, Delayed Exchange 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Bxc6
A23 1,806 English Opening: King's English Variation, Two Knights' Variation Keres Variation 1.c4 e5 2.Nc3 Nf6 3.g3 c6
D34 1,764 Tarrasch Defense: Classical Variation, Advance Variation 1.d4 d5 2.c4 e6 3.Nc3 c5 4.cxd5 exd5 5.Nf3 Nc6 6.g3 Nf6 7.Bg2 Be7 8.O-O O-O 9.Bg5 c4
C42 1,754 Russian Game: Classical Attack, Chigorin Variation Main Line 1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.d4 d5 6.Bd3 Be7 7.O-O Nc6 8.c4 Nb4 9.Be2
E68 1,752 King's Indian Defense: Fianchetto Variation, Long Variation 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Nf3 d6 5.g3 O-O 6.Bg2 Nbd7 7.O-O e5 8.e4 Re8 9.h3 exd4 10.Nxd4 Nc5 11.Re1 a5
C13 1,726 French Defense: Alekhine-Chatard Attack 1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Be7 5.e5 Nfd7 6.h4
D15 1,718 Slav Defense: Alekhine Variation 1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.e3
C50 1,708 Italian Game: Giuoco Pianissimo, Canal Variation 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.d3 Nf6 5.Nc3 d6 6.Bg5
B81 1,708 Sicilian Defense: Scheveningen Variation, Delayed Keres Attack 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Be3 a6 7.g4
E33 1,705 Nimzo-Indian Defense: Classical Variation, Zurich Variation 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 Nc6
A00 1,704 Polish Opening 1.b4
A84 1,702 Dutch Defense: Rubinstein Variation 1.d4 f5 2.c4 e6 3.Nc3
E95 1,694 King's Indian,Orthodox, 7...Nbd7, 8.Re1 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O Nbd7 8.Re1
A57 1,689 Benko Gambit: Accepted, Pawn Return Variation 1.d4 Nf6 2.c4 c5 3.d5 b5 4.cxb5 a6 5.b6
C41 1,686 Philidor Defense: Hanham Variation 1.e4 e5 2.Nf3 d6 3.d4 Nd7
D15 1,671 Slav Defense: Geller Gambit 1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.e4
A32 1,669 English Opening: Symmetrical Variation, Anti-Benoni Variation Spielmann Defense 1.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6
B10 1,668 Caro-Kann Defense: Accelerated Panov Attack, Open Variation 1.e4 c6 2.c4 e5
B01 1,668 Scandinavian Defense: Panov Transfer 1.e4 d5 2.exd5 Nf6 3.c4 c6
C14 1,668 French Defense: Classical Variation 1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Be7 5.e5 Nfd7 6.Bxe7 Qxe7
D21 1,666 Queen's Gambit Accepted: Rosenthal Variation 1.d4 d5 2.c4 dxc4 3.Nf3 e6
C50 1,664 Italian Game: Hungarian Defense 1.e4 e5 2.Nf3 Nc6 3.Bc4 Be7
A82 1,663 Dutch Defense: Staunton Gambit, Accepted 1.d4 f5 2.e4 fxe4
A53 1,659 Old Indian: Czech Variation 1.d4 Nf6 2.c4 d6 3.Nc3 c6 4.Nf3
D83 1,658 Gruenfeld Defense: Brinckmann Attack, Grünfeld Gambit 1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Bf4 Bg7 5.e3 O-O
E50 1,645 Nimzo-Indian Defense: 4.e3 e8g8, 5.Nf3, without ...d5 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3
C05 1,643 French Defense: Tarrasch Variation, Pawn Center Variation 1.e4 e6 2.d4 d5 3.Nd2 Nf6 4.e5 Nfd7 5.f4
D20 1,638 Queen's Gambit Accepted: Central Variation, Alekhine System 1.d4 d5 2.c4 dxc4 3.e4 Nf6
E24 1,631 Nimzo-Indian Defense: Saemisch Variation, Accelerated 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.a3 Bxc3+ 5.bxc3
C31 1,630 King's Gambit: Falkbeer Countergambit, Accepted 1.e4 e5 2.f4 d5 3.exd5
C02 1,628 French Defense: Advance Variation, Nimzowitsch System 1.e4 e6 2.d4 d5 3.e5 c5 4.Nf3
D00 1,614 Blackmar-Diemer Gambit 1.d4 d5 2.e4
C88 1,607 Ruy Lopez: Closed, anti-Marshall 8.a4 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.a4
A25 1,600 English Opening: King's English Variation, Hungarian Attack 1.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Rb1
D46 1,600 Semi-Slav Defense: Bogoljubow Variation 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 Be7
B06 1,593 Modern Defense: Three Pawns Attack 1.e4 g6 2.d4 Bg7 3.f4
B01 1,592 Scandinavian Defense: Bronstein Variation 1.e4 d5 2.exd5 Qxd5 3.Nc3 Qd6 4.d4 Nf6 5.Nf3 a6
C84 1,581 Ruy Lopez: Closed Variations, Center Attack 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.d4
A97 1,580 Dutch Defense: Classical Variation, Ilyin-Zhenevsky Variation 1.d4 f5 2.c4 Nf6 3.g3 e6 4.Bg2 Be7 5.Nf3 O-O 6.O-O d6 7.Nc3 Qe8
D41 1,576 Queen's Gambit Declined: Semi-Tarrasch Defense, Exchange Variation 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c5 5.cxd5 Nxd5 6.e4
C42 1,564 Russian Game: Classical Attack, Staunton Variation 1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.d4 d5 6.Bd3 Bd6 7.O-O O-O 8.c4 c6
B11 1,555 Caro-Kann Defense: Two Knights Attack, Mindeno Variation Exchange Line 1.e4 c6 2.Nc3 d5 3.Nf3 Bg4 4.h3 Bxf3
E26 1,554 Nimzo-Indian Defense: Saemisch Variation 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.a3 Bxc3+ 5.bxc3 c5 6.e3
C57 1,554 Italian Game: Two Knights Defense, Knight Attack Normal Variation 1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 d5
C66 1,545 Ruy Lopez: Berlin Defense, Improved Steinitz Defense 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O d6
D95 1,544 Gruenfeld Defense: Three Knights Variation, Vienna Variation 1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.e3 O-O 6.Qb3
A38 1,535 English Opening: Symmetrical Variation, Duchamp Variation 1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.d3
E41 1,530 Nimzo-Indian Defense: Huebner Variation, Main Line 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 c5 5.Bd3 Nc6 6.Nf3 Bxc3+ 7.bxc3 d6
A58 1,530 Benko Gambit: Fianchetto Variation 1.d4 Nf6 2.c4 c5 3.d5 b5 4.cxb5 a6 5.bxa6 Bxa6 6.Nc3 d6 7.Nf3 g6 8.g3
B02 1,522 Alekhine Defense: Two Pawn Attack 1.e4 Nf6 2.e5 Nd5 3.c4
E50 1,522 Nimzo-Indian Defense: Normal Variation, Hübner Deferred 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 c5
C00 1,520 French Defense: Queen's Knight 1.e4 e6 2.Nc3
D05 1,518 Rubinstein Opening 1.d4 d5 2.Nf3 Nf6 3.e3 e6 4.Bd3 c5 5.b3
B01 1,517 Scandinavian Defense: Classical Variation 1.e4 d5 2.exd5 Qxd5 3.Nc3 Qa5 4.d4 Nf6 5.Nf3 Bf5
E55 1,512 Nimzo-Indian Defense: Normal Variation, Gligoric System Bronstein Variation 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 d5 6.Bd3 c5 7.O-O dxc4 8.Bxc4 Nbd7
E39 1,502 Nimzo-Indian Defense: Classical Variation, Berlin Variation Pirc Variation 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 c5 5.dxc5 O-O
D42 1,497 Queen's Gambit Declined: Semi-Tarrasch Defense, Main Line 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c5 5.cxd5 Nxd5 6.e3 Nc6 7.Bd3
C18 1,494 French Defense: Winawer Variation, Classical Variation 1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.a3 Bxc3+ 6.bxc3 Qc7
B17 1,486 Caro-Kann Defense: Karpov Variation, Modern Variation Kasparov Attack 1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nd7 5.Nf3 Ngf6 6.Ng3
C22 1,484 Center Game: Normal Variation 1.e4 e5 2.d4 exd4 3.Qxd4 Nc6
E66 1,478 King's Indian Defense: Fianchetto Variation, Yugoslav Variation Exchange Line 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Nf3 d6 5.g3 O-O 6.Bg2 c5 7.O-O Nc6 8.dxc5 dxc5
E33 1,470 Nimzo-Indian Defense: Classical Variation, Milner-Barry Variation 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 Nc6 5.Nf3 d6
D98 1,458 Gruenfeld Defense: Russian Variation, Smyslov Variation 1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Qb3 dxc4 6.Qxc4 O-O 7.e4 Bg4
A59 1,457 Benko Gambit: Accepted, King Walk Variation 1.d4 Nf6 2.c4 c5 3.d5 b5 4.cxb5 a6 5.bxa6 Bxa6 6.Nc3 d6 7.e4 Bxf1 8.Kxf1 g6 9.g3 Bg7 10.Kg2 O-O 11.Nf3
A09 1,455 Reti Opening: Advance Variation 1.Nf3 d5 2.c4 d4
C21 1,443 Center Game: Accepted 1.e4 e5 2.d4 exd4
E16 1,431 Queen's Indian Defense: Capablanca Variation 1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Bb4+
D31 1,430 Queen's Gambit Declined: Semi-Slav, Abrahams Variation 1.d4 d5 2.c4 e6 3.Nc3 c6 4.Nf3 dxc4 5.a4 Bb4 6.e3 b5 7.Bd2 a5
D16 1,420 Slav Defense: Steiner Variation 1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.a4 Bg4
C12 1,418 French Defense: MacCutcheon Variation, Lasker Variation 1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Bb4 5.e5 h6 6.Bd2 Bxc3
A43 1,418 Benoni Defense: Old Benoni 1.d4 c5 2.d5 d6
A46 1,411 Torre Attack: Classical Defense, Nimzowitsch Variation 1.d4 Nf6 2.Nf3 e6 3.Bg5 h6
D37 1,401 Queen's Gambit Declined: Harrwitz Attack, Fianchetto Defense 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 Be7 5.Bf4 O-O 6.e3 b6
D97 1,400 Gruenfeld Defense: Russian Variation, Hungarian Variation 1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Qb3 dxc4 6.Qxc4 O-O 7.e4 a6
C46 1,398 Three Knights Opening: Steinitz Defense 1.e4 e5 2.Nf3 Nc6 3.Nc3 g6
C02 1,397 French Defense: Advance Variation, Milner-Barry Gambit 1.e4 e6 2.d4 d5 3.e5 c5 4.c3 Nc6 5.Nf3 Qb6 6.Bd3
B17 1,397 Caro-Kann Defense: Karpov Variation, Modern Variation 1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nd7 5.Ng5
C22 1,396 Center Game: Paulsen Attack Variation 1.e4 e5 2.d4 exd4 3.Qxd4 Nc6 4.Qe3
D67 1,386 Queen's Gambit Declined: Orthodox Defense, Main Line 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 Nbd7 7.Rc1 c6 8.Bd3 dxc4 9.Bxc4 Nd5 10.Bxe7 Qxe7 11.O-O
C50 1,385 Four Knights Game: Italian Variation 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Nc3 Nf6
B85 1,380 Sicilian Defense: Scheveningen Variation, Classical Variation Paulsen Variation 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Be2 a6 7.O-O Qc7 8.f4 Nc6 9.Be3
A00 1,379 Hungarian Opening: Sicilian Invitation 1.g3 c5
A21 1,377 English Opening: King's English Variation, Kramnik-Shirov Counter 1.c4 e5 2.Nc3 Bb4
C10 1,368 French Defense: Rubinstein Variation, Fort Knox Variation 1.e4 e6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Bd7 5.Nf3 Bc6
C64 1,368 Ruy Lopez: Classical Variation, Zukertort Gambit 1.e4 e5 2.Nf3 Nc6 3.Bb5 Bc5 4.O-O Nf6 5.c3
D24 1,365 Queen's Gambit Accepted: Bogoljubow Defense 1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.Nc3 a6 5.e4
C89 1,364 Ruy Lopez: Marshall Attack, Main Line 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d5 9.exd5 Nxd5 10.Nxe5 Nxe5 11.Rxe5 c6 12.d4
D26 1,362 Queen's Gambit Accepted: Classical Defense, Steinitz Variation Development Variation 1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5 6.O-O Nc6
D55 1,362 Queen's Gambit Declined: Anti-Tartakower Variation, Petrosian Variation 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 h6 7.Bxf6 Bxf6 8.Rc1 c6 9.Bd3 Nd7 10.O-O dxc4 11.Bxc4
C40 1,362 Latvian Gambit 1.e4 e5 2.Nf3 f5
E15 1,360 Queen's Indian Defense: Fianchetto Variation, Nimzowitsch Variation Nimzowitsch Attack 1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Ba6 5.Qa4+
A21 1,356 English Opening: King's English Variation 1.c4 e5 2.Nc3 d6 3.Nf3
C45 1,354 Scotch Game: Scotch Gambit, Advance Variation 1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Bc4 Nf6 5.e5
C00 1,353 French Defense: Chigorin Variation 1.e4 e6 2.Qe2
E12 1,353 Queen's Indian Defense: Miles Variation 1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.Bf4
D55 1,352 Queen's Gambit Declined: Anti-Tartakower Variation 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 h6 7.Bxf6
D60 1,350 Queen's Gambit Declined: Orthodox Defense, Botvinnik Variation 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 Nbd7 7.Bd3
D94 1,350 Gruenfeld Defense: Smyslov Defense 1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.e3 O-O 6.Bd3 c6 7.O-O Bg4
C45 1,344 Scotch Game: Haxo Gambit 1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Bc4 Bc5
C02 1,341 French Defense: Advance Variation, Lputian Variation 1.e4 e6 2.d4 d5 3.e5 c5 4.c3 Nc6 5.Nf3 Qb6 6.a3 Nh6
B44 1,340 Sicilian Defense: Paulsen Variation, Modern Line 1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nb5 d6 6.c4 Nf6 7.N1c3 a6 8.Na3 Be7 9.Be2 O-O 10.O-O b6
A28 1,338 English Opening: King's English Variation, Four Knights Variation Botvinnik Line 1.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.e4
C79 1,336 Ruy Lopez: Morphy Defense, Steinitz Deferred 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O d6
A86 1,332 Dutch Defense: Leningrad Variation 1.d4 f5 2.c4 Nf6 3.g3 g6
D05 1,329 Colle System: Traditional Colle 1.d4 d5 2.Nf3 Nf6 3.e3 e6 4.Bd3 c5 5.c3
B89 1,325 Sicilian Defense: Velimirovic Attack 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Bc4 Nc6 7.Be3 Be7 8.Qe2
D31 1,322 Semi-Slav Defense: Marshall Gambit, Main Line 1.d4 d5 2.c4 e6 3.Nc3 c6 4.e4 dxe4 5.Nxe4 Bb4+ 5.Bd2
E15 1,314 Queen's Indian Defense: Fianchetto Variation, Saemisch Variation 1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 c5
E73 1,312 King's Indian Defense: Averbakh Variation, Geller Defense 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Be2 O-O 6.Bg5 Nbd7
C64 1,308 Ruy Lopez: Classical Defense: Benelux Variation 1.e4 e5 2.Nf3 Nc6 3.Bb5 Bc5 4.c3 Nf6 5.O-O O-O 6.d4 Bb6
A61 1,300 Benoni Defense: Knight's Tour Variation 1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.Nf3 g6 7.Nd2
A26 1,299 English Opening: King's English Variation, Botvinnik System 1.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.e4
B33 1,290 Sicilian Defense: Lasker-Pelikan Variation, Bird Variation 1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e5 6.Ndb5 d6 7.Bg5 a6 8.Na3 Be6
C78 1,290 Ruy Lopez: Morphy Defense, Neo-Archangelsk Variation 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Bc5
C67 1,287 Ruy Lopez: Berlin Defense, Rio de Janeiro Variation 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Nxe4 5.d4 Be7
B76 1,285 Sicilian Defense: Dragon Variation, Yugoslav Attack Panov Variation 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.f3 O-O 8.Qd2 Nc6 9.g4
D44 1,284 Semi-Slav Defense: Botvinnik System 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.Bg5 dxc4 6.e4 b5 7.e5 h6 8.Bh4 g5 9.Nxg5
D36 1,282 Queen's Gambit Declined: Exchange Variation, Reshevsky Variation 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.cxd5 exd5 5.Bg5 c6 6.Qc2
C80 1,278 Ruy Lopez: Open Variations, Bernstein Variation 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 Be6 9.Nbd2
A01 1,276 Nimzo-Larsen Attack: Classical Variation 1.b3 d5
D00 1,276 Queen Pawn Game: Mason Attack 1.d4 d5 2.Bf4
B04 1,276 Alekhine Defense: Modern Variation, Larsen Variation 1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.Nf3 dxe5
E64 1,271 King's Indian Defense: Fianchetto Variation, Double Fianchetto Attack 1.d4 Nf6 2.c4 g6 3.Nf3 Bg7 4.g3 d6 5.Bg2 O-O 6.O-O Nbd7 7.Nc3 e5 8.b3
C46 1,269 Four Knights Game: Italian Variation 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bc4
E49 1,263 Nimzo-Indian Defense: Normal Variation, Botvinnik System 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd3 d5 6.a3 Bxc3+ 7.bxc3
A67 1,251 Benoni Defense: Taimanov Variation 1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.f4 Bg7 8.Bb5+
A16 1,246 English Opening: Anglo-Indian Defense, Anglo-Grünfeld Variation 1.c4 Nf6 2.Nc3 d5 3.cxd5 Nxd5 4.g3 g6 5.Bg2 Nb6
C52 1,246 Italian Game: Evans Gambit, Main Line 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 5.c3 Ba5
D01 1,244 Queen Pawn Game: Veresov Atack, Richter Variation 1.d4 d5 2.Nc3 Nf6 3.Bg5 Bf5 4.f3
B29 1,239 Sicilian Defense: Nimzowitsch Variation, Advance Variation 1.e4 c5 2.Nf3 Nf6 3.e5
C76 1,238 Ruy Lopez: Morphy Defense, Modern Steinitz Defense Fianchetto Variation 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.c3 Bd7 6.d4 g6
B96 1,234 Sicilian Defense: Najdorf Variation, Neo-Classical Defense 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6 7.f4 Nc6
A14 1,233 English Opening: Agincourt Defense, Tarrasch Defense 1.c4 e6 2.Nf3 d5 3.g3 Nf6 4.Bg2 c5 5.b3 Nc6 6.O-O Be7
C77 1,230 Ruy Lopez: Morphy Defense, Tarrasch Variation 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.Nc3
B00 1,229 Owen Defense 1.e4 b6
D56 1,225 Queen's Gambit Declined: Lasker Defense 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 h6 7.Bh4 Ne4
A40 1,220 Mikenas Defense 1.d4 Nc6
C55 1,220 Italian Game: Scotch Gambit, Max Lange Attack 1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d4 exd4 5.O-O Bc5
D07 1,214 Queen's Gambit Refused: Chigorin Defense, Exchange Variation 1.d4 d5 2.c4 Nc6 3.cxd5 Qxd5
C75 1,213 Ruy Lopez: Morphy Defense, Modern Steinitz Defense 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.c3 Bd7
C89 1,210 Ruy Lopez: Marshall Attack, Modern Main Line 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d5 9.exd5 Nxd5 10.Nxe5 Nxe5 11.Rxe5 c6 12.d4 Bd6 13.Re1 Qh4 14.g3 Qh3
C00 1,206 French Defense: Steiner Variation 1.e4 e6 2.c4
B61 1,204 Sicilian Defense: Richter-Rauzer Variation, Modern Variation 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 Bd7 7.Qd2
B21 1,197 Sicilian Defense: Smith-Morra Gambit, Accepted Scheveningen Formation 1.e4 c5 2.d4 cxd4 3.c3 dxc3 4.Nxc3 Nc6 5.Nf3 d6 6.Bc4 e6
C57 1,188 Italian Game: Two Knights Defense, Polerio Defense 1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 d5 5.exd5 Na5
A83 1,186 Dutch Defense: Staunton Gambit 1.d4 f5 2.e4 fxe4 3.Nc3 Nf6 4.Bg5
D06 1,185 Queen's Gambit Refused: Chigorin Defense, Modern Gambit 1.d4 d5 2.c4 Nc6 3.Nc3 Nf6 4.Nf3 dxc4
A80 1,182 Dutch Defense: Hopton Attack 1.d4 f5 2.Bg5
A54 1,182 Old Indian Defense: Tartakower-Indian 1.d4 Nf6 2.c4 d6 3.Nf3 Bg4
A28 1,182 English Opening: King's English Variation, Four Knights Variation Korchnoi Line 1.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.a3
A92 1,182 Dutch Defense: Stonewall Variation 1.d4 f5 2.c4 Nf6 3.g3 e6 4.Bg2 Be7 5.Nf3 O-O 6.O-O d5
D03 1,179 Queen Pawn Game: Torre Attack, Gossip Variation 1.d4 d5 2.Nf3 Nf6 3.Bg5 Ne4
B17 1,175 Caro-Kann Defense: Karpov Variation, Smyslov Variation 1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nd7 5.Bc4 Ngf6 6.Ng5 e6 7.Qe2 Nb6
E17 1,172 Queen's Indian Defense: Kasparov-Petrosian Variation, Hedgehog Variation 1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.Nc3 Bb7 5.a3 g6
C68 1,170 Ruy Lopez: Exchange Variation, King's Bishop Variation 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6 dxc6 5.O-O Bd6
C18 1,165 French Defense: Winawer Variation, Retreat Variation 1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.a3 Ba5
D97 1,160 Gruenfeld Defense: Russian Variation, Prins Variation 1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Qb3 dxc4 6.Qxc4 O-O 7.e4 Na6
E61 1,160 King's Indian Defense: Semi-Classical Variation 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Nf3 O-O 5.e3 d6 6.Be2
C82 1,160 Ruy Lopez: Open Variations, St, Petersburg Variation 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 Be6 9.c3 Bc5 10.Nbd2
C44 1,158 Scotch Game: Scotch Gambit, Göring Gambit Declined 1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.c3 d5
B06 1,156 Modern Defense: Modern Pterodactyl 1.e4 g6 2.d4 Bg7 3.Nc3 c5
B07 1,152 Pirc Defense: Bayonet Attack 1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Be2 Bg7 5.h4
B03 1,152 Alekhine Defense: Four Pawns Attack 1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.c4 Nb6 5.f4
C49 1,148 Four Knights Game: Symmetrical, Metger unpin 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bb4 5.O-O O-O 6.d3 d6 7.Bg5 Bxc3 8.bxc3 Qe7
C55 1,142 Italian Game: Scotch Gambit 1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d4 exd4 5.O-O
A58 1,140 Benko Gambit: Zaitsev System 1.d4 Nf6 2.c4 c5 3.d5 b5 4.cxb5 a6 5.Nc3
A57 1,138 Benko Gambit: Accepted, Modern Variation 1.d4 Nf6 2.c4 c5 3.d5 b5 4.cxb5 a6 5.e3
A04 1,137 Zukertort Opening: Black Mustang Defense 1.Nf3 Nc6
A36 1,134 English Opening: Symmetrical Variation, Botvinnik System Reversed 1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.e3 e5
B22 1,132 Sicilian Defense: Alapin Variation, Stoltz Attack 1.e4 c5 2.c3 Nf6 3.e5 Nd5 4.Nf3 Nc6 5.Bc4 Nb6 6.Bb3
A53 1,131 Old Indian: Czech Variation w/Nc3 1.d4 Nf6 2.c4 d6 3.Nc3 c6
A47 1,131 Indian Game Defense: Pseudo-Queen's Indian, Marienbad System 1.d4 Nf6 2.Nf3 b6 3.g3 Bb7 4.Bg2 c5
B40 1,128 Sicilian Defense: Pin Variation 1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Bb4
C11 1,127 French Defense: Classical Variation, Delayed Exchange Variation 1.e4 e6 2.d4 d5 3.Nc3 Nf6 3.exd5
B79 1,125 Sicilian Defense: Dragon, Yugoslav attack, 12.h4 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.f3 O-O 8.Qd2 Nc6 9.Bc4 Bd7 10.O-O-O Qa5 11.Bb3 Rfc8 12.h4
B40 1,124 Sicilian Defense: Kveinis Variation 1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Qb6
B04 1,116 Alekhine Defense: Modern Variation, Larsen-Haakert Variation 1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.Nf3 Nc6
B92 1,115 Sicilian Defense: Najdorf Variation, Opocensky Variation Modern Line 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Be2 e5 7.Nb3 Be7 8.O-O Be6
E12 1,113 Queen's Indian Defense: Kasparov-Petrosian Variation, Marco Defense 1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.Nc3 Bb7 5.a3 Be7
A07 1,100 King's Indian Attack: Keres Variation 1.Nf3 d5 2.g3 Bg4 3.Bg2 Nd7
E52 1,097 Nimzo-Indian Defense: Normal Variation, Schlechter Defense 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 d5 6.Bd3 b6
B45 1,095 Sicilian Defense: Four Knights Variation, Exchange Variation 1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Nxc6
D11 1,094 Slav Defense: Breyer Variation 1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nbd2
D07 1,089 Queen's Gambit Refused: Chigorin Defense, Janowski Variation 1.d4 d5 2.c4 Nc6 3.Nc3 dxc4 4.Nf3
B03 1,084 Alekhine Defense: Four pawns attack, 6...Nc6 1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.c4 Nb6 5.f4 dxe5 6.fxe5 Nc6
A33 1,072 English Opening: Symmetrical Variation, Anti-Benoni Variation Geller Variation 1.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.Nc3 Nc6 6.g3 Qb6
E90 1,070 King's Indian Defense: Larsen Variation 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be3
C66 1,068 Ruy Lopez: Berlin Defense, Hedgehog Variation 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O d6 5.d4 Bd7 6.Nc3 Be7
E42 1,066 Nimzo-Indian Defense: Huebner Variation, Rubinstein Variation Main Line 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 c5 5.Nge2 cxd4 6.exd4 O-O 7.a3
B28 1,065 Sicilian Defense: O'Kelly Variation, Normal System 1.e4 c5 2.Nf3 a6 3.d4
D17 1,065 Slav Defense: Czech Variation, Wiesbaden Variation 1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.a4 Bf5 6.Ne5 e6
C60 1,064 Ruy Lopez: Cozio Defense 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nge7
B46 1,062 Sicilian Defense: Paulsen Variation, Taimanov Variation 1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 a6 6.Be2 Nge7
B56 1,061 Sicilian Defense: Kupreichik Variation 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Bd7
A13 1,059 English Opening: Agincourt Defense, Wimpy System 1.c4 e6 2.Nf3 d5 3.b3 Nf6 4.Bb2 c5 5.e3
C86 1,058 Ruy Lopez: Closed Variations, Worrall Attack Delayed castling line 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Qe2 b5 7.Bb3 d6
C89 1,058 Ruy Lopez: Marshall Attack, Modern Variation 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d5 9.exd5 Nxd5 10.Nxe5 Nxe5 11.Rxe5 c6
C25 1,054 Vienna Game: Paulsen Variation 1.e4 e5 2.Nc3 Nc6 3.g3
C58 1,054 Italian Game: Two Knights Defense, Polerio Defense Bishop Check line 1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 d5 5.exd5 Na5 6.Bb5+
E99 1,050 King's Indian Defense: Orthodox Variation, Classical System Traditional Line 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O Nc6 8.d5 Ne7 9.Ne1 Nd7 10.f3 f5
B83 1,047 Sicilian Defense: Scheveningen Variation, Modern Variation 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Be2 Nc6 7.O-O Be7 8.Be3 O-O 9.f4 Bd7 10.Nb3
D09 1,045 Queen's Gambit Refused: Albin Countergambit, Fianchetto Variation 1.d4 d5 2.c4 e5 3.dxe5 d4 4.Nf3 Nc6 5.g3
D25 1,044 Queen's Gambit Accepted: Smyslov Variation 1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 g6
B07 1,038 King Pawn Game: Maroczy Defense 1.e4 d6 2.d4 e5
B00 1,038 Nimzowitsch Defense: Scandinavian Variation, Bogoljubow Variation 1.e4 Nc6 2.d4 d5 3.Nc3
E11 1,027 Queen's Indian Defense: Petrosian Variation, Farago Defense 1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.a3 Ba6 5.Qc2 Bb7
B03 1,024 Alekhine Defense: Four Pawns Attack, Main Line 1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.c4 Nb6 5.f4 dxe5 6.fxe5 Nc6 7.Be3
B09 1,024 Pirc Defense: Austrian Attack, Kurajica Variation 1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.f4 Bg7 5.Nf3 O-O 6.Be3
B84 1,024 Sicilian Defense: Najdorf Variation, Scheveningen Variation 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Be2 a6 7.O-O Nbd7
B71 1,020 Sicilian Defense: Dragon Variation, Levenfish Variation 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.f4
B04 1,020 Alekhine Defense: Modern Variation, Schmid Variation 1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.Nf3 Nb6
A34 1,016 English Opening: Symmetrical Variation, Rubinstein Variation 1.c4 c5 2.Nc3 Nf6 3.g3 d5 4.cxd5 Nxd5 5.Bg2 Nc7
D39 1,014 Queen's Gambit Declined: Ragozin Defense, Vienna Variation 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 Bb4 5.Bg5 dxc4
B28 1,012 Sicilian Defense: O'Kelly Variation, Maroczy Bind Paulsen Line 1.e4 c5 2.Nf3 a6 3.c4 e6
E04 1,012 Catalan Opening: Open Defense, Tarrasch Defense 1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 c5 5.Nf3 Nc6
C42 1,010 Russian Game: Classical Attack, Marshall Variation 1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.d4 d5 6.Bd3 Bd6
A00 1,010 Polish Opening: King's Indian Variation, Sokolsky Attack 1.b4 Nf6 2.Bb2 g6 3.c4 Bg7 4.e3 d6 5.Nf3 O-O 6.d4
E25 1,008 Nimzo-Indian Defense: Saemisch Variation 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.a3 Bxc3+ 5.bxc3 c5 6.f3 d5 7.cxd5
B01 1,007 Scandinavian Defense: Modern Variation, Gipslis Variation 1.e4 d5 2.exd5 Nf6 3.d4 Nxd5 4.Nf3 Bg4
B73 1,007 Sicilian Defense: Dragon Variation, Classical Variation Battery Variation 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be2 Bg7 7.Be3 Nc6 8.O-O O-O 9.Qd2
C69 1,006 Ruy Lopez: Exchange Variation, Bronstein Variation 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6 dxc6 5.O-O Qd6
A49 994 Zukertort Opening: Grünfeld Reversed 1.Nf3 c5 2.g3 d5 3.Bg2 Nc6 4.d4 e6 5.O-O
D94 993 Gruenfeld Defense: Opocensky Variation 1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.e3 O-O 6.Bd2
D46 988 Semi-Slav Defense: Romih Variation 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 Bb4
C36 984 King's Gambit: Accepted, Abbazia Defense 1.e4 e5 2.f4 exf4 3.Nf3 d5 4.exd5 Nf6
B72 977 Sicilian Defense: Dragon Variation, Classical Variation 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be2 Bg7 7.Be3 Nc6 8.Nb3
B20 975 Sicilian Defense: Wing Gambit 1.e4 c5 2.b4
D20 975 Queen's Gambit Accepted: Central Variation, Modern Defense 1.d4 d5 2.c4 dxc4 3.e4 Nc6
E00 974 Kangaroo Defense: Keres Defense, Transpositional Variation 1.d4 e6 2.c4 Bb4+ 3.Nc3
D02 970 Queen's Gambit Refused: Baltic Defense, Pseudo-Slav 1.d4 d5 2.c4 Bf5 3.Nc3 e6 4.Nf3 c6
C05 968 French Defense: Tarrasch Variation, Botvinnik Variation 1.e4 e6 2.d4 d5 3.Nd2 Nf6 4.e5 Nfd7 5.Bd3 c5 6.c3 b6
A16 966 English Opening: Anglo-Indian Defense, Anglo-Grünfeld Variation 1.c4 Nf6 2.Nc3 d5 3.cxd5 Nxd5 4.Nf3
D56 963 Queen's Gambit Declined: Lasker Defense, Teichmann Variation 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 h6 7.Bh4 Ne4 8.Bxe7 Qxe7 9.Qc2
A78 962 Benoni Defense: Classical Variation, Czerniak Defense 1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.Nf3 Bg7 8.Be2 O-O 9.O-O Re8 10.Nd2 Na6
B08 954 Pirc Defense: Classical Variation, Quiet System Chigorin Line 1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Nf3 Bg7 5.Be2 O-O 6.O-O Nc6
A74 954 Benoni Defense: Classical Variation, Full line 1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.Nf3 Bg7 8.Be2 O-O 9.O-O a6 10.a4
A13 951 English Opening: Agincourt Defense, Catalan Defense 1.c4 e6 2.Nf3 d5 3.g3 c5
A12 951 Reti Opening: Anglo-Slav Variation, Bogoljubow Variation Stonewall Line 1.Nf3 d5 2.c4 c6 3.b3 Nf6 4.Bb2 e6 5.g3 Be7 6.Bg2 O-O 7.O-O
B07 948 Pirc Defense: Kholmov System 1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Bc4
A95 945 Dutch Defense: Classical Variation, Stonewall Variation 1.d4 f5 2.c4 Nf6 3.g3 e6 4.Bg2 Be7 5.Nf3 O-O 6.O-O d5 7.Nc3 c6
A18 939 English Opening: Anglo-Indian Defense, Flohr-Mikenas-Carls Variation 1.c4 Nf6 2.Nc3 e6 3.e4 d5 4.e5
E73 936 King's Indian Defense: Averbakh Variation, Flexible Defense 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Be2 O-O 6.Bg5 h6
C75 926 Ruy Lopez: Morphy Defense, Modern Steinitz Defense 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.c3 Bd7 6.d4 Nge7
E17 925 Queen's Indian Defense: Euwe Variation 1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Be7 6.O-O O-O 7.b3
D08 922 Queen's Gambit Refused: Albin Countergambit, Normal Line 1.d4 d5 2.c4 e5 3.dxe5 d4 4.Nf3
D28 921 Queen's Gambit Accepted: Classical Defense, Alekhine System Except Main Line 1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5 6.O-O a6 7.Qe2 b5
A50 918 Indian Game: Saemisch-Indian 1.d4 Nf6 2.c4 b6
D10 918 Slav Defense: Winawer Countergambit 1.d4 d5 2.c4 c6 3.Nc3 e5
A59 918 Benko Gambit 1.d4 Nf6 2.c4 c5 3.d5 b5 4.cxb5 a6 5.bxa6 Bxa6 6.Nc3 d6 7.e4 Bxf1 8.Kxf1 g6 9.g3
B17 915 Caro-Kann Defense: Karpov Variation, Modern Main Line 1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nd7 5.Ng5 Ngf6 6.Bd3 e6 7.N1f3 Bd6 8.Qe2 h6 9.Ne4 Nxe4 10.Qxe4
E16 912 Queen's Indian Defense: Yates Variation 1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Bb4+ 6.Bd2 a5
E40 912 Nimzo-Indian Defense: Normal Variation, Taimanov Variation 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 Nc6
A30 910 English Opening: Symmetrical, hedgehog, flexible formation 1.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O e6 6.Nc3 Be7 7.d4 cxd4 8.Qxd4 d6 9.Rd1 a6 10.b3 Nbd7
A75 909 Benoni Defense: Classical Variation, Argentine Counterattack 1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.Nf3 Bg7 8.Be2 O-O 9.O-O a6 10.a4 Bg4
C25 909 Vienna Game: Vienna Gambit 1.e4 e5 2.Nc3 Nc6 3.f4
A02 906 Bird Opening: From Gambit 1.f4 e5
C92 894 Ruy Lopez: Closed Variations, Keres Defense 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d6 9.h3 Nd7
A40 891 Polish Defense 1.d4 b5
E28 891 Nimzo-Indian Defense: Saemisch Variation 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.a3 Bxc3+ 5.bxc3 O-O 6.e3
D94 888 Gruenfeld Defense: Makogonov Variation 1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.e3 O-O 6.b4
C46 887 Four Knights Game: Gunsberg Variation 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.a3
A92 887 Dutch Defense: Classical Variation 1.d4 f5 2.c4 Nf6 3.g3 e6 4.Bg2 Be7 5.Nf3 O-O
E99 884 King's Indian Defense: Orthodox Variation, Classical System Benko Attack 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O Nc6 8.d5 Ne7 9.Ne1 Nd7 10.f3 f5 11.g4
E29 884 Nimzo-Indian Defense: Saemisch Variation 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.a3 Bxc3+ 5.bxc3 O-O 6.e3 c5 7.Bd3 Nc6
A04 883 Zukertort Opening: Quiet system 1.Nf3 Nf6 2.e3
E16 882 Queen's Indian Defense: Riumin Variation 1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Bb4+ 6.Bd2 Be7
B02 879 Alekhine Defense: Maroczy Variation 1.e4 Nf6 2.d3
E13 878 Queen's Indian Defense: Kasparov Variation 1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.Nc3 Bb7 5.Bg5 h6 6.Bh4 Bb4
A13 878 English Opening: Agincourt Defense, Kurajica Defense 1.c4 e6 2.Nf3 d5 3.g3 c6
B12 876 Caro-Kann Defense: Advance Variation, Tal Variation 1.e4 c6 2.d4 d5 3.e5 Bf5 4.h4
A52 871 Budapest Defense: Rubinstein Variation 1.d4 Nf6 2.c4 e5 3.dxe5 Ng4 4.Bf4
C00 870 French Defense: Horwitz Attack 1.e4 e6 2.b3
D50 852 Queen's Gambit Declined: Been-Koomen Variation 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 c5
D02 848 Queen's Gambit Refused: Baltic Defense 1.d4 d5 2.c4 Bf5
C82 846 Ruy Lopez: Open Variations, Italian Variation 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 Be6 9.c3 Bc5
C26 845 Bishop's Opening: Vienna Hybrid, Spielmann Attack 1.e4 e5 2.Bc4 Nf6 3.d3 Bc5 4.Nc3
C18 844 French Defense: Winawer Variation, Retreat Variation Armenian Line 1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.a3 Ba5 6.b4 cxd4
A12 843 Reti Opening: Anglo-Slav Variation, New York System 1.Nf3 d5 2.c4 c6 3.b3 Nf6 4.Bb2 Bf5
C47 842 Four Knights Game: Scotch Variation, Belgrade Gambit 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.d4 exd4 5.Nd5
C22 842 Center Game: Berger Variation 1.e4 e5 2.d4 exd4 3.Qxd4 Nc6 4.Qe3 Nf6
D04 841 Queen Pawn Game: Colle System, Anti-Colle 1.d4 d5 2.Nf3 Nf6 3.e3 Bf5
E94 838 King's Indian Defense: Orthodox Variation, Donner Defense 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O c6
A61 836 Benoni Defense: Uhlmann Variation 1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.Nf3 g6 7.Bg5
C78 834 Ruy Lopez: Closed Variations, Morphy Attack 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Nc3
C51 834 Italian Game: Evans Gambit, MacDonnell Defense Main Line 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 5.c3 Bc5 6.d4 exd4 7.O-O d6 8.cxd4 Bb6
C15 832 French Defense: Winawer Variation, Alekhine Gambit Kan Variation 1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.Nge2 dxe4 5.a3 Bxc3+ 6.Nxc3 Nc6
D83 825 Gruenfeld Defense: Brinckmann Attack, Grünfeld Gambit Capablanca Variation 1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Bf4 Bg7 5.e3 O-O 6.Rc1
C45 824 Scotch Game: Potter Variation 1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Bc5 5.Nb3
B43 822 Sicilian Defense: Kan Variation, Wing Attack Fianchetto Variation 1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Nc3 b5 6.g3
D17 816 Slav Defense: Czech Variation, Carlsbad Variation 1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.a4 Bf5 6.Ne5 Nbd7 7.Nxc4 Qc7 8.g3 e5
C93 816 Ruy Lopez: Closed Variations, Smyslov-Breyer-Zaitsev Hybrid 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d6 9.h3 Re8 10.d4 Bb7 11.Nbd2 Bf8 12.a3 h6
E45 812 Nimzo-Indian Defense: Normal Variation, Bronstein (Byrne) Variation 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 5.Nge2 Ba6
D70 812 Neo-Grünfeld Defense: Goglidze Attack 1.d4 Nf6 2.c4 g6 3.f3 d5
E05 810 Catalan Opening: Open Defense, Classical Line 1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 dxc4 5.Nf3 Be7
B90 806 Sicilian Defense: Najdorf Variation, English Attack Anti-English 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Be3 Ng4
C86 797 Ruy Lopez: Closed Variations, Worrall Attack Caslting line 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Qe2 b5 7.Bb3 O-O
C36 794 King's Gambit Accepted: Modern Defense 1.e4 e5 2.f4 exf4 3.Nf3 d5
C00 792 French Defense: Wing Gambit 1.e4 e6 2.Nf3 d5 3.e5 c5 4.b4
E72 789 King's Indian Defense: Normal Variation, Deferred Fianchetto 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.g3
A01 788 Nimzo-Larsen Attack: Indian Variation 1.b3 Nf6
C92 788 Ruy Lopez: Closed Variations, Zaitsev System 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d6 9.h3 Re8
D20 788 Queen's Gambit Accepted: Central Variation, Rubinstein Defense 1.d4 d5 2.c4 dxc4 3.e4 c5
B23 786 Sicilian Defense: Grand Prix Attack, Schofman Variation 1.e4 c5 2.Nc3 Nc6 3.f4 g6 4.Nf3 Bg7 5.Bc4 e6 6.f5
C83 786 Ruy Lopez: Open Variations, Classical Defense 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 Be6 9.c3 Be7
D06 784 Queen's Gambit Refused: Marshall Defense 1.d4 d5 2.c4 Nf6
E11 784 Bogo-Indian Defense: Exchange Variation 1.d4 Nf6 2.c4 e6 3.Nf3 Bb4+ 4.Bd2 Bxd2+
D35 784 Queen's Gambit Declined: Exchange Variation, Saemisch Variation 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.cxd5 exd5 5.Nf3 Nbd7 6.Bf4
E77 784 King's Indian Defense: Four Pawns Attack 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f4 O-O 6.Be2
D10 781 Slav Defense: Slav Gambit, Alekhine Attack 1.d4 d5 2.c4 c6 3.Nc3 dxc4 4.e4
A57 780 Benko Gambit: Accepted, Dlugy Variation 1.d4 Nf6 2.c4 c5 3.d5 b5 4.cxb5 a6 5.f3
A09 780 Reti Opening: Reti Gambit 1.Nf3 d5 2.c4 dxc4
D86 780 Gruenfeld Defense: Exchange Variation, Simagin's Improved Variation 1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Bc4 O-O 8.Ne2 Nc6
C92 780 Ruy Lopez: Closed Variations, Kholmov Variation 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d6 9.h3 Be6
B82 774 Sicilian Defense: Scheveningen Variation, Tal Variation 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.f4 Nc6 7.Be3 Be7 8.Qf3
B97 773 Sicilian Defense: Najdorf Variation, Poisoned Pawn Accepted 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6 7.f4 Qb6 8.Qd2 Qxb2 9.Rb1 Qa3
A46 773 Indian Game: Polish Variation 1.d4 Nf6 2.Nf3 b5
A07 772 King's Indian Attack: Pachman System 1.Nf3 d5 2.g3 g6 3.Bg2 Bg7 4.O-O e5 5.d3 Ne7
E66 769 King's Indian Defense: Fianchetto Variation, Yugoslav Variation Advance Line 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Nf3 d6 5.g3 O-O 6.Bg2 c5 7.O-O Nc6 8.d5
E90 768 King's Indian Defense: Zinnowitz Variation 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Bg5
E10 765 Indian Game: Dzindzi-Indian Defense 1.d4 Nf6 2.c4 e6 3.Nf3 a6
C41 764 Philidor Defense: Larsen Variation 1.e4 e5 2.Nf3 d6 3.d4 exd4 4.Nxd4 g6
E75 764 King's Indian,Averbakh, Main line 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Be2 O-O 6.Bg5 c5 7.d5 e6
C11 762 French Defense: Classical Variation, Burn Variation Main Line 1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 dxe4 5.Nxe4 Be7 6.Bxf6 Bxf6 7.Nf3 O-O
A52 758 Budapest Defense: Adler Variation 1.d4 Nf6 2.c4 e5 3.dxe5 Ng4 4.Nf3
B21 756 Sicilian Defense: Morphy Gambit 1.e4 c5 2.d4 cxd4 3.Nf3
B06 753 Pterodactyl Defense: Eastern, Benoni 1.e4 g6 2.d4 Bg7 3.Nc3 c5 4.d5
E78 753 King's Indian Defense: Four Pawns Attack, Fluid Attack 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f4 O-O 6.Be2 c5 7.Nf3
A76 751 Benoni Defense: Classical Variation, Czerniak Defense 1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.Nf3 Bg7 8.Be2 O-O 9.O-O Re8
B07 750 Pirc Defense: 150 Attack 1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Be3 c6 5.Qd2
C53 750 Italian Game: Classical Variation, Giuoco Pianissimo Main line 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Nf6 5.d3 a6 6.Bb3 Ba7 7.h3 O-O 8.O-O d6 9.Re1
C77 749 Ruy Lopez: Morphy Defense, Bayreuth Variation 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.Bxc6
D37 746 Queen's Gambit Declined: Harrwitz Attack, Orthodox Defense 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 Be7 5.Bf4 O-O 6.e3 c6
C70 744 Ruy Lopez: Morphy Defense, Cozio Defense 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nge7
E17 739 Queen's Indian Defense: Opocensky Variation 1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Be7 6.Nc3 Ne4 7.Bd2
B27 739 Sicilian Defense: Katalimov Variation 1.e4 c5 2.Nf3 b6
E36 731 Nimzo-Indian Defense: Classical Variation, Noa Variation 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 d5 5.a3
B25 730 Sicilian Defense: Closed Variation, Botvinnik Defense I 1.e4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.f4 e5
C48 726 Four Knights Game: Spanish Variation, Classical Variation 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bc5
C12 725 French Defense: MacCutcheon Variation, Lasker Variation 1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Bb4 5.e5 h6 6.Bd2 Bxc3 7.bxc3 Ne4 8.Qg4 g6
D12 724 Slav Defense: Exchange Variation, Schallopp Variation 1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.e3 Bf5 5.cxd5 cxd5 6.Nc3
A43 723 Benoni Defense: Franco-Sicilian Defense 1.d4 c5 2.d5 e6 3.e4
D17 717 Slav Defense: Czech Variation, Bled Attack 1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.a4 Bf5 6.Nh4
C00 714 French Defense: Horwitz Attack, Papa-Ticulat Gambit 1.e4 e6 2.b3 d5 3.Bb2
C56 713 Italian Game: Scotch Gambit, Anderssen Attack 1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d4 exd4 5.O-O Nxe4 6.Re1 d5 7.Bxd5 Qxd5 8.Nc3
C51 711 Italian Game: Evans Gambit, MacDonnell Defense 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 5.c3 Bc5
C30 710 King's Gambit Declined: Classical Variation 1.e4 e5 2.f4 Bc5
C33 710 King's Gambit Accepted: Bishop's Gambit 1.e4 e5 2.f4 exf4 3.Bc4
B07 706 Pirc Defense: 150 Attack, Sveshnikov-Jansa Attack 1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Be3 c6 5.h3
D75 702 Neo-Gruenfeld Defense: Delayed Exchange Variation 1.d4 Nf6 2.c4 g6 3.g3 d5 4.Bg2 Bg7 5.Nf3 O-O 6.cxd5 Nxd5 7.O-O c5 8.Nc3
B01 700 Scandinavian Defense: Portuguese Variation 1.e4 d5 2.exd5 Nf6 3.d4 Bg4
B42 698 Sicilian Defense: Kan Variation, Swiss Cheese Variation 1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Bd3 g6
A96 698 Dutch Defense: Classical Variation, Buenos Aires Variation 1.d4 f5 2.c4 Nf6 3.g3 e6 4.Bg2 Be7 5.Nf3 O-O 6.O-O d6 7.Nc3 a5
C53 696 Italian Game: Classical Variation, Closed Variation 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Qe7
D34 696 Tarrasch Defense: Classical Variation, Endgame Variation 1.d4 d5 2.c4 e6 3.Nc3 c5 4.cxd5 exd5 5.Nf3 Nc6 6.g3 Nf6 7.Bg2 Be7 8.O-O O-O 9.Bg5 Be6
C42 694 Russian Game: French Attack 1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.d3
A21 692 English Opening: King's English Variation, Troger Defense 1.c4 e5 2.Nc3 d6 3.g3 Be6 4.Bg2 Nc6
C34 686 King's Gambit: Accepted, Fischer Defense 1.e4 e5 2.f4 exf4 3.Nf3 d6
D59 685 Queen's Gambit Declined: Tartakower Defense, Makogonov Exchange Variation 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 h6 7.Bh4 b6 8.cxd5 Nxd5
B02 684 Alekhine Defense: Saemisch Attack 1.e4 Nf6 2.e5 Nd5 3.Nc3
C81 683 Ruy Lopez: Open Variations, Howell Attack 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 Be6 9.Qe2
D64 678 Queen's Gambit Declined: Orthodox Defense: Rubinstein attack (with Rc1) 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 Nbd7 7.Rc1 c6 8.Qc2
B07 676 Rat Defense: Harmonist 1.e4 d6 2.f4
E96 674 King's Indian Defense: Orthodox Variation, Positional Defense Main Line 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O Nbd7 8.Re1 c6 9.Bf1 a5
A04 672 Zukertort Opening: Lisitsyn Gambit 1.Nf3 f5 2.e4
C19 671 French Defense: Winawer Variation, Advance Variation 1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.a3 Bxc3+ 6.bxc3 Ne7 7.a4
D78 669 Neo-Gruenfeld Defense: Classical Variation, Polgar Variation 1.d4 Nf6 2.c4 g6 3.g3 d5 4.Bg2 Bg7 5.Nf3 O-O 6.O-O Nc6
B01 666 Scandinavian Defense: Icelandic-Palme Gambit 1.e4 d5 2.exd5 Nf6 3.c4 e6
D48 666 Semi-Slav Defense: Meran Variation, Reynolds' Variation 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Bd3 a6 9.e4 c5 10.d5
C15 664 French Defense: Winawer Variation, Fingerslip Variation 1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.Bd2
A05 662 King's Indian Attack: Smyslov Variation 1.Nf3 Nf6 2.g3 g6 3.b4
D48 659 Semi-Slav Defense: Meran Variation, Old Variation 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Bd3 a6 9.e4 c5 10.e5
E73 658 King's Indian Defense: Semi-Averbakh System 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Be2 O-O 6.Be3
B29 650 Sicilian Defense: Nimzowitsch Variation, Main Line 1.e4 c5 2.Nf3 Nf6 3.e5 Nd5 4.Nc3 e6 5.Nxd5 exd5 6.d4 Nc6
C42 646 Russian Game: Kaufmann Attack 1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.c4
B02 644 Alekhine Defense: Two Pawn Attack, Lasker Variation 1.e4 Nf6 2.e5 Nd5 3.c4 Nb6 4.c5
A20 644 English Opening: King's English Variation, Nimzowitsch Variation 1.c4 e5 2.Nf3
D29 643 Queen's Gambit Accepted: Classical Defense, Alekhine System Main Line 1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5 6.O-O a6 7.Qe2 b5 8.Bb3 Bb7
D33 642 Tarrasch Defense: Swedish Variation 1.d4 d5 2.c4 e6 3.Nc3 c5 4.cxd5 exd5 5.Nf3 Nc6 6.g3 c4
A93 638 Dutch Defense: Classical Variation, Stonewall Variation Botvinnik Variation 1.d4 f5 2.c4 Nf6 3.g3 e6 4.Bg2 Be7 5.Nf3 O-O 6.O-O d5 7.b3
E72 636 King's Indian Defense: Pomar System 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.g3 O-O 6.Bg2 e5 7.Nge2
E25 627 Nimzo-Indian Defense: Saemisch Variation, Keres Variation 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.a3 Bxc3+ 5.bxc3 c5 6.f3 d5 7.cxd5 Nxd5 8.dxc5
C69 622 Ruy Lopez: Exchange Variation, Alapin Gambit 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6 dxc6 5.O-O Bg4 6.h3 h5
A04 622 Zukertort Opening: Queenside Fianchetto Variation 1.Nf3 b6
A99 616 Dutch Defense: Classical Variation, Ilyin-Zhenevsky Variation Modern Main Line 1.d4 f5 2.c4 Nf6 3.g3 e6 4.Bg2 Be7 5.Nf3 O-O 6.O-O d6 7.Nc3 Qe8 8.b3
C73 615 Ruy Lopez: Morphy Defense, Modern Steinitz Defense 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.Bxc6+ bxc6 6.d4 f6
A45 614 Indian Game: Reversed Chigorin Defense 1.d4 Nf6 2.Nc3 c5
D81 614 Gruenfeld Defense: Russian Variation, Accelerated Variation 1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Qb3
D97 612 Gruenfeld Defense: Russian Variation, Byrne (Simagin) Variation 1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Qb3 dxc4 6.Qxc4 O-O 7.e4 Nc6
A15 612 English Opening: Anglo-Indian Defense, Slav Formation 1.c4 Nf6 2.Nf3 g6 3.g3 c6
D51 600 Queen's Gambit Declined: Westphalian Variation 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Nbd7 5.e3 Bb4 6.Nf3 c5
E20 598 Nimzo-Indian Defense: Romanishin Variation 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Nf3 c5 5.g3 O-O 6.Bg2
C42 597 Russian Game: Classical Attack, Chigorin Variation 1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.d4 d5 6.Bd3 Be7 7.O-O Nc6 8.Re1
A12 596 Reti Opening: Anglo-Slav Variation, London Defensive System 1.Nf3 d5 2.c4 c6 3.b3 Nf6 4.g3 Bf5
B98 594 Sicilian Defense: Najdorf Variation, Browne Variation 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6 7.f4 Be7 8.Qf3 h6 9.Bh4 Qc7
D23 590 Queen's Gambit Accepted: Mannheim Variation 1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.Qa4+
A12 590 Reti Opening: Anglo-Slav Variation, Torre System 1.Nf3 d5 2.c4 c6 3.b3 Nf6 4.g3 Bg4
A69 588 Benoni Defense: Four Pawns Attack, Main Line 1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.f4 Bg7 8.Nf3 O-O 9.Be2 Re8
E53 588 Nimzo-Indian Defense: Normal Variation, Gligoric System 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 d5 6.Bd3 c5 7.O-O Nbd7
A45 585 Trompowsky Attack: Edge Variation 1.d4 Nf6 2.Bg5 Ne4 3.Bh4
D52 584 Queen's Gambit Declined: Cambridge Springs Defense: 7.cd 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Nbd7 5.e3 c6 6.Nf3 Qa5 7.cxd5
C70 582 Ruy Lopez: Morphy Defense, Caro Variation 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 b5
A41 582 Modern Defense: Rossolimo Variation 1.e4 g6 2.d4 Bg7 3.Nf3 d6 4.c4 Bg4
D30 579 Queen's Gambit Declined: Hastings Variation 1.d4 d5 2.c4 e6 3.Nf3 Nf6 4.Bg5 h6 5.Bxf6 Qxf6 6.Nc3 c6 7.Qb3
C21 578 Danish Gambit 1.e4 e5 2.d4 exd4 3.c3
B06 576 Modern Defense: Gurgenidze Defense 1.e4 g6 2.d4 Bg7 3.Nc3 c6 4.f4 d5 5.e5 h5
B13 576 Caro-Kann Defense: Panov Attack, Modern Defense Carlsbad Line 1.e4 c6 2.d4 d5 3.exd5 cxd5 4.c4 Nf6 5.Nc3 Nc6 6.Bg5 e6
D49 575 Semi-Slav Defense: Meran Variation, Blumenfeld Variation 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Bd3 a6 9.e4 c5 10.e5 cxd4 11.Nxb5
D54 574 Queen's Gambit Declined: Neo-Orthodox Variation 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Rc1
C30 570 King's Gambit: Declined, Classical Variation 1.e4 e5 2.f4 Bc5 3.Nf3 d6 4.c3
C58 570 Italian Game: Two Knights Defense 1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 d5 5.exd5 Na5 6.Bb5+ c6 7.dxc6 bxc6 8.Be2
A00 568 Van't Kruijs Opening 1000
B07 568 Lion Defense: Anti-Philidor, Lion's Cave 1.e4 d6 2.d4 Nf6 3.Nc3 Nbd7 4.f4 e5
B72 567 Sicilian Defense: Dragon, Classical, Amsterdam Variation 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.Be2 Nc6 8.Qd2
D72 563 Neo-Gruenfeld Defense: Exchange Variation with 6,e4 1.d4 Nf6 2.c4 g6 3.g3 d5 4.Bg2 Bg7 5.cxd5 Nxd5 6.e4 Nb6 7.Ne2
C59 561 Italian Game: Two Knights Defense, Polerio Defense Suhle Defense 1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 d5 5.exd5 Na5 6.Bb5+ c6 7.dxc6 bxc6 8.Be2 h6
B00 560 Nimzowitsch Defense: Scandinavian Variation, Advance Variation 1.e4 Nc6 2.d4 d5 3.e5
B12 558 Caro-Kann Defense: Advance Variation, Van der Wiel Attack Dreyev Defense 1.e4 c6 2.d4 d5 3.e5 Bf5 4.Nc3 Qb6
A46 556 Indian Game: Czech-Indian 1.d4 Nf6 2.Nf3 c6
C63 553 Ruy Lopez: Schliemann Defense, Tartakower Variation 1.e4 e5 2.Nf3 Nc6 3.Bb5 f5 4.Nc3 fxe4 5.Nxe4 Nf6
D32 552 Tarrasch Defense: Schara Gambit 1.d4 d5 2.c4 e6 3.Nc3 c5 4.cxd5 cxd4
C35 552 King's Gambit: Accepted, Cunningham Defense 1.e4 e5 2.f4 exf4 3.Nf3 Be7
C71 546 Ruy Lopez: Morphy Defense, Modern Steinitz Defense 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.c4
D47 539 Semi-Slav Defense: Meran Variation, Wade Variation Larsen Variation 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Bd3 Bb7 9.e4 b4 10.Na4 c5 11.e5 Nd5
C12 538 French Defense: MacCutcheon Variation, Exchange Variation 1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Bb4 5.exd5
D68 538 Queen's Gambit Declined: Orthodox Defense, Classical Variation 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 Nbd7 7.Rc1 c6 8.Bd3 dxc4 9.Bxc4 Nd5 10.Bxe7 Qxe7 11.O-O Nxc3 12.Rxc3 e5
B62 537 Sicilian Defense: Richter-Rauzer Variation, Vitolins Variation 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 7.Bb5
A00 536 Mieses Opening 1.d3
B21 536 Sicilian Defense: Smith-Morra Gambit, Declined Push Variation 1.e4 c5 2.d4 cxd4 3.c3 d3
B21 534 Sicilian Defense: Smith-Morra Gambit, Accepted Paulsen Formation 1.e4 c5 2.d4 cxd4 3.c3 dxc3 4.Nxc3 Nc6 5.Nf3 e6 6.Bc4 a6
D16 534 Queen's Gambit Declined: Slav,Smyslov Variation 1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.a4 Na6 6.e4 Bg4
E79 534 King's Indian Defense: Four Pawns Attack, Exchange Variation 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f4 O-O 6.Be2 c5 7.Nf3 cxd4 8.Nxd4 Nc6 9.Be3
D70 532 Neo-Grünfeld Defense: Non- or Delayed Fianchetto 1.d4 Nf6 2.c4 g6 3.Nf3 d5
D37 528 Queen's Gambit Declined: Harrwitz Attack, Main Line Old Main Line 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 Be7 5.Bf4 O-O 6.e3 c5 7.dxc5 Bxc5 8.Qc2 Nc6 9.a3 Qa5 10.Rd1
A12 522 Reti Opening: Anglo-Slav Variation, Capablanca Variation 1.Nf3 d5 2.c4 c6 3.b3 Nf6 4.Bb2 Bg4
C41 520 Philidor Defense: Hanham Variation, Krause Variation 1.e4 e5 2.Nf3 d6 3.d4 Nd7 4.Bc4 c6 5.O-O
B96 518 Sicilian Defense: Najdorf Variation, Polugayevsky Variation 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6 7.f4 b5
D15 515 Slav Defense: Geller Gambit 1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.e4 b5 6.e5
C24 514 Bishop's Opening: Ponziani Gambit 1.e4 e5 2.Bc4 Nf6 3.d4
C41 514 Philidor Defense: Nimzowitsch Variation 1.e4 e5 2.Nf3 d6 3.d4 Nf6 4.dxe5
B25 513 Sicilian Defense: Closed Variation, Botvinnik Defense II 1.e4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.Nge2 e5
D06 513 Queen's Gambit Refused: Chigorin Defense, Lazard Gambit 1.d4 d5 2.c4 Nc6 3.Nf3 e5
C51 513 Italian Game: Evans Gambit, Declined 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bb6
D44 510 Semi-Slav Defense: Botvinnik System, Lilienthal Variation 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.Bg5 dxc4 6.e4 b5 7.e5 h6 8.Bh4 g5 9.Nxg5 hxg5 10.Bxg5 Nbd7 11.g3
E17 510 Queen's Indian Defense: Classical Variation, Tiviakov Defense 1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Be7 6.O-O O-O 7.Nc3 Na6
B80 509 Sicilian Defense: Scheveningen Variation, English Attack 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Be3 a6 7.Qd2
A43 508 Benoni Defense: Old Benoni Defense, Clarendon Court Variation 1.d4 c5 2.d5 f5
C25 507 Vienna Game: Vienna Gambit, Steinitz Gambit Knight Variation 1.e4 e5 2.Nc3 Nc6 3.f4 exf4 4.Nf3
E39 506 Nimzo-Indian Defense: Classical Variation, Berlin Variation Macieja System 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 c5 5.dxc5 O-O 6.a3 Bxc5 7.Nf3 b6 8.Bf4
C48 502 Four Knights Game: Spanish Variation, Rubinstein Variation Accepted 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Nd4 5.Nxd4
B12 500 Caro-Kann Defense: Advance Variation, Bronstein Variation 1.e4 c6 2.d4 d5 3.e5 Bf5 4.Ne2
A40 498 Queen Pawn Game: Queen Fianchetto 1.d4 b6
C40 498 Elephant Gambit 1.e4 e5 2.Nf3 d5
A13 498 English Opening: Anglo-Indian Defense, Romanishin Gambit 1.c4 Nf6 2.Nf3 e6 3.g3 a6 4.Bg2 b5
C41 496 Philidor Defense: Hanham Variation, Schlechter Variation 1.e4 e5 2.Nf3 d6 3.d4 Nd7 4.Bc4 c6 5.Nc3
B40 495 Sicilian Defense: Smith-Morra Gambit Deferred 1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.c3
A19 494 English Opening: Anglo-Indian Defense, Flohr-Mikenas-Carls Variation Nei Gambit 1.c4 Nf6 2.Nc3 e6 3.e4 c5 4.e5 Ng8
D38 489 Queen's Gambit Declined: Ragozin Defense, Alekhine Variation 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 Bb4 5.Qa4
B88 489 Sicilian Defense: Sozin, Fischer Variation 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Bc4 Nc6 7.Bb3 Be7 8.Be3 O-O 9.f4
B17 488 Caro-Kann Defense: Karpov Variation, Smyslov Variation Main Line 1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nd7 5.Bc4 Ngf6 6.Ng5 e6 7.Qe2 Nb6 8.Bb3
C54 488 Italian Game: Giuoco Piano, Greco's attack 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Nf6 5.d4 exd4 6.cxd4 Bb4+ 7.Nc3
D27 488 Queen's Gambit Accepted: Furman Variation 1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5 6.O-O a6 7.dxc5 Bxc5
D16 487 Slav Defense: Smyslov Variation 1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.a4 Na6
A16 486 English Opening: Anglo-Indian Defense, Anglo-Grünfeld Variation 1.c4 Nf6 2.Nc3 d5 3.cxd5 Nxd5 4.g3 g6 5.Bg2 Nxc3
D00 486 Queen Pawn Game: Steinitz Countergambit 1.d4 d5 2.Bf4 c5
D47 484 Semi-Slav Defense: Meran Variation, Lundin Variation 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Bd3 b4
B29 484 Sicilian Defense: Nimzowitsch Variation, Exchange Variation 1.e4 c5 2.Nf3 Nf6 3.e5 Nd5 4.Nc3 Nxc3
B06 483 Pterodactyl Defense: Sicilian, Rhamporhynchus 1.e4 g6 2.d4 Bg7 3.Nc3 c5 4.Nf3 Qa5 5.dxc5
A06 482 Zukertort Opening: Old Indian Attack 1.Nf3 d5 2.d3
B06 481 Pterodactyl Defense: Western, Rhamporhynchus 1.e4 g6 2.d4 Bg7 3.Nf3 c5 4.dxc5 Qa5+
C33 480 King's Gambit: Accepted, Bishop's Gambit Bogoljubow Variation 1.e4 e5 2.f4 exf4 3.Bc4 Nf6 4.Nc3
A51 479 Budapest Defense: Fajarowicz Variation 1.d4 Nf6 2.c4 e5 3.dxe5 Ne4
D57 474 Queen's Gambit Declined: Lasker Defense, Main Line 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 h6 7.Bh4 Ne4 8.Bxe7 Qxe7 9.cxd5 Nxc3 10.bxc3
E22 472 Nimzo-Indian Defense: Spielmann Variation 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qb3
C15 470 French Defense: Winawer Variation, Alekhine Gambit Accepted 1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.Ne2 dxe4 5.a3 Bxc3+
C15 470 French Defense: Winawer Variation, Alekhine Gambit Accepted 1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.Nge2 dxe4 5.a3 Bxc3+
C24 470 Bishop's Opening: Urusov Gambit 1.e4 e5 2.Bc4 Nf6 3.d4 exd4 4.Nf3
A48 469 Torre Attack: Fianchetto Defense, Euwe Variation 1.d4 Nf6 2.Nf3 g6 3.Bg5 Bg7 4.Nbd2 c5
C00 467 French Defense: Schlechter Variation 1.e4 e6 2.d4 d5 3.Bd3
E81 465 King's Indian Defense: Saemisch Variation, Byrne Defense 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Be3 c6 7.Bd3 a6
C33 462 King's Gambit: Accepted, Bishop's Gambit Bogoljubow Defense 1.e4 e5 2.f4 exf4 3.Bc4 Nf6 4.Nc3 c6
E04 461 Catalan Opening: Open Defense, Modern Sharp Variation 1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 dxc4 5.Nf3 Nc6 6.Qa4 Bb4+
C53 460 Italian Game: Bird's Attack 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Nf6 5.b4
B01 457 Scandinavian Defense: Lasker Variation 1.e4 d5 2.exd5 Qxd5 3.Nc3 Qa5 4.d4 Nf6 5.Nf3 Bg4 6.h3
A53 456 Old Indian Defense: Janowski Variation, Fianchetto Variation 1.d4 Nf6 2.c4 d6 3.Nc3 Bf5 4.Nf3
D52 454 Queen's Gambit Declined: Cambridge Springs Defense: Yugoslav Variation 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Nbd7 5.e3 c6 6.Nf3 Qa5 7.cxd5 Nxd5
A24 453 English Opening: King's English Variation, Two Knights' Variation Fianchetto Lines 1.c4 e5 2.Nc3 Nf6 3.g3 g6
B56 453 Sicilian Defense: Venice Attack 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e5 6.Bb5+
B12 452 Caro-Kann Defense: Goldman Variation 1.e4 c6 2.Nc3 d5 3.Qf3
C63 452 Ruy Lopez: Schliemann Defense, Schönemann Attack 1.e4 e5 2.Nf3 Nc6 3.Bb5 f5 4.d4
C44 450 King Pawn Game: Tayler Opening, Inverted Hanham 1.e4 e5 2.Nf3 Nc6 3.Be2 Nf6 4.d3 d5 5.Nbd2
D97 450 Gruenfeld Defense: Russian Variation, Szabo (Boleslavsky) 1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Qb3 dxc4 6.Qxc4 O-O 7.e4 c6
C74 448 Ruy Lopez: Morphy Defense, Modern Steinitz Defense 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.c3 f5 6.exf5 Bxf5 7.O-O
D06 447 Queen's Gambit Refused: Austrian Defense 1.d4 d5 2.c4 c5
C42 442 Russian Game: Urusov Gambit 1.e4 e5 2.Nf3 Nf6 3.Bc4
C96 442 Ruy Lopez: Closed Variations, Borisenko Variation 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d6 9.h3 Na5 10.Bc2 c5 11.d4 Nc6
B42 442 Sicilian Defense: Kan, Gipslis Variation 1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Bd3 Nf6 6.O-O d6 7.c4 g6
D89 441 Gruenfeld Defense: Exchange Variation, Spassky Variation 1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Bc4 O-O 8.Ne2 c5 9.O-O Nc6 10.Be3 cxd4 11.cxd4 Bg4 12.f3 Na5 13.Bd3 Be6
A80 441 Dutch Defense: Blackmar's Second Gambit 1.d4 f5 2.e4 fxe4 3.Nc3 Nf6 4.f3
E17 441 Queen's Indian Defense: Fianchetto Variation, Kramnik Variation 1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Be7 6.O-O O-O 7.Re1
C28 438 Bishop's Opening: Vienna Hybrid, Hromadka Variation 1.e4 e5 2.Bc4 Nf6 3.d3 Nc6 4.Nc3 Bb4 5.Ne2
C45 438 Scotch Game: Malaniuk Variation 1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Bb4+
D69 438 Queen's Gambit Declined: Orthodox Defense, Classical Variation 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 Nbd7 7.Rc1 c6 8.Bd3 dxc4 9.Bxc4 Nd5 10.Bxe7 Qxe7 11.O-O Nxc3 12.Rxc3 e5 13.dxe5 Nxe5 14.Nxe5 Qxe5
B51 436 Sicilian Defense: Canal Attack, Haag Gambit 1.e4 c5 2.Nf3 d6 3.Bb5+ Bd7 4.Bxd7+ Qxd7 5.O-O Nc6 6.c3 Nf6 7.d4
C43 430 Russian Game: Modern Attack, Center Attack 1.e4 e5 2.Nf3 Nf6 3.d4 exd4 4.e5 Ne4 5.Qxd4
A63 428 Benoni Defense: Fianchetto Variation, Hastings Defense 1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.Nf3 g6 7.g3 Bg7 8.Bg2 O-O 9.O-O Nbd7
A12 428 Reti Opening: Anglo-Slav Variation, Bled Variation 1.Nf3 d5 2.c4 c6 3.b3 Nf6 4.Bb2 g6
C31 426 King's Gambit: Falkbeer Countergambit, Nimzowitsch-Marshall Countergambit 1.e4 e5 2.f4 d5 3.exd5 c6
C55 426 Italian Game: Deutz Gambit 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.O-O Nf6 5.d4
D95 424 Gruenfeld Defense: Botvinnik Variation 1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.e3 O-O 6.Qb3 e6
B03 422 Alekhine Defense: Four Pawns Attack, Trifunovic Variation 1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.c4 Nb6 5.f4 Bf5
C11 420 French Defense: Classical Variation, Swiss Variation 1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bd3
A92 420 Dutch Defense: Alekhine Variation 1.d4 f5 2.c4 Nf6 3.g3 e6 4.Bg2 Be7 5.Nf3 O-O 6.O-O Ne4
D89 419 Gruenfeld Defense: Exchange Variation, Sokolsky Variation 1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Bc4 O-O 8.Ne2 c5 9.O-O Nc6 10.Be3 cxd4 11.cxd4 Bg4 12.f3 Na5 13.Bd3 Be6 14.d5
B77 418 Sicilian Defense: Dragon Variation, Yugoslav Attack Sosonko Variation 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.f3 O-O 8.Qd2 Nc6 9.Bc4 Nd7
D17 417 Slav Defense: Czech Variation, Wiesbaden Variation Sharp line 1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.a4 Bf5 6.Ne5 e6 7.f3 Bb4 8.e4
E15 417 Queen's Indian Defense: Fianchetto Variation, Nimzowitsch Variation Timman's Line 1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Ba6 5.Qb3
E37 417 Nimzo-Indian Defense: Classical Variation, Noa Variation 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 d5 5.a3 Bxc3+ 6.Qxc3 Ne4 7.Qc2
E20 415 Nimzo-Indian Defense: Romanishin Variation, English Hybrid 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Nf3 c5 5.g3 O-O 6.Bg2 cxd4 7.Nxd4 d5 8.cxd5 Nxd5
B09 414 Pirc Defense: Austrian Attack, Unzicker Attack 1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.f4 Bg7 5.Nf3 O-O 6.e5
E00 414 Indian Game: Seirawan Attack 1.d4 Nf6 2.c4 e6 3.Bg5
C44 410 Scotch Game: Göring Gambit, Double Pawn Sacrifice 1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.c3 dxc3 5.Bc4
E83 410 King's Indian,Saemisch, Ruban Variation 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Be3 Nc6 7.Nge2 Rb8
A90 409 Dutch Defense: Nimzo-Dutch Variation 1.d4 f5 2.c4 Nf6 3.g3 e6 4.Bg2 Bb4+
B15 407 Caro-Kann Defense: Forgacs Variation 1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nf6 5.Nxf6+ exf6 6.Bc4
D01 406 Queen Pawn Game: Veresov Attack, Two Knights System Gruenfeld Defense 1.d4 d5 2.Nc3 Nf6 3.Bg5 Nbd7 4.Nf3 g6
A45 402 Trompowsky Attack: Raptor Variation 1.d4 Nf6 2.Bg5 Ne4 3.h4
C42 400 Russian Game: Millenium Attack 1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.Bd3
C25 399 Vienna Game: Anderssen Defense 1.e4 e5 2.Nc3 Bc5
B32 399 Sicilian Defense: Nimzo-American Variation 1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 d5
A10 398 English Opening: Anglo-Lithuanian Variation 1.c4 Nc6
D50 398 Queen's Gambit Declined: Pseudo-Tarrasch Variation 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 c5 5.cxd5
D30 397 Queen's Gambit Declined: Capablanca 1.d4 d5 2.c4 e6 3.Nf3 Nf6 4.Bg5 h6
C78 396 Ruy Lopez: Morphy Defense 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O b5 6.Bb3 d6
B01 396 Scandinavian Defense: Schiller-Pytel Variation 1.e4 d5 2.exd5 Qxd5 3.Nc3 Qd6 4.d4 c6
B00 395 Nimzowitsch Defense: Scandinavian Variation, Bogoljubow Variation Vehre Variation 1.e4 Nc6 2.d4 d5 3.Nc3 Nf6
C68 394 Ruy Lopez: Exchange, Alekhine Variation 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6 dxc6 5.d4 exd4 6.Qxd4 Qxd4 7.Nxd4 Bd7
C12 394 French Defense: MacCutcheon Variation, Wolf Gambit 1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Bb4 5.Nge2
A15 394 English Opening: Anglo-Indian Defense, Scandinavian Defense 1.c4 Nf6 2.Nf3 d5
B40 393 Sicilian Defense: Wing Gambit Deferred 1.e4 c5 2.Nf3 e6 3.b4
A60 390 Benoni Defense: Modern Variation, Snake Variation 1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 Bd6
B00 390 Nimzowitsch Defense: Mikenas Variation 1.e4 Nc6 2.d4 d6
A45 390 Trompowsky Attack: Poisoned Pawn Variation 1.d4 Nf6 2.Bg5 c5 3.d5 Qb6 4.Nc3
C44 388 King Pawn Game: Tayler Opening 1.e4 e5 2.Nf3 Nc6 3.Be2
C77 387 Ruy Lopez: Morphy Defense, Duras Variation 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.d3 d6 6.c4
A12 386 Reti Opening: Anglo-Slav Variation, Bogoljubow Variation II 1.Nf3 d5 2.c4 c6 3.b3 Bg4
C70 384 Ruy Lopez: Morphy Defense, Norwegian Variation 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 b5 5.Bb3 Na5
E21 384 Nimzo-Indian Defense: Three Knights Variation, Duchamp Variation Modern Line 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Nf3 b6 5.Bg5 Bb7 6.Nd2
B06 382 Modern Defense: Bishop Attack 1.e4 g6 2.d4 Bg7 3.Bc4
C49 382 Four Knights Game: Spanish Variation 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bb4 5.O-O O-O 6.d3 Bxc3
B00 381 St. George Defense: Polish Variation 1.e4 a6 2.d4 b5 3.Nf3 Bb7 4.Bd3 e6
C02 381 French Defense: Advance Variation, Ruisdonk Gambit 1.e4 e6 2.d4 d5 3.e5 c5 4.Nf3 cxd4 5.Bd3
A00 379 Hungarian Opening: Dutch Defense 1.g3 f5
B60 379 Sicilian Defense: Richter-Rauzer Variation, Dragon Variation 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 g6
B28 378 Sicilian Defense: O'Kelly Variation, Maroczy Bind Robatsch Line 1.e4 c5 2.Nf3 a6 3.c4 d6
B40 377 Sicilian Defense: Pin Variation, Koch Variation 1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Bb4 6.e5
B63 377 Sicilian Defense: Richter-Rauzer Variation, Ivanov Variation 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 7.Qd2 Qb6
C74 376 Ruy Lopez: Morphy Defense, Modern Steinitz Defense Siesta Variation 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.c3 f5
C60 375 Ruy Lopez: Alapin Defense 1.e4 e5 2.Nf3 Nc6 3.Bb5 Bb4
B25 374 Sicilian Defense: Closed Variation, Botvinnik Defense I Edge Variation 1.e4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.f4 e5 7.Nh3 Nge7
A00 372 Anderssen Opening 1.a3
A98 372 Dutch Defense: Classical Variation, Ilyin-Zhenevsky Variation Alatortsev-Lisitsyn Line 1.d4 f5 2.c4 Nf6 3.g3 e6 4.Bg2 Be7 5.Nf3 O-O 6.O-O d6 7.Nc3 Qe8 8.Qc2
A03 369 Bird Opening: Lasker Variation 1.f4 d5 2.Nf3 Nf6 3.e3 c5
E53 369 Nimzo-Indian Defense: Normal Variation, Gligoric System Keres Variation 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 d5 6.Bd3 c5 7.O-O b6
B00 368 Nimzowitsch Defense: Kennedy Variation, Linksspringer Variation 1.e4 Nc6 2.d4 e5 3.d5
B03 367 Alekhine Defense: Balogh Variation 1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.Bc4
A57 366 Benko Gambit: Declined, Quiet Line 1.d4 Nf6 2.c4 c5 3.d5 b5 4.Nd2
C95 366 Ruy Lopez: Closed Variations, Breyer Defense 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d6 9.h3 Nb8 10.d4 Nbd7 11.Nbd2 Bb7 12.Bc2 c5
C13 364 French Defense: Alekhine-Chatard Attack, Maroczy Variation 1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Be7 5.e5 Nfd7 6.h4 a6
D57 362 Queen's Gambit Declined: Tartakower Variation, Exchange Variation 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 h6 7.Bh4 b6 8.cxd5 exd5
D31 361 Queen's Gambit Declined: Janowski Variation 1.d4 d5 2.c4 e6 3.Nc3 a6
B66 357 Sicilian Defense: Richter-Rauzer Variation, Classical Variation Kantscher Line 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 7.Qd2 Be7 8.O-O-O Nxd4 9.Qxd4 a6 10.f4 b5
C55 356 Italian Game: Scotch Gambit, Janowski Defense 1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d4 exd4 5.O-O d6
E26 356 Nimzo-Indian Defense: Saemisch Variation, O'Kelly Variation 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.a3 Bxc3+ 5.bxc3 c5 6.e3 b6
C00 354 French Defense: La Bourdonnais Variation 1.e4 e6 2.f4
A57 351 Benko Gambit: Declined, Sosonko Variation 1.d4 Nf6 2.c4 c5 3.d5 b5 4.a4
C92 351 Ruy Lopez: Closed Variations, Keres Defense 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d6 9.h3 a5
B74 350 Sicilian Defense: Dragon Variation, Classical Variation Tartakower Line 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be2 Bg7 7.Be3 Nc6 8.O-O O-O 9.Nb3 Be6 10.f4 Qc8
E02 350 Catalan Opening: Open Defense 1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 dxc4 5.Qa4+
C64 349 Ruy Lopez: Classical Variation, Modern Main Line 1.e4 e5 2.Nf3 Nc6 3.Bb5 Bc5 4.O-O Nf6 5.c3 O-O 6.d4 Bb6 7.Bg5
D34 349 Tarrasch Defense: Classical Variation, Reti Variation 1.d4 d5 2.c4 e6 3.Nc3 c5 4.cxd5 exd5 5.Nf3 Nc6 6.g3 Nf6 7.Bg2 Be7 8.O-O O-O 9.dxc5 Bxc5 10.Na4
A48 348 Queen Pawn Game: Colle System, Gruenfeld Formation 1.d4 Nf6 2.Nf3 g6 3.e3 Bg7 4.Bd3 d5
C53 348 Italian Game: Classical Variation, Center Holding Variation 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Qe7 5.d4 Bb6
C44 344 Scotch Game: Benima Defense 1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Bc4 Be7
C34 344 King's Gambit: Accepted, Schallop Defense 1.e4 e5 2.f4 exf4 3.Nf3 Nf6
C31 344 King's Gambit: Falkbeer Countergambit, Staunton Line 1.e4 e5 2.f4 d5 3.exd5 e4
D63 342 Queen's Gambit Declined: Orthodox Defense: Swiss, Karlsbad Variation 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 Nbd7 7.Rc1 a6 8.cxd5
B20 340 Sicilian Defense: Mengarini Variation 1.e4 c5 2.a3
B06 339 Modern Defense: Lizard Defense, Mittenberger Gambit 1.e4 g6 2.d4 Bg7 3.Nc3 d5
D00 338 Queen Pawn Game: Stonewall Attack 1.d4 d5 2.e3 Nf6 3.Bd3
B20 338 Sicilian Defense: Snyder Variation, Queen Fianchetto Variation 1.e4 c5 2.b3 b6
A40 337 Modern Defense: Beefeater Variation 1.d4 g6 2.c4 Bg7 3.Nc3 c5 4.d5 Bxc3+ 5.bxc3 f5
B21 336 Sicilian Defense: Smith-Morra Gambit, Accepted Classical Formation 1.e4 c5 2.d4 cxd4 3.c3 dxc3 4.Nxc3 Nc6 5.Nf3 d6 6.Bc4 a6 7.O-O Nf6
B00 336 Nimzowitsch Defense: Scandinavian Variation, Exchange Variation 1.e4 Nc6 2.d4 d5 3.exd5 Qxd5
A57 334 Benko Gambit: Zaitsev Variation, Nescafe Frappe Attack 1.d4 Nf6 2.c4 c5 3.d5 b5 4.cxb5 a6 5.Nc3 axb5 6.e4 b4 7.Nb5
A00 334 Polish Opening: Schiffler-Sokolsky Variation 1.b4 Nf6 2.Bb2 d5 3.e3 e6 4.b5
B69 334 Sicilian Defense: Richter-Rauzer Variation, Neo-Modern Variation Nyezhmetdinov Attack 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 7.Qd2 a6 8.O-O-O Bd7 9.f4 Be7 10.Nf3 b5 11.Bxf6
A00 334 Hungarian Opening: Reversed Modern Defense 1.g3 d5 2.Bg2 c5
A01 333 Nimzo-Larsen Attack: English Variation 1.b3 c5
C27 333 Bishop's Opening: Boden-Kieseritsky Gambit 1.e4 e5 2.Nc3 Nf6 3.Bc4 Nxe4 4.Nf3
A15 332 English Opening: Anglo-Indian Defense, King's Indian Formation Double Fianchetto 1.c4 Nf6 2.Nf3 g6 3.g3 b6 4.Bg2 Bb7
D05 330 Rubinstein Opening: Bogoljubow Defense 1.d4 d5 2.Nf3 Nf6 3.e3 e6 4.Bd3 c5 5.b3 Nc6 6.Bb2 Bd6 7.O-O O-O
E31 328 Nimzo-Indian Defense: Leningrad Variation, Benoni Defense 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Bg5 h6 5.Bh4 c5 6.d5 d6
B33 324 Sicilian Defense: Lasker-Pelikan Variation, Schlechter Variation 1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e5 6.Nb3
E17 324 Queen's Indian Defense: Classical Variation, Polugayevsky Gambit 1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Be7 6.O-O O-O 7.d5 exd5 8.Nh4
A00 324 Van Geet Opening: Napoleon Attack 1.Nc3 e5 2.Nf3 Nc6 3.d4
B22 322 Sicilian Defense: Alapin Variation, Barmen Defense Central Exchange 1.e4 c5 2.c3 d5 3.exd5 Qxd5 4.d4 cxd4 5.cxd4 Nc6 6.Nf3 Bg4
B41 322 Sicilian Defense: Kan Variation, Maroczy Bind Bronstein Variation 1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.c4 Nf6 6.Nc3 Bb4 7.Bd3 Nc6
D30 321 Queen's Gambit Declined: Vienna Variation 1.d4 d5 2.c4 e6 3.Nf3 Nf6 4.Bg5 Bb4+
D05 321 Rubinstein Opening: Classical Defense 1.d4 d5 2.Nf3 Nf6 3.e3 e6 4.Bd3 c5 5.b3 Nc6 6.Bb2 Be7 7.O-O O-O
E64 320 King's Indian Defense: Fianchetto Variation, Hungarian Variation 1.d4 Nf6 2.c4 g6 3.Nf3 Bg7 4.g3 d6 5.Bg2 O-O 6.O-O Nbd7 7.Nc3 a6
B17 319 Caro-Kann Defense: Karpov Variation, Tiviakov-Fischer Attack 1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nd7 5.Bc4 Ngf6 6.Nxf6+ Nxf6
C88 318 Ruy Lopez: Closed Variations, Trajkovic Counterattack 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 Bb7
A79 317 Benoni Defense: Classical Variation, Czerniak Defense 1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.Nf3 Bg7 8.Be2 O-O 9.O-O Re8 10.Nd2 Na6 11.f3
E12 316 Queen's Indian Defense: Kasparov-Petrosian Variation, Andersson Variation 1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.Nc3 Bb7 5.a3 Ne4
A04 316 Polish Opening: Zukertort System 1.b4 Nf6 2.Nf3
A00 314 Polish Opening: Czech Defense 1.b4 e5 2.Bb2 d6
B12 314 Caro-Kann Defense: Advance Variation, Van der Wiel Attack Bishop Hnt 1.e4 c6 2.d4 d5 3.e5 Bf5 4.Nc3 e6 5.g4 Bg6 6.Nge2 c5 7.h4
B11 314 Caro-Kann Defense: Two Knights Attack, Mindeno Variation Retreat Line 1.e4 c6 2.Nc3 d5 3.Nf3 Bg4 4.h3 Bh5
B33 312 Sicilian Defense: Lasker-Pelikan Variation, Retreat Variation 1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e5 6.Nf3
E07 310 Catalan Opening: Closed Variation, Botvinnik Variation 1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 Be7 5.Nf3 O-O 6.O-O Nbd7 7.Nc3 c6 8.Qd3
D75 310 Neo-Gruenfeld Defense: Delayed Exchange Variation 1.d4 Nf6 2.c4 g6 3.g3 d5 4.Bg2 Bg7 5.Nf3 O-O 6.cxd5 Nxd5 7.O-O c5 8.dxc5
D17 310 Slav Defense: Czech Variation, Carlsbad Variation Morozevich Variation 1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.a4 Bf5 6.Ne5 Nbd7 7.Nxc4 Qc7 8.g3 e5 9.dxe5 Nxe5 10.Bf4 Nfd7 11.Bg2 g5
C17 309 French Defense: Winawer Variation, Advance Variation Moscow Variation 1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.Qg4
C27 309 Vienna Game 1.e4 e5 2.Nc3 Nf6 3.Bc4 Nxe4
C42 304 Russian Game: Paulsen Attack 1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nc4
C12 304 French Defense: MacCutcheon Variation, Janowski Variation 1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Bb4 5.e5 h6 6.Be3
D09 304 Queen's Gambit Refused: Albin Countergambit, Modern Line 1.d4 d5 2.c4 e5 3.dxe5 d4 4.Nf3 Nc6 5.Nbd2
B02 304 Alekhine Defense: Brooklyn Variation 1.e4 Nf6 2.e5 Ng8
B21 302 Sicilian Defense: Smith-Morra Gambit, Declined Scandinavian Formation 1.e4 c5 2.d4 cxd4 3.c3 d5
A04 300 Zukertort Opening: Polish Defense 1.Nf3 b5
C55 300 Italian Game: Two Knights Defense, Perreux Variation 1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d4 exd4 5.Ng5
A02 298 Bird Opening: From Gambit, Lasker Variation 1.f4 e5 2.fxe5 d6 3.exd6 Bxd6 4.Nf3 g5
B01 298 Scandinavian Defense: Portuguese Variation, Portuguese Gambit 1.e4 d5 2.exd5 Nf6 3.d4 Bg4 4.f3 Bf5 5.Bb5+ Nbd7
B43 298 Sicilian Defense: Kan Variation, Wing Attack Spraggett Attack 1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Nc3 b5 6.Bd3 Qb6 7.Nf3
E61 298 King's Indian Defense: Fianchetto Variation, Benjamin Defense 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Nf3 d6 5.g3 O-O 6.Bg2 c6 7.O-O Qb6
E10 297 Blumenfeld Countergambit: Accepted 1.d4 Nf6 2.c4 e6 3.Nf3 c5 4.d5 b5 5.dxe6 fxe6 6.cxb5 d5
A00 294 Van Geet Opening: Sicilian Two Knights 1.Nc3 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4
E32 293 Nimzo-Indian Defense: Classical Variation, Vitolinsh-Adorjan Gambit 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 O-O 5.a3 Bxc3+ 6.Qxc3 b5
A40 293 Modern Defense: Semi-Averbakh Variation, Pterodactyl Variation 1.e4 g6 2.d4 Bg7 3.c4 c5 4.Nf3 Qa5+
B55 292 Sicilian Defense: Prins Variation, Venice Attack 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.f3 e5 6.Bb5+
C94 290 Ruy Lopez: Morphy Defense, Breyer Defense Quiet Variation 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d6 9.h3 Nb8 10.d3
D86 290 Gruenfeld Defense: Exchange, Simagin's lesser Variation 1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Bc4 O-O 8.Ne2 b6
C52 290 Italian Game: Evans Gambit, Pierce Defense 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 5.c3 Ba5 6.d4 exd4
C02 286 French Defense: Advance, Steinitz Variation 1.e4 e6 2.d4 d5 3.e5 c5 4.dxc5
D14 286 Slav Defense: Exchange Variation, Trifunovic Variation 1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.cxd5 cxd5 5.Nc3 Nc6 6.Bf4 Bf5 7.e3 e6 8.Qb3 Bb4
B20 285 Sicilian Defense: Wing Gambit, Marshall Variation 1.e4 c5 2.b4 cxb4 3.a3
C55 284 Italian Game: Scotch Gambit, Walbrodt-Baird Gambit 1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d4 exd4 5.O-O Bc5 6.c3
B45 284 Sicilian Defense: Four Knights Variation, Cobra Variation 1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Ndb5 Bc5
D40 282 Queen's Gambit Declined: Semi-Tarrasch Defense, Pillsbury Variation 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c5 5.Bg5
A40 282 Pterodactyl Defense: Miscellany, Queen Pterodactyl Quiet 1.d4 g6 2.c4 Bg7 3.Nc3 c5 4.e3
C67 282 Ruy Lopez: Berlin Defense, Berlin Wall J, Rogers Line 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Nxe4 5.d4 Nd6 6.Bxc6 dxc6 7.dxe5 Nf5 8.Qxd8+ Kxd8 9.Nc3 Bd7
E73 282 King's Indian Defense: Averbakh Variation, Spanish Defense 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Be2 O-O 6.Bg5 a6
C01 280 French Defense: Exchange Variation, Svenonius Variation 1.e4 e6 2.d4 d5 3.exd5 exd5 4.Nc3 Nf6 5.Bg5
C35 280 King's Gambit: Accepted, Cunningham Defense McCormick Defense 1.e4 e5 2.f4 exf4 3.Nf3 Be7 4.Bc4 Nf6
B06 279 Pterodactyl Defense: Sicilian, Anhanguera 1.e4 g6 2.d4 Bg7 3.Nc3 c5 4.Nf3 Qa5 5.Be3
C29 277 Vienna Game: Vienna Gambit, Modern Variation 1.e4 e5 2.Nc3 Nf6 3.f4 d5 4.fxe5 Nxe4 5.d3
A28 276 English Opening: King's English Variation, Four Knights Variation Quiet Line 1.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.e3 Bb4 5.Qc2 Bxc3
D90 275 Gruenfeld Defense: Flohr Variation 1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Qa4+
B18 273 Caro-Kann Defense: Classical Variation, Flohr Variation 1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Bf5 5.Ng3 Bg6 6.Nh3
D02 270 Queen's Gambit Refused: Baltic Defense, Pseudo-Chigorin 1.d4 d5 2.c4 Bf5 3.Nc3 e6 4.Nf3 Nc6
D52 269 Queen's Gambit Declined: Cambridge Springs Defense: Rubinstein Variation 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Nbd7 5.e3 c6 6.Nf3 Qa5 7.Nd2 dxc4
C55 267 Italian Game: Two Knights Defense, Max Lange attack 1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d4 exd4 5.O-O Bc5 6.e5
B15 267 Caro-Kann Defense: Gurgenidze Counterattack 1.e4 c6 2.d4 d5 3.Nc3 b5
A43 264 Benoni Defense: Benoni Gambit Accepted 1.d4 c5 2.dxc5
D01 264 Queen Pawn Game: Veresov Atack, Classical Defense 1.d4 d5 2.Nc3 Nf6 3.Bg5 e6 4.Nf3
B28 264 Sicilian Defense: O'Kelly Variation, Venice System Steiner Line 1.e4 c5 2.Nf3 a6 3.c3 d6
C31 264 King's Gambit: Falkbeer Countergambit, Charousek Gambit 1.e4 e5 2.f4 d5 3.exd5 e4 4.d3
C52 262 Italian Game: Evans Gambit, Slow Variation 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 5.c3 Ba5 6.O-O
C45 261 Scotch Game: Steinitz Variation 1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Qh4
C41 260 Philidor Defense: Lion Variation, Lion's Claw II 1.e4 e5 2.Nf3 d6 3.d4 Nd7 4.Nc3 Ngf6 5.Bc4 Be7 6.O-O h6
A52 259 Budapest Defense: Alekhine Variation 1.d4 Nf6 2.c4 e5 3.dxe5 Ng4 4.e4
C06 259 French Defense: Tarrasch Variation, Leningrad Variation 1.e4 e6 2.d4 d5 3.Nd2 Nf6 4.e5 Nfd7 5.Bd3 c5 6.c3 Nc6 7.Ne2 cxd4 8.cxd4 Nb6
B00 258 St. George Defense 1.e4 a6
D44 258 Semi-Slav Defense: Botvinnik System, Ekstrom Variation 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.Bg5 dxc4 6.e4 b5 7.e5 h6 8.Bh4 g5 9.exf6 gxh4 10.Ne5
B06 258 Pterodactyl Defense: Eastern, Pterodactyl 1.e4 g6 2.d4 Bg7 3.Nc3 c5 4.dxc5 Qa5
D31 258 Semi-Slav Defense: Noteboom Variation, Anti-Noteboom Gambit 1.d4 d5 2.Nf3 c6 3.c4 e6 4.Nc3 dxc4 5.g3
D45 257 Semi-Slav Defense: Stoltz Variation, Center Variation 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Qc2 Bd6 7.e4
C40 256 Latvian Gambit: Accepted, Leonhardt Variation 1.e4 e5 2.Nf3 f5 3.Nxe5 Qf6 4.Nc4 fxe4 5.Nc3
C51 255 Italian Game: Evans Gambit, Anderssen Variation 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 5.c3 Be7
C45 254 Scotch Game: Modern Defense 1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Qh4 5.Nc3 Bb4
C29 254 Vienna Game: Vienna Gambit, Breyer Variation 1.e4 e5 2.Nc3 Nf6 3.f4 d5 4.fxe5 Nxe4 5.Nf3 Be7
A97 254 Dutch Defense: Ilyin-Genevsky, Winter Variation 1.d4 f5 2.c4 Nf6 3.g3 e6 4.Bg2 Be7 5.Nf3 O-O 6.O-O d6 7.Nc3 Qe8 8.Re1
B06 254 Modern Defense: Norwegian Defense 1.e4 g6 2.d4 Nf6
A68 253 Benoni Defense: Four Pawns Attack 1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.f4 Bg7 8.Nf3 O-O
C58 252 Italian Game: Two Knights Defense, Polerio Defense Kieseritsky Variation 1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 d5 5.exd5 Na5 6.d3
D51 252 Queen's Gambit Declined: Capablanca anti-Cambridge Springs Variation 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Nbd7 5.e3 c6 6.a3
A04 252 Zukertort Opening: Lisitsyn Gambit Deferred 1.Nf3 f5 2.d3 Nf6 3.e4
C53 251 Italian Game: Classical Variation, Greco Gambit 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Nf6 5.d4 exd4 6.e5 d5
A06 250 Zukertort Opening: Santasiere's Folly 1.Nf3 d5 2.b4
B50 250 Sicilian Defense: Wing Gambit, Deferred Variation 1.e4 c5 2.Nf3 d6 3.b4
D24 249 Queen's Gambit Accepted: Gunsberg Defense, Prianishenmo Gambit 1.d4 d5 2.c4 dxc4 3.Nc3 c5 4.d5 Nf6 5.Nf3 e6 6.e4 exd5 7.e5
C44 249 Ponziani Opening: Spanish Variation 1.e4 e5 2.Nf3 Nc6 3.c3 d5 4.Bb5
C67 248 Ruy Lopez: Open Berlin Defense: l'Hermet Variation 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Nxe4 5.d4 Nd6 6.dxe5
C20 246 King Pawn Game: Leonardis Variation 1.e4 e5 2.d3
A83 246 Dutch Defense: Staunton Gambit, Chigorin Variation 1.d4 f5 2.e4 fxe4 3.Nc3 Nf6 4.Bg5 c6
E61 246 King's Indian Defense: Semi-Classical Variation, Queenside Storm Line 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Nf3 O-O 5.e3 d6 6.Be2 Nbd7 7.O-O e5 8.b4
C67 246 Ruy Lopez: Berlin Defense, Minckwitz Variation 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Nxe4 5.d4 Be7 6.dxe5
B00 244 Nimzowitsch Defense: Kennedy Variation, Paulsen Attack 1.e4 Nc6 2.d4 e5 3.dxe5 Nxe5 4.Nf3
C32 243 King's Gambit: Falkbeer Countergambit, Modern Transfer 1.e4 e5 2.f4 d5 3.exd5 exf4
C52 242 Italian Game: Evans Gambit, Tartakower Attack 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 5.c3 Ba5 6.d4 d6 7.Qb3
A40 242 Caro-Kann Defense: De Bruycker Defense 1.e4 c6 2.d4 Na6
B21 241 Sicilian Defense: McDonnell Attack, Tal Gambit 1.e4 c5 2.f4 d5 3.exd5 Nf6
D67 241 Queen's Gambit Declined: Orthodox Defense, Alekhine Variation 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 Nbd7 7.Rc1 c6 8.Bd3 dxc4 9.Bxc4 Nd5 10.Bxe7 Qxe7 11.Ne4
D37 239 Queen's Gambit Declined: Harrwitz Attack, Main Line New Main Line 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 Be7 5.Bf4 O-O 6.e3 c5 7.dxc5 Bxc5 8.Qc2 Nc6 9.a3 Qa5 10.O-O-O
C47 239 Four Knights Game: Scotch Variation, Krause Gambit 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.d4 Bb4 5.Nxe5
C13 236 French Defense: Alekhine-Chatard Attack, Albin-Chatard Gambit 1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Be7 5.e5 Nfd7 6.h4 Bxg5 7.hxg5 Qxg5
E46 235 Nimzo-Indian Defense: Simagin Variation 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nge2 d5 6.a3 Bd6
E12 234 Queen's Indian Defense: Kasparov-Petrosian Variation, Romanishin Attack 1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.Nc3 Bb7 5.a3 d5 6.cxd5 Nxd5 7.Bd2
A42 234 Modern Defense: Averbakh Variation, Pseudo-Saemisch 1.d4 g6 2.c4 Bg7 3.e4 d6 4.Be3 Nf6 5.f3
A10 234 English Opening: Adorjan Defense 1.c4 g6 2.e4 e5
E46 233 Nimzo-Indian Defense: Ragozin Defense 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 Nc6 5.Nf3 O-O 6.Bd3 d5 7.O-O
C70 232 Ruy Lopez: Morphy Defense, Schliemann Defense Deferred 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 f5
B00 232 Nimzowitsch Defense: Franco-Nimzowitsch Variation 1.e4 Nc6 2.Nf3 e6
A80 232 Dutch Defense: Korchnoi Attack 1.d4 f5 2.h3
B07 231 Rat Defense: Antal Defense 1.e4 d6 2.d4 Nd7
D94 231 Gruenfeld Defense: Three Knights Variation, Paris Variation 1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.e3 O-O 6.Bd3
B51 231 Sicilian Defense: Canal Attack, Moscow Gambit 1.e4 c5 2.Nf3 d6 3.Bb5+ Nc6 4.O-O Bd7 5.c3 a6 6.Bxc6 Bxc6 7.Re1 Nf6 8.d4 Bxe4 9.Bg5
A00 230 Polish Opening: King's Indian Variation 1.b4 Nf6 2.Bb2 g6
C13 229 French Defense: Classical Variation, Richter Attack 1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Be7 5.Bxf6
E27 229 Nimzo-Indian Defense: Saemisch Variation 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.a3 Bxc3+ 5.bxc3 O-O
C58 229 Italian Game: Two Knights Defense, Polerio Defense Bogoljubow Variation 1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 d5 5.exd5 Na5 6.Bb5+ c6 7.dxc6 bxc6 8.Qf3
D62 228 Queen's Gambit Declined: Orthodox Defense, Rubinstein Variation Flohr Line 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 Nbd7 7.Qc2 c5 8.cxd5
B74 227 Sicilian Defense: Dragon Variation, Classical Variation Maroczy Line 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be2 Bg7 7.Be3 Nc6 8.O-O O-O 9.Nb3 Be6 10.f4 Na5
C98 227 Ruy Lopez: Closed Variations, Chigorin Defense 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d6 9.h3 Na5 10.Bc2 c5 11.d4 Qc7 12.Nbd2 Nc6 13.dxc5
C21 226 Danish Gambit: Declined, Sorensen Defense 1.e4 e5 2.d4 exd4 3.c3 d5
C34 226 King's Gambit: Accepted, Bonsch-Osmolovsky Variation 1.e4 e5 2.f4 exf4 3.Nf3 Ne7
A59 224 Benko Gambit: Accepted, Yugoslav without 7,,,Bxf1 1.d4 Nf6 2.c4 c5 3.d5 b5 4.cxb5 a6 5.bxa6 Bxa6 6.Nc3 d6 7.e4
C90 223 Ruy Lopez: Closed Variations, Suetin Variation 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d6 9.a3
B21 222 Sicilian Defense: Smith-Morra Gambit, Accepted Kan Formation 1.e4 c5 2.d4 cxd4 3.c3 dxc3 4.Nxc3 e6 5.Nf3 a6
A42 220 Modern Defense: Pterodactyl Variation 1.d4 g6 2.c4 Bg7 3.Nc3 d6 4.e4 c5 5.Nf3 Qa5
E16 219 Queen's Indian Defense: Fianchetto Variation, Rubinstein Variation 1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 c5 6.d5 exd5 7.Nh4
A40 219 Englund Gambit Complex 1.d4 e5
C40 217 Gunderam Defense 1.e4 e5 2.Nf3 Qe7
C13 217 French Defense: Alekhine-Chatard Attack, Breyer Variation 1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Be7 5.e5 Nfd7 6.h4 c5
C07 216 French Defense: Tarrasch Variation, Open System Suechting Line 1.e4 e6 2.d4 d5 3.Nd2 c5 4.c3
B40 216 Sicilian Defense: Paulsen-Basman Defense 1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Bc5
D35 214 Queen's Gambit Declined: Harrwitz Attack 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bf4
A57 214 Benko Gambit: Accepted, Central Storming Variation 1.d4 Nf6 2.c4 c5 3.d5 b5 4.cxb5 a6 5.bxa6 g6 6.Nc3 Bxa6 7.f4
A00 213 Saragossa Opening 1.c3
A94 213 Dutch Defense: Classical Variation, Stonewall Variation 1.d4 f5 2.c4 Nf6 3.g3 e6 4.Bg2 Be7 5.Nf3 O-O 6.O-O d5 7.b3 c6 8.Ba3
B72 212 Sicilian Defense: Dragon, Classical, Grigoriev Variation 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.Be2 Nc6 8.Qd2 O-O 9.O-O-O
D84 211 Gruenfeld Defense: Brinckmann Attack, Grünfeld Gambit Accepted 1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Bf4 Bg7 5.e3 O-O 6.cxd5 Nxd5 7.Nxd5 Qxd5 8.Bxc7
E29 211 Nimzo-Indian Defense: Saemisch Variation, Capablanca Variation 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.a3 Bxc3+ 5.bxc3 O-O 6.e3 c5 7.Bd3 Nc6 8.Ne2 b6 9.e4 Ne8
C55 210 Italian Game: Scotch Gambit, De Riviere Defense 1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d4 exd4 5.O-O Be7
C67 210 Ruy Lopez: Berlin Defense, Rosenthal Variation 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Nxe4 5.d4 a6
C26 209 Vienna Game: Stanley Variation, Reversed Spanish 1.e4 e5 2.Nc3 Nf6 3.Bc4 Bb4
D59 209 Queen's Gambit Declined: Tartakower Variation 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 h6 7.Bh4 b6 8.cxd5 Nxd5 9.Bxe7 Qxe7 10.Nxd5 exd5 11.Rc1 Be6
E60 208 Indian Game: Anti-Grünfeld, Advance Variation 1.d4 Nf6 2.c4 g6 3.d5
B62 207 Sicilian Defense: Richter-Rauzer Variation 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 7.Qd3
E74 206 King's Indian Defense: Averbakh Variation, Benoni Defense Exchange Variation 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Be2 O-O 6.Bg5 c5 7.dxc5
B00 206 Nimzowitsch Defense: French Connection 1.e4 Nc6 2.Nc3 e6
D20 204 Queen's Gambit Accepted: Linares Variation 1.d4 d5 2.c4 dxc4 3.e4 c5 4.d5 Nf6 5.Nc3 b5
A25 203 English Opening: King's English Variation, Bremen-Hort Variation 1.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.e3 d6 6.Nge2 Be6
D06 202 Queen's Gambit Refused: Chigorin Defense, Tartakower Gambit 1.d4 d5 2.c4 Nc6 3.Nc3 e5
D01 200 Queen Pawn Game: Veresov Atack, Veresov Variation 1.d4 d5 2.Nc3 Nf6 3.Bg5 Bf5 4.Bxf6
A53 200 Old Indian Defense: Janowski Variation, Fianchetto Variation 1.d4 Nf6 2.c4 d6 3.Nc3 Bf5 4.g3
C07 199 French Defense: Tarrasch, Eliskases Variation 1.e4 e6 2.d4 d5 3.Nd2 c5 4.exd5 Qxd5 5.Ngf3 cxd4 6.Bc4 Qd8
E25 199 Nimzo-Indian Defense: Saemisch, Romanovsky Variation 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.a3 Bxc3+ 5.bxc3 c5 6.f3 d5 7.cxd5 Nxd5 8.dxc5 f5
B03 198 Alekhine Defense: Four Pawns Attack, Fianchetto Variation 1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.c4 Nb6 5.f4 g6
C81 198 Ruy Lopez: Open, Howell attack, Ekstroem Variation 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 Be6 9.Qe2 Be7 10.Rd1 O-O 11.c4 bxc4 12.Bxc4 Qd7
B22 198 Sicilian Defense: Alapin Variation, Stoltz Attack Ivanchuk Line 1.e4 c5 2.c3 Nf6 3.e5 Nd5 4.Nf3 Nc6 5.Bc4 Nb6 6.Bb3 c4 7.Bc2 Qc7 8.Qe2 g5
D03 198 Queen Pawn Game: Torre Attack, Gruenfeld Variation 1.d4 d5 2.Nf3 Nf6 3.Bg5 g6
C42 196 Russian Game: Classical Attack, Berger Variation 1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.d4 d5 6.Bd3 Be7 7.O-O Nc6 8.Re1 Bg4 9.c3 f5 10.Nbd2
C53 195 Italian Game: Classical Variation, De la Bourdonnais Variation 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 d6 5.d4 exd4 6.cxd4 Bb6
C59 194 Italian Game: Two Knights Defense, Steinitz Variation 1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 d5 5.exd5 Na5 6.Bb5+ c6 7.dxc6 bxc6 8.Be2 h6 9.Nh3
B01 194 Scandinavian Defense: Anderssen Counterattack 1.e4 d5 2.exd5 Qxd5 3.Nc3 Qa5 4.d4 e5
C49 194 Four Knights Game: Nimzowitsch (Paulsen) 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bb4 5.O-O O-O 6.Bxc6
B20 193 Sicilian Defense: Bowlder Attack 1.e4 c5 2.Bc4
D34 192 Tarrasch Defense: Classical Variation, Classical Tarrasch Gambit 1.d4 d5 2.c4 e6 3.Nc3 c5 4.cxd5 exd5 5.Nf3 Nc6 6.g3 Nf6 7.Bg2 Be7 8.O-O O-O 9.dxc5 d4
D30 192 Queen's Gambit Declined: Capablanca Variation 1.d4 d5 2.c4 e6 3.Nf3 Nf6 4.Bg5 Nbd7 5.e3 c6 6.Nbd2
A80 190 Dutch Defense: Krejcik Gambit 1.d4 f5 2.g4
D00 190 Queen Pawn Game: Levitsky Attack, Euwe Variation Modern Line 1.d4 d5 2.Bg5 h6 3.Bh4 c6 4.Nf3 Qb6
A49 190 Zukertort Opening: Double Fianchetto Attack 1.Nf3 Nf6 2.b3 g6 3.Bb2 Bg7 4.g3 O-O 5.Bg2 d6 6.O-O
A41 190 Queen Pawn Game: Anglo-Slav Opening 1.d4 c6 2.c4 d6
B31 189 Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation Gufeld Gambit 1.e4 c5 2.Nf3 Nc6 3.Bb5 g6 4.O-O Bg7 5.c3 e5 6.d4
B85 189 Sicilian Defense: Scheveningen Variation, Classical Variation Paulsen Variation 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Be2 a6 7.O-O Qc7 8.f4 Nc6 9.Kh1 Be7 10.a4
C54 189 Italian Game: Classical Variation, Greco Gambit Main Line 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Nf6 5.d4 exd4 6.cxd4 Bb4+ 7.Nc3 Nxe4 8.O-O Bxc3
D49 188 Semi-Slav Defense: Meran Variation, Sozin Variation II 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Bd3 a6 9.e4 c5 10.e5 cxd4 11.Nxb5 Nxe5
D21 188 Queen's Gambit Accepted: Alekhine Defense, Borisenko-Furman Variation 1.d4 d5 2.c4 dxc4 3.Nf3 a6 4.e4
C14 187 French Defense: Classical Variation, Rubinstein Variation 1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Be7 5.e5 Nfd7 6.Bxe7 Qxe7 7.Qd2
D07 187 Queen's Gambit Refused: Chigorin Defense, Exchange Variation Costa's Line 1.d4 d5 2.c4 Nc6 3.cxd5 Qxd5 4.e3 e5 5.Nc3 Bb4 6.Bd2 Bxc3 7.Bxc3 exd4 8.Ne2
C00 187 St. George Defense 1.e4 e6 2.d4 a6
D00 186 Queen Pawn Game: Veresov Atack, Alburt Defense 1.d4 d5 2.Nc3 Bf5
C51 186 Italian Game: Evans Gambit, Anderssen Variation Cordel Line 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 5.c3 Be7 6.d4 Na5
C83 186 Ruy Lopez: Open Variations, Classical Defense Main Line 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 Be6 9.c3 Be7 10.Re1
A09 184 Reti Opening: Reversed Blumenfeld Gambit 1.Nf3 d5 2.c4 d4 3.e3 c5 4.b4
A56 182 Benoni Defense: Weenink Variation 1.d4 Nf6 2.c4 c5 3.dxc5 e6
C17 182 French Defense: Winawer Variation, Bogoljubow Variation Icelandic Defense 1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.Bd2 Ne7 6.f4
C20 181 Bishop's Opening: Boi Variation 1.e4 e5 2.Bc4 Bc5
C43 181 Russian Game: Modern Attack, Murrey Variation 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 Nc6
C83 180 Ruy Lopez: Open Variations, Malkin Variation 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 Be6 9.c3 Be7 10.Nbd2 O-O 11.Qe2
B04 179 Alekhine Defense: Modern Variation, Keres Variation 1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.Nf3 g6 5.Bc4 Nb6 6.Bb3 Bg7 7.a4
B13 179 Caro-Kann Defense: Panov Attack, Modern Defense Czerniak Line 1.e4 c6 2.d4 d5 3.exd5 cxd5 4.c4 Nf6 5.Nc3 Nc6 6.Bg5 Qa5
E23 179 Nimzo-Indian Defense: Spielmann Variation, Romanovsky Gambit 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qb3 c5 5.dxc5 Nc6
D52 178 Queen's Gambit Declined: Cambridge Springs Defense: Capablanca Variation 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Nbd7 5.e3 c6 6.Nf3 Qa5 7.Bxf6
C54 178 Italian Game: Classical Variation, Greco Gambit Moeller-Therkatz Attack 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Nf6 5.d4 exd4 6.cxd4 Bb4+ 7.Nc3 Nxe4 8.O-O Bxc3 9.d5
B33 178 Sicilian Defense: Lasker-Pelikan Variation, Sveshnikov Variation Peresypkin's Sacrifice 1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e5 6.Ndb5 d6 7.Bg5 a6 8.Na3 b5 9.Bxf6 gxf6 10.Nd5 f5 11.Bxb5
A04 178 Zukertort Opening: Slav Invitation 1.Nf3 c6
A40 178 Mikenas Defense: Lithuanian Variation 1.d4 Nc6 2.c4 e5 3.d5 Nce7
C02 178 French Defense: Advance Variation, Nimzowitsch Attack 1.e4 e6 2.d4 d5 3.e5 c5 4.Qg4
C13 178 French Defense: Classical Variation, Tartakower Variation 1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Be7 5.e5 Ne4
B28 178 Sicilian Defense: O'Kelly Variation, Reti System 1.e4 c5 2.Nf3 a6 3.g3
C48 177 Four Knights Game: Spanish Variation, Classical Variation Marshall Gambit 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bc5 5.Nxe5 Nd4 6.Ba4 O-O
C42 176 Russian Game: Classical Attack, Mason Variation 1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.d4 d5 6.Bd3 Be7 7.O-O O-O
A53 176 Old Indian Defense: Janowski Variation, Main Line 1.d4 Nf6 2.c4 d6 3.Nc3 Bf5 4.f3
A91 176 Dutch Defense: Classical Variation, Blackburne Attack 1.d4 f5 2.c4 Nf6 3.g3 e6 4.Bg2 Be7 5.Nh3
B40 174 Sicilian Defense: Marshall Counterattack 1.e4 c5 2.Nf3 e6 3.d4 d5
C00 174 French Defense: Reversed Philidor Formation 1.e4 e6 2.d3 d5 3.Nd2 Nf6 4.Ngf3 Nc6 5.Be2
C57 173 Italian Game: Two Knights Defense, Ulvestad Variation 1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 d5 5.exd5 b5
C30 172 King's Gambit: Declined, Queen's Knight Defense 1.e4 e5 2.f4 Nc6
A81 172 Dutch Defense: Blackburne Variation 1.d4 f5 2.g3 Nf6 3.Bg2 e6 4.Nh3
C49 172 Four Knights Game: Spanish Variation, Symmetrical Variation 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bb4 5.O-O O-O 6.d3 d6 7.Ne2
B00 172 St. George Defense: New St. George, Traditional Line 1.e4 a6 2.d4 e6 3.Nf3 b5 4.Bd3 c5 5.c3 Bb7 6.O-O Nf6
C41 171 Philidor Defense: Nimzowitsch Variation, Rellstab Variation 1.e4 e5 2.Nf3 d6 3.d4 Nf6 4.dxe5 Nxe4 5.Qd5
D99 171 Gruenfeld Defense: Russian Variation, Smyslov Variation 1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Qb3 dxc4 6.Qxc4 O-O 7.e4 Bg4 8.Be3 Nfd7 9.Qb3
B96 170 Sicilian Defense: Najdorf Variation, Polugayevsky Variation Simagin Line 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6 7.f4 b5 8.e5 dxe5 9.fxe5 Qc7 10.Qe2
D51 170 Queen's Gambit Declined: Manhattan Variation 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Nbd7 5.e3 Bb4
A00 170 Van Geet Opening: Reversed Nimzowitsch 1.Nc3 e5
D26 170 Queen's Gambit Accepted: Classical Defense, Steinitz Variation Exchange Variation 1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5 6.O-O cxd4
A96 169 Dutch Defense: Classical Variation, Huisl Variation 1.d4 f5 2.c4 Nf6 3.g3 e6 4.Bg2 Be7 5.Nf3 O-O 6.O-O d6 7.Nc3 Ne4
B53 168 Sicilian Defense: Modern Variations, Tartakower 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.c3
C82 167 Ruy Lopez: Open Variations, Dilworth Variation 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 Be6 9.c3 Bc5 10.Nbd2 O-O 11.Bc2 Nxf2
E63 167 King's Indian Defense: Fianchetto Variation, Panno Variation Korchnoi Line 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Nf3 d6 5.g3 O-O 6.Bg2 Nc6 7.O-O a6 8.h3 Rb8 9.Be3 b5 10.Nd2
B00 166 Nimzowitsch Defense: Lean Variation, Colorado Counter Accepted 1.e4 Nc6 2.Nf3 f5 3.exf5
D30 166 Queen's Gambit Declined: Tarrasch Defense, Pseudo-Tarrasch Bishop Attack 1.d4 d5 2.c4 e6 3.Nf3 c5 4.cxd5 exd5 5.Bg5
A00 166 Hungarian Opening: Catalan Formation 1.g3 d5 2.Bg2 e6
C80 166 Ruy Lopez: Open Variations, Riga Variation 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 exd4
B28 165 Sicilian Defense: O'Kelly Variation, Venice System Barcza Line 1.e4 c5 2.Nf3 a6 3.c3 Nf6
C38 165 King's Gambit: Accepted, Greco Gambit 1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 Bg7 5.h4 h6 6.d4 d6
C45 164 Scotch Game: Scotch Gambit, Kingside Variation 1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Bc4 Nf6 5.e5 Ng4
C40 163 Latvian Gambit: Accepted, Bilguer Variation 1.e4 e5 2.Nf3 f5 3.Nxe5 Qf6 4.d4 d6 5.Nc4
E64 163 King's Indian Defense: Fianchetto Variation, Pterodactyl Variation 1.d4 Nf6 2.c4 g6 3.Nf3 Bg7 4.g3 c5 5.Bg2 Qa5+
A00 162 Polish Opening: Bugayev Attack 1.b4 e5 2.a3
C44 162 Scotch Game: Göring Gambit, Main Line 1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.c3 dxc3 5.Nxc3 Bb4
B71 162 Sicilian Defense: Dragon Variation, Levenfish Variation Main Line 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.f4 Nbd7
B06 162 Modern Defense: Improved Maroczy 1.e4 g6 2.d4 Bg7 3.Nf3 c5 4.c4 Qb6
C33 162 King's Gambit: Accepted, Mason-Keres Gambit 1.e4 e5 2.f4 exf4 3.Nc3
E30 161 Nimzo-Indian Defense: Leningrad Variation, Averbakh Gambit 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Bg5 h6 5.Bh4 c5 6.d5 b5
C51 161 Italian Game: Evans gambit declined, 5.a4 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bb6 5.a4
C57 160 Italian Game: Two Knights Defense, Fritz Variation 1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 d5 5.exd5 Nd4
C54 160 Italian Game: Classical Variation, Greco Gambit Anderssen Variation 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Nf6 5.d4 exd4 6.e5 d5 7.Bb5 Ne4 8.cxd4 Bb4+
E97 158 King's Indian Defense: Orthodox Variation, Korchnoi Attack 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O Nc6 8.d5 Ne7 9.Bd2
B07 158 Pirc Defense: Chinese Variation 1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Be2 Bg7 5.g4
C45 158 Scotch Game: Blumenfeld attack 1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Bc5 5.Be3 Qf6 6.Nb5
C47 158 Four Knights Game: Scotch Variation, Krause Gambit Leonhardt Defense 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.d4 Bb4 5.Nxe5 Qe7
D02 157 Queen Pawn Game: Anti-Torre 1.d4 d5 2.Nf3 Bg4
C70 155 Ruy Lopez: Morphy Defense, Classical Defense Deferred 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Bc5
B90 155 Sicilian Defense: Najdorf Variation, Freak Attack 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Rg1
A00 154 Polish Opening: Tartakower Gambit 1.b4 e5 2.Bb2 f6 3.e4
B09 152 Pirc Defense: Austrian Attack, Ljubojevic Variation 1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.f4 Bg7 5.Bc4
D68 151 Queen's Gambit Declined: Orthodox Defense, Classical Variation 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 Nbd7 7.Rc1 c6 8.Bd3 dxc4 9.Bxc4 Nd5 10.Bxe7 Qxe7 11.O-O Nxc3 12.Rxc3 e5 13.Qc2
C82 151 Ruy Lopez: Open Variations, Motzko Attack II 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 Be6 9.c3 Bc5 10.Qd3
D85 150 Gruenfeld Defense: Exchange Variation, Nadanian Attack 1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.Na4
C44 150 Scotch Game: Göring Gambit, Bardeleben Variation 1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.c3 dxc3 5.Nxc3 Bb4 6.Bc4 Nf6
A42 150 Modern Defense: Averbakh System, Randspringer Variation 1.d4 g6 2.c4 Bg7 3.Nc3 d6 4.e4 f5
C08 150 French Defense: Tarrasch Variation, Open System Advance Line 1.e4 e6 2.d4 d5 3.Nd2 c5 4.exd5 exd5 5.Ngf3 c4
C60 150 Ruy Lopez: Cozio Defense, Paulsen Variation 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nge7 4.Nc3 g6
B30 149 Sicilian Defense: Closed Sicilian, Anti-Sveshnikov Variation Kharlov-Kramnik Line 1.e4 c5 2.Nc3 Nc6 3.Nf3 e5 4.Bc4 d6 5.d3 Be7 6.Nd2 Bg5
E93 148 King's Indian Defense: Petrosian Variation, Keres Defense 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.d5 Nbd7 8.Bg5 h6 9.Bh4 g5 10.Bg3 Nh5 11.h4
A82 148 Dutch Defense: Staunton Gambit, Balogh Defense 1.d4 f5 2.e4 d6
C42 148 Russian Game: Classical Attack, Chigorin Variation Browne Attack 1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.d4 d5 6.Bd3 Be7 7.O-O Nc6 8.c4 Nb4 9.cxd5
B28 148 Sicilian Defense: O'Kelly Variation, Quiet System 1.e4 c5 2.Nf3 a6 3.d3
A41 148 Zukertort Opening: Wade Defense, Chigorin Plan 1.Nf3 d6 2.d4 Bg4 3.c4 Nd7 4.Qb3 Rb8
D00 147 Blackmar-Diemer Gambit: Vienna Variation 1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.f3 Bf5
C82 147 Ruy Lopez: Open Variations, Berlin Variation 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 Be6 9.c3 Nc5
B00 147 Nimzowitsch Defense: Scandinavian Variation, Bogoljubow Variation Heinola-Deppe Gambit 1.e4 Nc6 2.d4 d5 3.Nc3 e5
D09 146 Queen's Gambit Refused: Albin Countergambit, Fianchetto Variation Bg4 Line 1.d4 d5 2.c4 e5 3.dxe5 d4 4.Nf3 Nc6 5.g3 Bg4
A00 146 Grob Opening 1.g4
C32 146 King's Gambit: Falkbeer Countergambit, Charousek Gambit Accepted 1.e4 e5 2.f4 d5 3.exd5 e4 4.d3 Nf6 5.dxe4
C15 146 French Defense: Winawer Variation, Fingerslip Variation Main Line 1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.Bd2 dxe4 5.Qg4 Nf6 6.Qxg7 Rg8 7.Qh6
B34 144 Sicilian Defense: Accelerated Dragon, Exchange Variation 1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 g6 5.Nxc6
D09 144 Queen's Gambit Refused: Albin Countergambit, Fianchetto Variation Be6 Line 1.d4 d5 2.c4 e5 3.dxe5 d4 4.Nf3 Nc6 5.g3 Be6
C34 144 King's Gambit: Accepted, Becker Defense 1.e4 e5 2.f4 exf4 3.Nf3 h6
C70 144 Ruy Lopez: Morphy Defense, Fianchetto Defense Deferred 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 g6
D85 144 Gruenfeld Defense: Exchange Variation, Modern Exchange Variation Kramnik's line 1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Nf3 c5 8.h3
A15 143 English Opening: Anglo-Indian Defense, Scandavian Defense Exchange Variation 1.c4 Nf6 2.Nf3 d5 3.cxd5 Nxd5
D15 141 Slav Defense: Suchting Variation 1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 Qb6
E77 140 King's Indian Defense: Four Pawns Attack, Florentine Gambit 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f4 O-O 6.Be2 c5 7.d5 e6 8.Nf3 exd5 9.e5
D00 140 Blackmar-Diemer Gambit: Netherlands Variation 1.d4 d5 2.e4 dxe4 3.Nc3 f5
B40 140 Sicilian Defense: Gaw-Paw Variation 1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Qb6
C67 139 Ruy Lopez: Berlin Defense, l'Hermet Variation Westerinen Line 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Nxe4 5.d4 Nd6 6.Bxc6 dxc6 7.dxe5 Ne4
A18 139 English Opening: Anglo-Indian Defense, Zviagintsev-Krasenkov Attack 1.c4 Nf6 2.Nc3 e6 3.Nf3 Bb4 4.g4
B40 139 Sicilian Defense: Drazic Variation 1.e4 c5 2.Nf3 e6 3.d4 a6
A00 138 Polish Opening: Outflank Variation 1.b4 c6
C14 138 French Defense: Classical Variation, Alapin Variation 1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Be7 5.e5 Nfd7 6.Bxe7 Qxe7 7.Nb5
E89 137 King's Indian Defense: Saemisch Variation, Closed Variation Main Line 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Be3 e5 7.d5 c6 8.Nge2 cxd5
B31 137 Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation Lutikov Gambit 1.e4 c5 2.Nf3 Nc6 3.Bb5 g6 4.O-O Bg7 5.c3 Nf6 6.d4
A13 136 English Opening: Agincourt Defense, Bogoljubow Defense 1.c4 e6 2.Nf3 d5 3.g3 Nf6 4.Bg2 Bd6
C41 135 Philidor Defense: Hanham Variation, Steiner Variation 1.e4 e5 2.Nf3 d6 3.d4 Nd7 4.Bc4 c6 5.O-O Be7 6.dxe5
A17 134 English Opening: Anglo-Indian Defense, Queens Indian Variation 1.c4 Nf6 2.Nc3 e6 3.Nf3 b6 4.e4 Bb7 5.Bd3
B06 134 Pterodactyl Defense: Eastern, Anhanguera 1.e4 g6 2.d4 Bg7 3.Nc3 c5 4.Be3
C63 133 Ruy Lopez: Schliemann Defense, Exchange Variation 1.e4 e5 2.Nf3 Nc6 3.Bb5 f5 4.Bxc6
E51 133 Nimzo-Indian Defense: Normal Variation, Saemisch Deferred 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 d5 6.a3
D27 133 Queen's Gambit Accepted: Classical Defense, Russian Gambit 1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5 6.O-O a6 7.e4
A52 132 Budapest Defense: Alekhine Variation, Abonyi Variation 1.d4 Nf6 2.c4 e5 3.dxe5 Ng4 4.e4 Nxe5 5.f4 Nec6
C40 132 Latvian Gambit: Accepted 1.e4 e5 2.Nf3 f5 3.exf5
D00 132 Blackmar-Diemer Gambit: Tartakower Variation 1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.f3 exf3 5.Nxf3 Bf5
D02 132 London System: Poisoned Pawn Variation 1.d4 d5 2.Nf3 Nf6 3.Bf4 c5 4.e3 Qb6 5.Nc3
A01 131 Nimzo-Larsen Attack: Symmetrical Variation 1.b3 b6
C29 131 Vienna Game: Vienna Gambit, Paulsen Attack 1.e4 e5 2.Nc3 Nf6 3.f4 d5 4.fxe5 Nxe4 5.Qf3
C41 130 Philidor Defense: Philidor Countergambit 1.e4 e5 2.Nf3 d6 3.d4 f5
D85 129 Gruenfeld Defense: Exchange Variation, Modern Exchange Variation Pawn Grab line 1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Nf3 c5 8.Rb1 O-O 9.Be2 Nc6 10.d5 Bxc3+
B24 129 Sicilian Defense: Closed, Smyslov Variation 1.e4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 e6 6.Be3 Nd4 7.Nce2
B09 129 Pirc Defense: Austrian Attack, Unzicker Attack Bronstein Variation 1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.f4 Bg7 5.Nf3 O-O 6.e5 Nfd7 7.h4
C45 128 Scotch Game: Classical Variation, Millennium Variation 1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Bc5 5.Be3 Qf6 6.c3 Qg6
C46 128 Three Knights Opening: Steinitz - Rosenthal Variation 1.e4 e5 2.Nf3 Nc6 3.Nc3 g6 4.d4 exd4 5.Nd5
A40 128 English Defense: Perrin Variation 1.c4 e6 2.d4 b6 3.e4 Bb7 4.Bd3 Nc6
A45 128 Indian Game: Paleface Attack 1.d4 Nf6 2.f3
D00 126 Blackmar-Diemer Gambit: Teichmann Variation 1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.f3 exf3 5.Nxf3 Bg4
E73 126 King's Indian Defense: Averbakh Variation, Nc6 Defense 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Be2 O-O 6.Bg5 Nc6
B12 123 Caro-Kann Defense: Advance Variation, Bayonet Attack 1.e4 c6 2.d4 d5 3.e5 Bf5 4.g4
C23 123 Bishop's Opening: Philidor counter-attack 1.e4 e5 2.Bc4 c6
C03 122 French Defense: Tarrasch Variation, Haberditz Variation 1.e4 e6 2.d4 d5 3.Nd2 f5
C44 122 Ponziani Opening: Ponziani Countergambit 1.e4 e5 2.Nf3 Nc6 3.c3 f5
C53 121 Italian Game: Classical Variation, Albin Gambit 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Nf6 5.O-O
B00 121 Nimzowitsch Defense: Scandinavian Variation, Bogoljubow Variation Nimzowitsch Gambit 1.e4 Nc6 2.d4 d5 3.Nc3 dxe4 4.d5 Ne5
C18 121 French Defense: Winawer Variation, Poisoned Pawn Variation Paoli Variation 1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.a3 Bxc3+ 6.bxc3 Ne7 7.Qg4 Qc7 8.Qxg7 Rg8 9.Qxh7 cxd4 10.Kd1
A66 121 Benoni Defense: Mikenas Variation 1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.f4 Bg7 8.e5
C45 121 Scotch Game: Romanishin Variation 1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Bc5 5.Nb3 Bb4+
A40 120 Englund Gambit Complex: Englund Gambit 1.d4 e5 2.dxe5 Nc6 3.Nf3 Qe7
B50 120 Sicilian Defense: Delayed Alapin, Basman-Palatnik Double Gambit 1.e4 c5 2.Nf3 d6 3.c3 Nf6 4.Be2 Nc6 5.d4 cxd4 6.cxd4 Nxe4 7.d5 Qa5+ 8.Nc3 Nxc3 9.bxc3
D87 119 Gruenfeld Defense: Exchange Variation, Seville Variation 1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Bc4 O-O 8.Ne2 c5 9.O-O Nc6 10.Be3 Bg4 11.f3 Na5 12.Bxf7+
D31 119 Semi-Slav Defense: Marshall Gambit, Forgotten Variation 1.d4 d5 2.c4 e6 3.Nc3 c6 4.e4 dxe4 5.Nxe4 Bb4+ 5.Nc3
D49 119 Semi-Slav Defense: Meran Variation, Rabinovich Variation 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Bd3 a6 9.e4 c5 10.e5 cxd4 11.Nxb5 Ng4
C66 118 Ruy Lopez: Berlin Defense, Closed Wolf Variation 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O d6 5.d4 Bd7 6.Nc3 exd4
D63 118 Queen's Gambit Declined: Orthodox Defense, Pillsbury Variation 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 Nbd7 7.Rc1 b6 8.cxd5 exd5 9.Bd3
C41 117 Philidor Defense: Lion Variation, Sozin Variation 1.e4 e5 2.Nf3 d6 3.d4 Nf6 4.Nc3 Nbd7 5.Bc4 Be7 6.O-O O-O 7.Qe2 c6 8.a4 exd4
C15 116 French Defense: Winawer Variation, Fingerslip Variation Kunin Double Gambit 1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.Bd2 dxe4 5.Qg4 Qxd4
B05 116 Alekhine Defense: Modern Variation, Panov Variation 1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.Nf3 Bg4 5.h3
C44 114 King's Knight Opening: Konstantinopolsky Opening 1.e4 e5 2.Nf3 Nc6 3.g3
C10 113 French Defense: Rubinstein Variation, Maric Variation 1.e4 e6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Qd5
E54 112 Nimzo-Indian Defense: Normal Variation, Gligoric System Smyslov Variation 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 d5 6.Bd3 c5 7.O-O dxc4 8.Bxc4 Qe7
A48 111 Indian Game: Colle System, King's Indian Variation 1.d4 Nf6 2.Nf3 g6 3.e3 Bg7 4.Bd3 d6
C45 111 Scotch Game: Meitner Variation 1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Bc5 5.Be3 Qf6 6.c3 Nge7 7.Nc2
A18 111 English Opening: Anglo-Indian Defense, Flohr-Mikenas-Carls Variation 1.c4 Nf6 2.Nc3 e6 3.e4 Nc6
B81 111 Sicilian Defense: Scheveningen Variation, Delayed Keres Attack Perenyi Gambit 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Be3 a6 7.g4 e5 8.Nf5 g6 9.g5
C55 110 Italian Game: Scotch Gambit, Max Lange Attack Long Variation 1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d4 exd4 5.O-O Bc5 6.e5 d5 7.exf6 dxc4 8.Re1+ Be6 9.Ng5 Qd5 10.Nc3 Qf5 11.Nce4
A10 110 English Opening: Anglo-Scandinavian Defense 1.c4 d5
D70 110 Gruenfeld Defense: Lutikov Variation 1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.f3
D83 110 Gruenfeld Defense: Brinckmann Attack, Grünfeld Gambit Botvinnik Variation 1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Bf4 Bg7 5.e3 O-O 6.Rc1 c5 7.dxc5 Be6
B53 109 Sicilian Defense: Chekhover Variation, Zaitsev Defense 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Qxd4 Nc6 5.Bb5 Qd7
A56 108 Benoni Defense: Vulture Defense 1.d4 c5 2.d5 Nf6 3.c4 Ne4
C63 108 Ruy Lopez: Schliemann Defense, Möhring Variation 1.e4 e5 2.Nf3 Nc6 3.Bb5 f5 4.Nc3 fxe4 5.Nxe4 d5 6.Nxe5 dxe4 7.Nxc6 Qd5
B74 108 Sicilian Defense: Dragon Variation, Classical Variation Alekhine Line 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be2 Bg7 7.Be3 Nc6 8.O-O O-O 9.Nb3 a5
C25 108 Vienna Game: Omaha Gambit 1.e4 e5 2.Nc3 d6 3.f4
B98 107 Sicilian Defense: Najdorf Variation, Goteborg (Argentine) 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6 7.f4 Be7 8.Qf3 h6 9.Bh4 g5
C00 106 French Defense: Reti-Spielmann Attack 1.e4 e6 2.g3
E11 106 Bogo-Indian Defense: Retreat Variation 1.d4 Nf6 2.c4 e6 3.Nf3 Bb4+ 4.Bd2 Be7
A46 106 Torre Attack: Classical Defense, Petrosian Gambit 1.d4 Nf6 2.Nf3 e6 3.Bg5 c5 4.e3 b6 5.d5
C30 106 King's Gambit: Declined, Petrov's Defense 1.e4 e5 2.f4 Nf6
E61 105 King's Indian Defense: Semi-Classical Variation, Benoni Variation 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Nf3 O-O 5.e3 d6 6.Be2 c6
A58 104 Benko Gambit: Nd2 Variation 1.d4 Nf6 2.c4 c5 3.d5 b5 4.cxb5 a6 5.bxa6 Bxa6 6.Nc3 d6 7.Nf3 g6 8.Nd2
E10 104 Blumenfeld Countergambit: Spielmann Variation 1.d4 Nf6 2.c4 e6 3.Nf3 c5 4.d5 b5 5.Bg5 exd5 6.cxd5 h6
C18 103 French Defense: Winawer Variation, Maroczy-Wallis Variation 1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.a3 cxd4 6.axb4 dxc3
C68 102 Ruy Lopez: Exchange Variation, Lutikov Variation 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6 bxc6
C57 102 Italian Game: Two Knights Defense, Traxler Counterattack Bishop sac line 1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 Bc5 5.Bxf7+
E12 102 Queen's Indian Defense: Kasparov Variation, Botvinnik Attack 1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.Nc3 Bb7 5.Bg5 h6 6.Bh4 g5 7.Bg3 Nh5
C65 102 Ruy Lopez: Berlin Defense, Nyholm Attack 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.d4 exd4 5.O-O
B17 101 Caro-Kann Defense: Karpov Variation, Modern Variation Ivanchuk Defense 1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nd7 5.Ng5 Ndf6
C20 100 English Opening: The Whale 1.e4 e5 2.c4
C40 100 Latvian Gambit: Mason Countergambit 1.e4 e5 2.Nf3 f5 3.d4
B20 100 Sicilian Defense: Wing Gambit, Carlsbad Variation 1.e4 c5 2.b4 cxb4 3.a3 bxa3
B50 100 Sicilian Defense: Modern Variations, Anti-Qxd4 Move Order Accepted 1.e4 c5 2.Nf3 d6 3.d4 Nf6 4.dxc5 Nxe4
D00 98 Queen Pawn Game: Hübsch Gambit 1.d4 Nf6 2.Nc3 d5 3.e4 Nxe4
C44 98 Ponziani Opening: Spanish Variation, Harrwitz Attack Nikitin Gambit 1.e4 e5 2.Nf3 Nc6 3.c3 d5 4.Bb5 dxe4 5.Nxe5 Qd5 6.Qa4
B31 98 Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation Totsky Attack 1.e4 c5 2.Nf3 Nc6 3.Bb5 g6 4.O-O Bg7 5.c3 Nf6 6.Qa4
C12 96 French Defense: MacCutcheon Variation, Chigorin Variation 1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Bb4 5.e5 h6 6.exf6
A28 96 English Opening: King's English Variation, Four Knights Variation 1.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.d4 exd4 5.Nxd4 Bb4 6.Bg5 h6 7.Bh4 Bxc3+ 8.bxc3 Ne5
A06 96 Zukertort Opening: Reversed Mexican Defense 1.Nf3 d5 2.Nc3
A28 94 English Opening: King's English Variation, Four Knights Variation Quiet Line 1.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.e3 Bb4 5.Qc2 O-O 6.Nd5 Re8 7.Qf5
E99 94 King's Indian Defense: Orthodox Variation, Classical System Kozul Gambit 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O Nc6 8.d5 Ne7 9.Ne1 Nd7 10.Be3 f5 11.f3 f4 12.Bf2 g5 13.Rc1 Ng6 14.c5
C89 93 Ruy Lopez: Marshall Attack, Steiner Variation 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d5 9.exd5 e4
C00 93 French Defense: Pelikan Variation 1.e4 e6 2.Nc3 d5 3.f4
A20 93 English Opening: King's English Variation, Nimzowitsch-Flohr Variation 1.c4 e5 2.Nf3 e4
D00 92 Blackmar-Diemer Gambit: Ryder Gambit 1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.f3 exf3 5.Qxf3
C89 92 Ruy Lopez: Marshall Attack, Re3 variation 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d5 9.exd5 Nxd5 10.Nxe5 Nxe5 11.Rxe5 c6 12.Bxd5 cxd5 13.d4 Bd6 14.Re3
A90 92 Dutch Defense: Nimzo-Dutch Variation, Alekhine Variation 1.d4 f5 2.c4 Nf6 3.g3 e6 4.Bg2 Bb4+ 5.Bd2 Be7
C42 91 Russian Game: Damiano Variation 1.e4 e5 2.Nf3 Nf6 3.Nxe5 Nxe4
A28 91 English Opening: King's English Variation, Four Knights Variation Bradley Beach Variation 1.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.d4 e4
E23 91 Nimzo-Indian Defense: Spielmann Variation, Karlsbad Variation 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qb3 c5 5.dxc5 Nc6 6.Nf3 Ne4 7.Bd2 Nxd2
A45 90 System: Canard Formation 1.d4 Nf6 2.f4
C45 90 Scotch Game: Horwitz Attack 1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Qh4 5.Nb5
A57 90 Benko Gambit: Declined, Bishop Attack 1.d4 Nf6 2.c4 c5 3.d5 b5 4.Bg5
C43 89 Russian Game: Modern Attack, Trifunovic Variation 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Bd6 6.O-O O-O 7.c4 Bxe5
B21 88 Sicilian Defense: Smith-Morra Gambit, Accepted Fianchetto Defense 1.e4 c5 2.d4 cxd4 3.c3 dxc3 4.Nxc3 Nc6 5.Nf3 g6
C55 87 Italian Game: Anti-Fried Liver Defense 1.e4 e5 2.Nf3 Nc6 3.Bc4 h6
C10 87 French Defense: Marshall Variation 1.e4 e6 2.d4 d5 3.Nc3 c5
C89 87 Ruy Lopez: Marshall Attack, Original Marshall Attack 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d5 9.exd5 Nxd5 10.Nxe5 Nxe5 11.Rxe5 Nf6
A00 87 Mieses Opening: Reversed Rat 1.d3 e5
C50 87 Italian Game: Rousseau Gambit 1.e4 e5 2.Nf3 Nc6 3.Bc4 f5
C42 85 Russian Game: Cochrane Gambit, Center Variation 1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nxf7 Kxf7 5.d4
C57 84 Caro-Kann Defense: Classical Variation, Seirawan Variation 1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Bf5 5.Ng3 Bg6 6.h4 h6 7.Nf3 Nd7 8.h5 Bh7 9.Bd3 Bxd3 10.Qxd3 e6 11.Bd2 Ngf6 12.O-O-O Bd6
C58 84 Italian Game: Two Knights Defense, Colman Variation 1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 d5 5.exd5 Na5 6.Bb5+ c6 7.dxc6 bxc6 8.Qf3 Rb8
C56 84 Italian Game: Scotch Gambit, Max Lange Attack Spielmann Defense 1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d4 exd4 5.O-O Bc5 6.e5 Ng4
C20 82 King Pawn Game: Macleod Attack 1.e4 e5 2.c3
A00 81 Clemenz Opening 1.h3
B21 80 Sicilian Defense: Smith-Morra Gambit, Declined Dubois Variation 1.e4 c5 2.d4 cxd4 3.c3 d3 4.c4
B12 80 Caro-Kann Defense: Maroczy Variation, Maroczy Gambit 1.e4 c6 2.d4 d5 3.f3 dxe4 4.fxe4 e5 5.Nf3 exd4 6.Bc4
C01 80 French Defense: Winawer Variation, Exchange Variation Canal Attack 1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.exd5 exd5 5.Bd3 Ne7 6.Qh5
C52 80 Italian Game: Evans Gambit, Mieses Defense 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 5.c3 Ba5 6.d4 exd4 7.O-O Nge7
A80 80 Dutch Defense: Kmoch Attack 1.d4 f5 2.Qd3
C42 79 Russian Game: Damiano Variation, Kholmov Gambit 1.e4 e5 2.Nf3 Nf6 3.Nxe5 Nxe4 4.Qe2 Qe7
D47 79 Semi-Slav Defense: Meran Variation, Wade Variation Kaidanov Gambit 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Bd3 Bb7 9.e4 b4 10.Na4 c5 11.e5 Nd5 12.O-O cxd4 13.Nxd4
D00 78 Blackmar-Diemer Gambit: Euwe Defense 1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.f3 exf3 5.Nf3 e6
B18 78 Caro-Kann Defense: Classical Variation, Maroczy Attack 1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Bf5 5.Ng3 Bg6 6.f4
B02 78 Alekhine Defense: Spielmann Gambit 1.e4 Nf6 2.Nc3 d5 3.e5 Nfd7 4.e6
C30 78 King's Gambit: Declined, Miles Defense 1.e4 e5 2.f4 Nc6 3.Nf3 f5
D44 78 Semi-Slav Defense: Botvinnik System, Alatortsev System 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.Bg5 dxc4 6.e4 b5 7.e5 h6 8.Bh4 g5 9.Nxg5 Nd5
D31 77 Queen's Gambit Refused: Baltic Defense, Argentinian Gambit 1.d4 d5 2.c4 Bf5 3.cxd5 Bxb1 4.Qa4+ c6 5.dxc6 Nxc6
D07 77 Queen's Gambit Refused: Chigorin Defense, Main Line Alekhine Variation 1.d4 d5 2.c4 Nc6 3.Nf3 Bg4 4.Qa4
C00 76 Rat Defense: Small Center Defense 1.e4 d6 2.d4 e6
C39 76 King's Gambit: Accepted, Kieseritsky Gambit Kolisch Defense 1.e4 e5 2.f4 exf4 3.Nf3 g5 4.h4 g4 5.Ne5 d6
A22 75 English Opening: King's English Variation, Bellon Gambit 1.c4 e5 2.Nc3 Nf6 3.Nf3 e4 4.Ng5 b5
C44 75 Ponziani Opening: Steinitz Variation 1.e4 e5 2.Nf3 Nc6 3.c3 d5 4.Qa4 f6
D66 74 Queen's Gambit Declined: Orthodox Defense, Fianchetto Variation 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 Nbd7 7.Rc1 c6 8.Bd3 dxc4 9.Bxc4 b5
B15 74 Caro-Kann Defense: Von Hennig Gambit 1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Bc4
C27 74 Vienna Game: Stanley Variation, Frankenstein-Dracula Variation 1.e4 e5 2.Nc3 Nf6 3.Bc4 Nxe4 4.Qh5 Nd6 5.Bb3 Nc6 6.Nb5 g6 7.Qf3 f5 8.Qd5 Qe7 9.Nxc7+ Kd8 10.Nxa8 b6
B10 74 Caro-Kann Defense: Euwe Attack 1.e4 c6 2.b3
C60 72 Ruy Lopez: Schleimann Defense, Jaenisch Gambit Accepted 1.e4 e5 2.Nf3 Nc6 3.Bb5 f5 4.exf5
B27 71 Sicilian Defense: Quinteros Variation 1.e4 c5 2.Nf3 Qc7
B58 71 Sicilian Defense: Boleslavsky Variation, Louma Variation 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Be2 e5 7.Nxc6
C45 70 Scotch Game: Classical Variation, Blackburne Attack 1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Bc5 5.Be3 Qf6 6.c3 Nge7 7.Qd2
C02 69 French Defense: Advance Variation, Nimzowitsch Gambit 1.e4 e6 2.d4 d5 3.e5 c5 4.Qg4 cxd4 5.Nf3
B22 69 Sicilian Defense: Alapin Variation, Sherzer Variation 1.e4 c5 2.c3 Nf6 3.e5 Nd5 4.d4 e6 5.Nf3 Nc6
C39 69 King's Gambit: Accepted, Kieseritsky Gambit Rubinstein Variation 1.e4 e5 2.f4 exf4 3.Nf3 g5 4.h4 g4 5.Ne5 Nf6 6.d4
C70 68 Ruy Lopez: Morphy Defense, Graz Variation 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 b5 5.Bb3 Bc5
C30 68 King's Gambit: Declined, Keene Defense 1.e4 e5 2.f4 Qh4+ 3.g3 Qe7
A59 67 Benko Gambit: Accepted, Yugoslav with Bxf1 and Nge2 1.d4 Nf6 2.c4 c5 3.d5 b5 4.cxb5 a6 5.bxa6 Bxa6 6.Nc3 d6 7.e4 Bxf1 8.Kxf1 g6 9.Nge2
C02 67 French Defense: Advance Variation, Extended Bishop Swap 1.e4 e6 2.d4 d5 3.e5 Bd7
B77 67 Sicilian Defense: Dragon, Yugoslav attack, Byrne Variation 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.f3 O-O 8.Qd2 Nc6 9.Bc4 a5
C57 66 Italian Game: Two Knights Defense, Traxler Counterattack Knight sac line 1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 Bc5 5.Nxf7
A57 66 Benko Gambit: Declined, Pseudo-Saemisch 1.d4 Nf6 2.c4 c5 3.d5 b5 4.f3
C41 66 Philidor Defense: Philidor Countergambit, Zukertort Variation 1.e4 e5 2.Nf3 d6 3.d4 f5 4.Nc3
A00 66 Grob Opening: Keene Defense 1.g4 d5 2.h3 e5 3.Bg2 c6
C56 66 Italian Game: Scotch Gambit, Anderssen Attack Main Line 1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d4 exd4 5.O-O Nxe4 6.Re1 d5 7.Bxd5 Qxd5 8.Nc3 Qa5 9.Nxe4 Be6 10.Bd2 Qd5 11.Bg5
C44 66 Ponziani Opening: Caro Gambit 1.e4 e5 2.Nf3 Nc6 3.c3 d5 4.Qa4 Bd7
C59 65 Italian Game: Two Knights Defense, Polerio Defense Goering Variation 1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 d5 5.exd5 Na5 6.Bb5+ c6 7.dxc6 bxc6 8.Be2 h6 9.Nf3 e4 10.Ne5 Qc7
C13 64 French Defense: Classical Variation, Richter Attack 1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Be7 5.Bxf6 Bxf6 6.e5 Be7 7.Qg4
C57 63 Italian Game: Two Knights Defense, Fritz, Gruber Variation 1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 d5 5.exd5 Nd4 6.c3 b5 7.Bf1 Nxd5 8.Ne4
B33 62 Sicilian Defense: Lasker-Pelikan Variation, Exchange Variation 1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e5 6.Nxc6
C31 62 King's Gambit: Falkbeer Countergambit, Blackburne Attack 1.e4 e5 2.f4 d5 3.Nf3
B02 61 Alekhine Defense: Steiner Variation 1.e4 Nf6 2.e5 Nd5 3.c4 Nb6 4.b3
B28 61 Sicilian Defense: O'Kelly Variation, Maroczy Bind Geller Line 1.e4 c5 2.Nf3 a6 3.c4 Nc6 4.d4 cxd4 5.Nxd4 e5
C00 60 French Defense: Alapin Gambit 1.e4 e6 2.d4 d5 3.Be3
B04 60 Alekhine Defense: Modern Variation, Alekhine Gambit 1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.Nf3 Bg4 5.c4 Nb6 6.Be2
B80 58 Sicilian Defense: Scheveningen Variation, Vitolins Variation 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Bb5+
B57 58 Sicilian Defense: Magnus Smith trap 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bc4 g6 7.Nxc6 bxc6 8.e5
C41 58 Philidor Defense: Morphy Gambit 1.e4 e5 2.Nf3 d6 3.d4 exd4 4.Bc4
B22 58 Sicilian Defense: Alapin Variation, Barmen Defense Milner-Barry Attack 1.e4 c5 2.c3 d5 3.exd5 Qxd5 4.d4 cxd4 5.cxd4 Nc6 6.Nf3 e5 7.Nc3 Bb4 8.Be2
C33 58 King's Gambit: Accepted, Bishop's Gambit Bledow Countergambit 1.e4 e5 2.f4 exf4 3.Bc4 d5 4.Bxd5 Nf6
B28 57 Sicilian Defense: O'Kelly Variation, Normal System Taimanov Line 1.e4 c5 2.Nf3 a6 3.d4 cxd4 4.Nxd4 e5
C00 57 French Defense: Steinitz Attack 1.e4 e6 2.e5
C13 57 French Defense: Classical Variation, Frankfurt Variation 1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Be7 5.e5 Ng8 6.Be3 b6
B21 56 Sicilian Defense: Morphy Gambit, Andreaschek Gambit 1.e4 c5 2.d4 cxd4 3.Nf3 e5 4.c3
A43 55 Benoni Defense: Benoni Gambit, Schlenker Defense 1.d4 c5 2.dxc5 Na6
B00 54 Borg Defense 1.e4 g5
C40 54 Latvian Gambit: Mayet Attack, Poisoned Pawn Variation 1.e4 e5 2.Nf3 f5 3.Bc4 fxe4 4.Nxe5 Qg5 5.d4 Qxg2
A01 53 Nimzo-Larsen Attack: Dutch Variation 1.b3 f5
C24 53 Bishop's Opening: Urusov Gambit, Keidansky Gambit 1.e4 e5 2.Bc4 Nf6 3.d4 exd4 4.Nf3 Nxe4 5.Qxd4
D02 53 Queen's Gambit Refused: Baltic Defense, Queen Attack 1.d4 d5 2.c4 Bf5 3.Qb3
A81 53 Dutch Defense: Leningrad Variation, Karlsbad Variation 1.d4 f5 2.g3 g6 3.Bg2 Bg7 4.Nh3
C48 52 Four Knights Game: Ranken Variation 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 a6 5.Bxc6
C20 52 King Pawn Game: Alapin Opening 1.e4 e5 2.Ne2
C40 51 Latvian Gambit: Fraser Defense 1.e4 e5 2.Nf3 f5 3.Nxe5 Nc6
B45 51 Sicilian Defense: Paulsen Variation, American Attack 1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 Nf6 6.Ndb5 Bb4 7.Nd6+
A51 51 Budapest Defense: Fajarowicz - Steiner Variation 1.d4 Nf6 2.c4 e5 3.dxe5 Ne4 4.Qc2
C40 51 Latvian Gambit: Mlotkowski Variation 1.e4 e5 2.Nf3 f5 3.Nc3
A82 51 Dutch Defense: Staunton Gambit, Tartakower Variation 1.d4 f5 2.e4 fxe4 3.Nc3 Nf6 4.g4
B01 51 Scandinavian Defense: Grünfeld Variation 1.e4 d5 2.exd5 Qxd5 3.Nc3 Qa5 4.d4 Nf6 5.Nf3 Bf5 6.Ne5 c6 7.g4
C62 51 Ruy Lopez: Steinitz Defense, Nimzowitsch Attack 1.e4 e5 2.Nf3 Nc6 3.Bb5 d6 4.d4 Bd7 5.Nc3 Nf6 6.Bxc6
C55 50 Italian Game: Two Knights Defense 1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d4 Nxe4
D20 50 Queen's Gambit Accepted: Accelerated Mannheim Variation 1.d4 d5 2.c4 dxc4 3.Qa4+
D01 50 Queen Pawn Game: Veresov Atack, Boyce Defense 1.d4 d5 2.Nc3 Nf6 3.Bg5 Ne4
B21 50 Sicilian Defense: Smith-Morra Gambit, Declined Center Formation 1.e4 c5 2.d4 cxd4 3.c3 e5
C40 49 Elephant Gambit: Paulsen Countergambit 1.e4 e5 2.Nf3 d5 3.exd5 e4
C47 49 Four Knights: Scotch Variation, Belgrade Gambit Modern Defense 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.d4 exd4 5.Nd5 Nxe4 6.Qe2 f5
C20 48 Portuguese Opening 1.e4 e5 2.Bb5
C29 48 Vienna Game: Vienna Gambit, Kaufmann Variation 1.e4 e5 2.Nc3 Nf6 3.f4 d5 4.fxe5 Nxe4 5.Nf3 Bg4 6.Qe2
D11 48 Slav Defense: Bonet Gambit 1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Bg5
C27 48 Vienna Game: Stanley Variation, Alekhine Variation 1.e4 e5 2.Nc3 Nf6 3.Bc4 Nxe4 4.Qh5 Nd6 5.Bb3 Be7 6.Nf3 Nc6 7.Nxe5
A00 47 Polish Opening: Baltic Defense 1.b4 d5 2.Bb2 Bf5
A57 47 Benko Gambit: Nescafe Frappe attack 1.d4 Nf6 2.c4 c5 3.d5 b5 4.cxb5 a6 5.Nc3 axb5 6.e4 b4 7.Nb5 d6 8.Bc4
A00 46 Polish Opening: Bugayev Advance Variation 1.b4 e5 2.Bb2 f6 3.b5
C38 46 King's Gambit: Accepted, Hanstein Gambit 1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 Bg7 5.O-O
C41 46 Philidor Defense: Steinitz Variation 1.e4 e5 2.Nf3 d6 3.Bc4 Be7 4.c3
D00 46 Queen Pawn Opening: Veresov Opening, Richter Attack 1.d4 d5 2.Nc3 Nf6 3.f3
C68 46 Ruy Lopez: Exchange Variation, Alekhine Variation 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6 dxc6 5.d4 exd4 6.Qxd4 Qxd4 7.Nxd4 Bd6
C47 45 Four Knights Game: Italian Variation, Noa Gambit 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bc4 Nxe4 5.Bxf7+
C40 45 Elephant Gambit: Maroczy Gambit 1.e4 e5 2.Nf3 d5 3.exd5 Bd6
D00 44 Blackmar-Diemer Gambit: Von Popiel Gambit 1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.Bg5
B20 44 Sicilian Defense: Wing Gambit, Abrahams Variation 1.e4 c5 2.b4 cxb4 3.Bb2
B21 44 Sicilian Defense: Smith-Morra Gambit, Accepted Pin Defense 1.e4 c5 2.d4 cxd4 3.c3 dxc3 4.Nxc3 Nc6 5.Nf3 e6 6.Bc4 Bb4
A06 44 Zukertort Opening: Tennison Gambit 1.Nf3 d5 2.e4
B15 44 Caro-Kann Defense: Rasa-Studier Gambit 1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.f3
C33 44 King's Gambit: Accepted, Tartakower Gambit 1.e4 e5 2.f4 exf4 3.Be2
C56 43 Italian Game: Scotch Gambit, Canal Variation 1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d4 exd4 5.O-O Nxe4 6.Re1 d5 7.Nc3
A00 42 Polish Opening: German Defense 1.b4 d5 2.Bb2 Qd6
C57 42 Italian Game: Two Knights Defense, Lolli Attack 1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 d5 5.exd5 Nxd5 6.d4
C17 39 French Defense: Winawer Variation, Advance Variation 1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.a3 cxd4 6.axb4 dxc3 7.Nf3
C14 39 French Defense: Classical Variation, Pollock Variation 1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Be7 5.e5 Nfd7 6.Bxe7 Qxe7 7.Qg4
A38 39 English Opening: Symmetrical Variation, Double Fianchetto 1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.b3
A00 38 Van Geet Opening: Gruenfeld Defense 1.Nc3 d5 2.e4 dxe4 3.Nxe4 e5
B21 38 Sicilian Defense: Smith-Morra Gambit, Accepted Morphy Defense 1.e4 c5 2.d4 cxd4 3.c3 dxc3 4.Nxc3 Nc6 5.Nf3 e6 6.Bc4 Bc5
B40 37 Sicilian Defense: Pin Variation, Jaffe Variation 1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Bb4 6.Bd3 e5
C12 37 French Defense: MacCutcheon Variation, Tartakower Variation 1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Bb4 5.e5 h6 6.Bd2 Nfd7
C32 37 King's Gambit: Falkbeer Countergambit, Charousek Gambit Keres Variation 1.e4 e5 2.f4 d5 3.exd5 e4 4.d3 Nf6 5.Nd2
C44 36 Scotch Game: Scotch Gambit, London Defense 1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Bc4 Bb4+
B01 36 Scandinavian Defense: Kiel Variation 1.e4 d5 2.exd5 Nf6 3.d4 Nxd5 4.c4 Nb4
B22 35 Sicilian Defense: Alapin Variation, Barmen Defense Endgame Variation 1.e4 c5 2.c3 d5 3.exd5 Qxd5 4.d4 cxd4 5.cxd4 Nc6 6.Nf3 Bg4 7.Nc3 Bxf3 8.gxf3 Qxd4 9.Qxd4 Nxd4
C01 34 French Defense: Mediterranean Defense 1.e4 e6 2.d4 Nf6
D00 34 Blackmar-Diemer Gambit: Bogoljubow Variation, Studier Attack 1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.f3 exf3 5.Nxf3 g6 6.Bc4 Bg7 7.O-O O-O 8.Qe1
B01 33 Scandinavian Defense: Main Lines, Leonhardt Gambit 1.e4 d5 2.exd5 Qxd5 3.Nc3 Qa5 4.b4
C41 32 Philidor Defense: Lion Variation, Bishop Sac 1.e4 e5 2.Nf3 d6 3.d4 Nf6 4.Nc3 Nbd7 5.Bc4 Be7 6.Bxf7+
A80 31 Dutch Defense: Janzen-Korchnoi Gambit 1.d4 f5 2.h3 Nf6 3.g4
C44 30 Scotch Game: Scotch Gambit, Saratt Variation 1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Bc4 Bc5 5.Ng5
A40 30 Englund Gambit: Declined, Reversed French 1.d4 e5 2.e3
C32 29 King's Gambit: Falkbeer Countergambit, Charousek Gambit Main Line 1.e4 e5 2.f4 d5 3.exd5 e4 4.d3 Nf6 5.dxe4 Nxe4 6.Nf3 Bc5 7.Qe2 Bf5
C34 28 King's Gambit: Accepted, MacLeod Defense 1.e4 e5 2.f4 exf4 3.Nf3 Nc6
C40 28 Latvian Gambit: Mayet Attack, Polerio-Svedenborg Variation 1.e4 e5 2.Nf3 f5 3.Bc4 fxe4 4.Nxe5 d5
A00 28 Grob Opening: Grob Gambit, Fritz Gambit 1.g4 d5 2.Bg2 Bxg4 3.c4
C20 27 King Pawn Game: Wayward Queen Attack 1.e4 e5 2.Qh5
C41 27 Philidor Defense: Alapin-Blackburne Gambit 1.e4 e5 2.Nf3 d6 3.d4 Bg4 4.dxe5 Nd7
C00 26 French Defense: Diemer-Duhm Gambit 1.e4 e6 2.d4 d5 3.c4 dxe4
E00 26 Amar Opening 1.Nh3
D00 26 Blackmar-Diemer Gambit: Zeller Defense 1.d4 d5 2.e4 dxe4 3.Nc3 Bf5
B13 25 Caro-Kann Defense: Panov Attack, Gunderam Attack 1.e4 c6 2.d4 d5 3.exd5 cxd5 4.c4 Nf6 5.c5
C54 23 Italian Game: Classical Variation, Greco Gambit Greco Variation 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Nf6 5.d4 exd4 6.cxd4 Bb4+ 7.Nc3 Nxe4 8.O-O Nxc3
A00 23 Kadas Opening 1.h4
C21 23 Danish Gambit: Accepted, Schlechter Defense 1.e4 e5 2.d4 exd4 3.c3 dxc3 4.Bc4 cxb2 5.Bxb2 d5
D00 22 Blackmar-Diemer Gambit: Declined, Langeheinecke Defense 1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.f3 e3
D32 21 Tarrasch Defense: Von Hennig Gambit 1.d4 d5 2.c4 e6 3.Nc3 c5 4.cxd5 cxd4 5.Qxd4 Nc6 6.Qd1 exd5 7.Qxd5 Be6
C40 20 King Pawn Game: Damiano Defense 1.e4 e5 2.Nf3 f6
C50 20 Italian Game: Hungarian Defense, Tartakower Variation 1.e4 e5 2.Nf3 Nc6 3.Bc4 Be7 4.d4 exd4 5.c3 Nf6 6.e5 Ne4
C33 18 King's Gambit: Accepted, Polerio Gambit 1.e4 e5 2.f4 exf4 3.d4
B32 12 Sicilian Defense: Franco-Scilian Variation 1.e4 c5 2.Nf3 Nc6 3.d4 e6
C57 11 Italian Game: Two Knights Defense, Fried Liver Attack 1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 d5 5.exd5 Nxd5 6.Nxf7
C44 11 Scotch gambit 1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Bc4 Bb4+ 5.c3 dxc3 6.bxc3
C44 10 Scotch Game: Lolli Variation 1.e4 e5 2.Nf3 Nc6 3.d4 Nxd4
C50 9 Italian Game: Schilling-Kostic Gambit 1.e4 e5 2.Nf3 Nc6 3.Bc4 Nd4
C55 9 Italian Game: Scotch Gambit, Declined 1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d4 d6
B00 8 Caro-Kann Defense: Hillbilly Attack 1.e4 c6 2.Bc4
C40 4 King Pawn Game: Busch-Gass Gambit 1.e4 e5 2.Nf3 Bc5
C62 2 Ruy Lopez: Steinitz Defense, Center Gambit 1.e4 e5 2.Nf3 Nc6 3.Bb5 d6 4.d4 exd4 5.O-O
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