Chess openings / Sicilian Defense Sicilian Defense The Sicilian Defense starts 1. e4 c5. The opening book names 326 variations of it, under ECO B20 to B99.
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All 326 Sicilian Defense variations B20 Amazon Attack1. e4 c5 2. Qg4 B20 Big Clamp Formation1. e4 c5 2. d3 Nc6 3. c3 d6 4. f4 B20 Bowdler Attack1. e4 c5 2. Bc4 B20 Brick Variation1. e4 c5 2. Nh3 B20 Czerniak Attack1. e4 c5 2. b3 B20 Czerniak Attack, Queen Fianchetto Variation1. e4 c5 2. b3 b6 B20 Euwe Attack, Prins Gambit1. e4 c5 2. b3 d5 3. Bb2 B20 Gloria Variation1. e4 c5 2. c4 d6 3. Nc3 Nc6 4. g3 h5 B20 Grob Variation1. e4 c5 2. g4 B20 Keres Variation1. e4 c5 2. Ne2 B20 King David's Opening1. e4 c5 2. Ke2 B20 Kronberger Variation1. e4 c5 2. Na3 B20 Kronberger Variation, Nemeth Gambit1. e4 c5 2. Na3 Nc6 3. d4 cxd4 4. Bc4 B20 Lasker-Dunne Attack1. e4 c5 2. g3 B20 Mengarini Variation1. e4 c5 2. a3 B20 Myers Attack, with a41. e4 c5 2. a4 B20 Myers Attack, with h41. e4 c5 2. h4 B20 Staunton-Cochrane Variation1. e4 c5 2. c4 B20 Wing Gambit1. e4 c5 2. b4 B20 Wing Gambit, Abrahams Variation1. e4 c5 2. b4 cxb4 3. Bb2 B20 Wing Gambit, Carlsbad Variation1. e4 c5 2. b4 cxb4 3. a3 bxa3 B20 Wing Gambit, Marienbad Variation1. e4 c5 2. b4 cxb4 3. a3 d5 4. exd5 Qxd5 5. Bb2 B20 Wing Gambit, Marshall Variation1. e4 c5 2. b4 cxb4 3. a3 B20 Wing Gambit, Nanu Gambit1. e4 c5 2. b4 cxb4 3. a3 d5 4. exd5 Qxd5 5. Nf3 e5 6. c4 Qe6 7. Bd3 B20 Wing Gambit, Romanian Defense1. e4 c5 2. b4 cxb4 3. a3 d5 4. exd5 Qxd5 5. Nf3 e5 6. Bb2 Nc6 7. c4 Qe6 B20 Wing Gambit, Santasiere Variation1. e4 c5 2. b4 cxb4 3. c4 B21 Coles Sicilian Gambit1. e4 c5 2. d4 cxd4 3. Qxd4 Nc6 4. Qd1 Nf6 5. Bc4 B21 Halasz Gambit1. e4 c5 2. d4 cxd4 3. f4 B21 McDonnell Attack1. e4 c5 2. f4 B21 McDonnell Attack, Tal Gambit1. e4 c5 2. f4 d5 3. exd5 Nf6 B21 McDonnell Attack, Toilet Variation1. e4 c5 2. f4 d5 3. Nc3 B21 Morphy Gambit1. e4 c5 2. d4 cxd4 3. Nf3 B21 Morphy Gambit, Andreaschek Gambit1. e4 c5 2. d4 cxd4 3. Nf3 e5 4. c3 B21 Smith-Morra Gambit1. e4 c5 2. d4 (also reached by 1 other move order) B21 Smith-Morra Gambit Accepted1. e4 c5 2. d4 cxd4 3. c3 dxc3 B21 Smith-Morra Gambit Accepted, Chicago Defense1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Bc4 e6 6. Nf3 d6 7. O-O a6 8. Qe2 b5 9. Bb3 Ra7 (also reached by 1 other move order) B21 Smith-Morra Gambit Accepted, Classical Formation1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Nf3 d6 6. Bc4 a6 7. O-O Nf6 B21 Smith-Morra Gambit Accepted, Danish Variation1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nf3 B21 Smith-Morra Gambit Accepted, Fianchetto Defense1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Nf3 g6 B21 Smith-Morra Gambit Accepted, Finegold Defense1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 e6 5. Nf3 d6 6. Bc4 a6 7. O-O Be7 8. Qe2 Nf6 B21 Smith-Morra Gambit Accepted, Kan Formation1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 e6 5. Nf3 a6 B21 Smith-Morra Gambit Accepted, Larsen Defense1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Nf3 e6 6. Bc4 Qc7 7. Qe2 a6 8. O-O Bd6 B21 Smith-Morra Gambit Accepted, Morphy Defense1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Nf3 e6 6. Bc4 Bc5 B21 Smith-Morra Gambit Accepted, Morphy Defense Deferred1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Nf3 e6 6. Bc4 a6 7. O-O b5 8. Bb3 Bc5 B21 Smith-Morra Gambit Accepted, Paulsen Formation1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Nf3 e6 6. Bc4 a6 B21 Smith-Morra Gambit Accepted, Pin Defense1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Nf3 e6 6. Bc4 Bb4 B21 Smith-Morra Gambit Accepted, Scheveningen Formation1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Nf3 d6 6. Bc4 e6 B21 Smith-Morra Gambit Accepted, Siberian Variation1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Nf3 e6 6. Bc4 Qc7 B21 Smith-Morra Gambit Accepted, Siberian Variation, Siberian Trap1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Nf3 e6 6. Bc4 Qc7 7. Qe2 Nf6 8. O-O Ng4 B21 Smith-Morra Gambit Accepted, Sozin Formation1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Bc4 e6 6. Nf3 d6 7. O-O a6 8. Qe2 b5 B21 Smith-Morra Gambit Accepted, Taimanov Formation1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 e6 5. Bc4 a6 6. Nf3 Ne7 B21 Smith-Morra Gambit Declined, Alapin Formation1. e4 c5 2. d4 cxd4 3. c3 Nf6 B21 Smith-Morra Gambit Declined, Center Formation1. e4 c5 2. d4 cxd4 3. c3 e5 B21 Smith-Morra Gambit Declined, Dubois Variation1. e4 c5 2. d4 cxd4 3. c3 d3 4. c4 B21 Smith-Morra Gambit Declined, Push Variation1. e4 c5 2. d4 cxd4 3. c3 d3 B21 Smith-Morra Gambit Declined, Scandinavian Formation1. e4 c5 2. d4 cxd4 3. c3 d5 B21 Smith-Morra Gambit Declined, Wing Formation1. e4 c5 2. d4 cxd4 3. c3 Qa5 B22 Alapin Variation1. e4 c5 2. c3 B22 Alapin Variation, Anti-Alapin Gambit1. e4 c5 2. c3 d5 3. exd5 Nf6 B22 Alapin Variation, Barmen Defense1. e4 c5 2. c3 d5 3. exd5 Qxd5 (also reached by 2 other move orders) B22 Alapin Variation, Barmen Defense, Central Exchange1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 cxd4 5. cxd4 Nc6 6. Nf3 Bg4 B22 Alapin Variation, Barmen Defense, Endgame Variation1. 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 B22 Alapin Variation, Barmen Defense, Milner-Barry Attack1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 Nc6 5. Nf3 cxd4 6. cxd4 e5 7. Nc3 Bb4 8. Be2 B22 Alapin Variation, Barmen Defense, Modern Line1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 Nf6 5. Nf3 Bg4 B22 Alapin Variation, Smith-Morra Declined1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. d4 cxd4 B22 Alapin Variation, Stoltz Attack1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. Nf3 Nc6 5. Bc4 Nb6 6. Bb3 B22 Alapin Variation, Stoltz Attack, Ivanchuk Line1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. Nf3 Nc6 5. Bc4 Nb6 6. Bb3 c4 7. Bc2 Qc7 8. Qe2 g5 B22 Delayed Alapin Variation1. e4 c5 2. Nf3 e6 3. c3 d5 4. exd5 Qxd5 5. d4 Nf6 (also reached by 1 other move order) B22 Heidenfeld Variation1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. Nf3 Nc6 5. Na3 B23 Closed1. e4 c5 2. Nc3 (also reached by 7 other move orders) B23 Closed, Carlsen Variation1. e4 c5 2. Nc3 d6 3. d4 cxd4 4. Qxd4 Nc6 5. Qd2 B23 Closed, Chameleon Variation1. e4 c5 2. Nc3 Nc6 3. Nge2 B23 Closed, Grob Attack1. e4 c5 2. Nc3 Nc6 3. g4 B23 Closed, Korchnoi Defense1. e4 c5 2. Nc3 e6 3. g3 d5 B23 Closed, Portland Attack1. e4 c5 2. Nc3 Nc6 3. d3 g6 4. g4 B23 Closed, Traditional1. e4 c5 2. Nc3 Nc6 B23 Grand Prix Attack1. e4 c5 2. Nc3 Nc6 3. f4 B23 Grand Prix Attack, Schofman Variation1. e4 c5 2. Nc3 Nc6 3. f4 g6 4. Nf3 Bg7 5. Bc4 e6 6. f5 B24 Closed, Fianchetto Variation1. e4 c5 2. Nc3 Nc6 3. g3 B24 Closed, Smyslov Variation1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 e6 6. Be3 Nd4 7. Nce2 B25 Closed, Botvinnik Defense, Edge Variation1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6 6. f4 e5 7. Nh3 Nge7 B25 Closed, Botvinnik Defense, with Nge21. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6 6. Nge2 e5 B25 Closed, Botvinnik Defense, with f41. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6 6. f4 e5 B27 Acton Extension1. e4 c5 2. Nf3 g6 3. c4 Bh6 B27 Brussels Gambit1. e4 c5 2. Nf3 f5 B27 Bücker Variation1. e4 c5 2. Nf3 h6 B27 Double-Dutch Gambit1. e4 c5 2. Nf3 f5 3. exf5 Nh6 B27 Frederico Variation1. e4 c5 2. Nf3 g6 3. d4 f5 B27 Hyperaccelerated Dragon1. e4 c5 2. Nf3 g6 (also reached by 1 other move order) B27 Hyperaccelerated Pterodactyl1. e4 c5 2. Nf3 g6 3. d4 Bg7 B27 Hyperaccelerated Pterodactyl, Exchange Variation1. e4 c5 2. Nf3 g6 3. d4 Bg7 4. dxc5 Qa5+ 5. Nc3 Bxc3+ 6. bxc3 Qxc3+ B27 Jalalabad Variation1. e4 c5 2. Nf3 e5 B27 Katalimov Variation1. e4 c5 2. Nf3 b6 B27 Mongoose Variation1. e4 c5 2. Nf3 Qa5 B27 Polish Gambit1. e4 c5 2. Nf3 b5 B27 Quinteros Variation1. e4 c5 2. Nf3 Qc7 B28 O'Kelly Variation1. e4 c5 2. Nf3 a6 B28 O'Kelly Variation, Aronin System1. e4 c5 2. Nf3 a6 3. Be2 B28 O'Kelly Variation, Kieseritzky System1. e4 c5 2. Nf3 a6 3. b3 B28 O'Kelly Variation, Maróczy Bind1. e4 c5 2. Nf3 a6 3. c4 B28 O'Kelly Variation, Maróczy Bind, Paulsen Line1. e4 c5 2. Nf3 a6 3. c4 e6 B28 O'Kelly Variation, Maróczy Bind, Robatsch Line1. e4 c5 2. Nf3 a6 3. c4 d6 B28 O'Kelly Variation, Normal System1. e4 c5 2. Nf3 a6 3. d4 B28 O'Kelly Variation, Normal System, Cortlever Gambit1. e4 c5 2. Nf3 a6 3. d4 cxd4 4. Bc4 B28 O'Kelly Variation, Normal System, Smith-Morra Line1. e4 c5 2. Nf3 a6 3. d4 cxd4 4. c3 B28 O'Kelly Variation, Normal System, Taimanov Line1. e4 c5 2. Nf3 a6 3. d4 cxd4 4. Nxd4 e5 B28 O'Kelly Variation, Normal System, Zagorovsky Line1. e4 c5 2. Nf3 a6 3. d4 cxd4 4. Qxd4 B28 O'Kelly Variation, Quiet System1. e4 c5 2. Nf3 a6 3. d3 B28 O'Kelly Variation, Réti System1. e4 c5 2. Nf3 a6 3. g3 B28 O'Kelly Variation, Venice System1. e4 c5 2. Nf3 a6 3. c3 B28 O'Kelly Variation, Venice System, Barcza Line1. e4 c5 2. Nf3 a6 3. c3 Nf6 B28 O'Kelly Variation, Venice System, Gambit Line1. e4 c5 2. Nf3 a6 3. c3 d5 4. exd5 Nf6 B28 O'Kelly Variation, Venice System, Ljubojevic Line1. e4 c5 2. Nf3 a6 3. c3 b5 B28 O'Kelly Variation, Venice System, Steiner Line1. e4 c5 2. Nf3 a6 3. c3 d6 B28 O'Kelly Variation, Wing Gambit1. e4 c5 2. Nf3 a6 3. b4 B28 O'Kelly Variation, Yerevan System1. e4 c5 2. Nf3 a6 3. Nc3 B29 Nimzowitsch Variation1. e4 c5 2. Nf3 Nf6 B29 Nimzowitsch Variation, Advance Variation1. e4 c5 2. Nf3 Nf6 3. e5 B29 Nimzowitsch Variation, Closed Variation1. e4 c5 2. Nf3 Nf6 3. Nc3 B29 Nimzowitsch Variation, Exchange Variation1. e4 c5 2. Nf3 Nf6 3. e5 Nd5 4. Nc3 Nxc3 B29 Nimzowitsch Variation, Main Line1. e4 c5 2. Nf3 Nf6 3. e5 Nd5 4. Nc3 e6 5. Nxd5 exd5 6. d4 Nc6 B30 Closed, Anti-Sveshnikov Variation1. e4 c5 2. Nf3 Nc6 3. Nc3 e5 B30 Closed, Anti-Sveshnikov Variation, Kharlov-Kramnik Line1. e4 c5 2. Nf3 Nc6 3. Nc3 e5 4. Bc4 Be7 5. d3 d6 6. Nd2 Bg5 B30 Closed, Anti-Sveshnikov Variation, with Nf61. e4 c5 2. Nf3 Nc6 3. Nc3 e5 4. Bc4 Be7 5. d3 Nf6 B30 Closed, Anti-Sveshnikov Variation, with d61. e4 c5 2. Nf3 Nc6 3. Nc3 e5 4. Bc4 Be7 5. d3 d6 B30 Nyezhmetdinov-Rossolimo Attack1. e4 c5 2. Nf3 Nc6 3. Bb5 B30 Nyezhmetdinov-Rossolimo Attack, Brooklyn Retreat Defense1. e4 c5 2. Nf3 Nc6 3. Bb5 Nb8 B30 Nyezhmetdinov-Rossolimo Attack, San Francisco Gambit1. e4 c5 2. Nf3 Nc6 3. Bb5 Na5 4. b4 B30 Old Sicilian1. e4 c5 2. Nf3 Nc6 B30 Portsmouth Gambit1. e4 c5 2. Nf3 Nc6 3. b4 B31 Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 B31 Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation, Gufeld Gambit1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. O-O Bg7 5. c3 e5 6. d4 B31 Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation, Lutikov Gambit1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. O-O Bg7 5. c3 Nf6 6. d4 B31 Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation, Totsky Attack1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. O-O Bg7 5. c3 Nf6 6. Qa4 B31 Nyezhmetdinov-Rossolimo Attack, Gurgenidze Variation1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. O-O Bg7 5. Re1 e5 6. b4 B32 Accelerated Dragon1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 B32 Flohr Variation1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Qc7 B32 Franco-Sicilian Variation1. e4 c5 2. Nf3 Nc6 3. d4 e6 B32 Godiva Variation1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Qb6 B32 Kalashnikov Variation1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e5 5. Nb5 d6 B32 Löwenthal Variation1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e5 B32 Nimzo-American Variation1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 d5 B32 O'Kelly Variation, Maróczy Bind, Geller Line1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 a6 5. c4 e5 B32 Open1. e4 c5 2. Nf3 Nc6 3. d4 (also reached by 3 other move orders) B33 Lasker-Pelikan Variation1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 B33 Lasker-Pelikan Variation, Bird Variation1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6 8. Na3 Be6 B33 Lasker-Pelikan Variation, Exchange Variation1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Nxc6 B33 Lasker-Pelikan Variation, Retreat Variation1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Nf3 B33 Lasker-Pelikan Variation, Schlechter Variation1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Nb3 B33 Lasker-Pelikan Variation, Sveshnikov Variation1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6 8. Na3 b5 (also reached by 1 other move order) B33 Lasker-Pelikan Variation, Sveshnikov Variation, Chelyabinsk Variation1. 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 B33 Lasker-Pelikan Variation, Sveshnikov Variation, Novosibirsk Variation1. 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 B33 Lasker-Pelikan Variation, Sveshnikov Variation, Peresypkin's Sacrifice1. 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 B34 Accelerated Dragon, Exchange Variation1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nxc6 B34 Accelerated Dragon, Modern Variation1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 B35 Accelerated Dragon, Modern Bc4 Variation1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. Bc4 B35 Dragon Variation, Modern Bc4 Variation1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. Bc4 d6 B36 Accelerated Dragon, Maróczy Bind1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. c4 (also reached by 2 other move orders) B36 Accelerated Dragon, Maróczy Bind, Gurgenidze Variation1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. c4 Nf6 6. Nc3 Nxd4 7. Qxd4 d6 B37 Accelerated Dragon, Simagin Variation1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. c4 Bg7 6. Nc2 d6 7. Be2 Nh6 B39 Accelerated Dragon, Maróczy Bind, Breyer Variation1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. c4 Bg7 6. Be3 Nf6 7. Nc3 Ng4 B40 Alapin Variation, Sherzer Variation1. e4 c5 2. Nf3 e6 3. c3 Nf6 4. e5 Nd5 5. d4 Nc6 B40 Delayed Alapin Variation, with e61. e4 c5 2. Nf3 e6 3. c3 B40 Drazic Variation1. e4 c5 2. Nf3 e6 3. d4 a6 B40 French Variation1. e4 c5 2. Nf3 e6 B40 French Variation, Normal1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 B40 French Variation, Open1. e4 c5 2. Nf3 e6 3. d4 cxd4 B40 French Variation, Westerinen Attack1. e4 c5 2. Nf3 e6 3. b3 B40 Gaw-Paw Variation1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Qb6 B40 Kan Variation, Wing Attack, Fianchetto Variation1. e4 c5 2. Nf3 e6 3. Nc3 a6 4. g3 b5 5. d4 cxd4 6. Nxd4 B40 Kramnik Variation1. e4 c5 2. Nf3 e6 3. c4 B40 Kveinis Variation1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Qb6 B40 Marshall Counterattack1. e4 c5 2. Nf3 e6 3. d4 d5 B40 Paulsen-Basman Defense1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Bc5 B40 Pin Variation1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Bb4 B40 Pin Variation, Jaffe Variation1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Bb4 6. Bd3 e5 B40 Pin Variation, Koch Variation1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Bb4 6. e5 B40 Smith-Morra Gambit Deferred1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. c3 B40 Wing Gambit Deferred1. e4 c5 2. Nf3 e6 3. b4 B41 Kan Variation1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 B41 Kan Variation, Maróczy Bind, Bronstein Variation1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. c4 Nf6 6. Nc3 Bb4 7. Bd3 Nc6 (also reached by 1 other move order) B41 Kan Variation, Maróczy Bind, Hedgehog Variation1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. c4 g6 B41 Kan Variation, Maróczy Bind, Réti Variation1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. c4 B42 Kan Variation, Gipslis Variation1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Nf6 6. O-O d6 7. c4 g6 B42 Kan Variation, Modern Variation1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 B42 Kan Variation, Polugaevsky Variation1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Bc5 B42 Kan Variation, Swiss Cheese Variation1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 g6 B43 Kan Variation, Knight Variation1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 B43 Kan Variation, Wing Attack1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 b5 B43 Kan Variation, Wing Attack, Christiansen's Dream1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 b5 6. Bd3 Qb6 7. Be3 Bc5 8. Qg4 B43 Kan Variation, Wing Attack, Spraggett Attack1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 b5 6. Bd3 Qb6 7. Nf3 B44 Taimanov Variation1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 (also reached by 2 other move orders) B44 Taimanov Variation, Gary Gambit1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nb5 d6 6. c4 Nf6 7. N1c3 a6 8. Na3 d5 B44 Taimanov Variation, Modern Line1. 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 B44 Taimanov Variation, Szén Variation1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nb5 B45 Four Knights Variation1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Nf6 B45 Four Knights Variation, American Attack1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Nf6 6. Ndb5 Bb4 7. Nd6+ B45 Four Knights Variation, Cobra Variation1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Nf6 6. Ndb5 Bc5 B45 Four Knights Variation, Exchange Variation1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Nf6 6. Nxc6 B45 Four Knights Variation, Sveshnikov Transfer1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Nf6 6. Ndb5 d6 B47 Taimanov Variation, Bastrikov Variation1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 (also reached by 1 other move order) B47 Taimanov Variation, Bastrikov Variation, Ponomariov Gambit1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. Ndb5 Qb8 7. Be3 a6 8. Bb6 B48 Taimanov Variation, Bastrikov Variation, English Attack1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. Be3 B50 Delayed Alapin Variation, Basman-Palatnik Double Gambit1. 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 B50 Delayed Alapin Variation, Basman-Palatnik Gambit1. e4 c5 2. Nf3 d6 3. c3 Nf6 4. Be2 Nc6 5. d4 cxd4 6. cxd4 Nxe4 B50 Delayed Alapin Variation, with d61. e4 c5 2. Nf3 d6 3. c3 B50 Kopec System1. e4 c5 2. Nf3 d6 3. Bd3 B50 Kotov Gambit1. e4 c5 2. Nf3 d6 3. g3 b5 B50 Modern Variations1. e4 c5 2. Nf3 d6 B50 Modern Variations, Anti-Qxd4 Move Order1. e4 c5 2. Nf3 d6 3. d4 Nf6 B50 Modern Variations, Anti-Qxd4 Move Order Accepted1. e4 c5 2. Nf3 d6 3. d4 Nf6 4. dxc5 Nxe4 B50 Modern Variations, Tartakower1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. c3 B50 Wing Gambit, Deferred Variation1. e4 c5 2. Nf3 d6 3. b4 B51 Moscow Variation1. e4 c5 2. Nf3 d6 3. Bb5+ B51 Moscow Variation, Dorfman Gambit1. e4 c5 2. Nf3 d6 3. Bb5+ Nc6 4. O-O Bd7 5. Qe2 g6 6. e5 B51 Moscow Variation, Moscow Gambit1. e4 c5 2. Nf3 d6 3. Bb5+ Nc6 4. O-O Bd7 5. c3 Nf6 6. Re1 a6 7. Bxc6 Bxc6 8. d4 Bxe4 9. Bg5 B52 Moscow Variation, Haag Gambit1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. O-O Nc6 6. c3 Nf6 7. d4 B52 Moscow Variation, Main Line1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 B52 Moscow Variation, Sokolsky Variation1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. c4 B53 Chekhover Variation1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Qxd4 B53 Chekhover Variation, Zaitsev Defense1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Qxd4 Nc6 5. Bb5 Qd7 B54 Dragon Variation, Accelerated Dragon1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 g6 B54 Modern Variations, Ginsberg Gambit1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Bc4 B54 Modern Variations, Main Line1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 B54 Prins Variation1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. f3 B55 Prins Variation, Venice Attack1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. f3 e5 6. Bb5+ B56 Classical Variation1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 (also reached by 1 other move order) B56 Classical Variation, Fianchetto Variation1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. g3 B56 Kupreichik Variation1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Bd7 B56 Spielmann Variation1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Nde2 B56 Venice Attack1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Bb5+ B57 Classical Variation, Anti-Sozin Variation1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bc4 Qb6 B57 Classical Variation, Sozin Attack1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bc4 B57 Magnus Smith Trap1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bc4 g6 7. Nxc6 bxc6 8. e5 B58 Boleslavsky Variation1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Be2 e5 (also reached by 1 other move order) B58 Boleslavsky Variation, Louma Variation1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 e5 7. Nxc6 B58 Classical Variation, Dragon Transfer1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Be2 Nxd4 7. Qxd4 g6 B60 Richter-Rauzer Variation1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 (also reached by 2 other move orders) B60 Richter-Rauzer Variation, Dragon Variation1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bg5 g6 B60 Richter-Rauzer Variation, Modern Variation1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 Bd7 (also reached by 1 other move order) B62 Richter-Rauzer Variation, Exchange Variation1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Nxc6 B62 Richter-Rauzer Variation, Podebrady Variation1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bg5 e6 7. Nb3 B62 Richter-Rauzer Variation, Vitolins Variation1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Bb5 B63 Richter-Rauzer Variation, Classical Variation1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Qd2 Be7 (also reached by 3 other move orders) B63 Richter-Rauzer Variation, Classical Variation, Kantscher Line1. 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 B63 Richter-Rauzer Variation, Ivanov Variation1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Qd2 Qb6 B63 Richter-Rauzer Variation, Traditional Variation1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Qd2 B65 Richter-Rauzer Variation, Rauzer Attack1. 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 B66 Richter-Rauzer Variation, Neo-Modern Variation, Early Deviations1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Qd2 a6 B67 Richter-Rauzer Variation, Neo-Modern Variation1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bg5 e6 7. Qd2 a6 8. O-O-O Bd7 (also reached by 1 other move order) B69 Richter-Rauzer Variation, Neo-Modern Variation, Nyezhmetdinov Attack1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bg5 e6 7. Qd2 a6 8. O-O-O Bd7 9. f4 Be7 10. Nf3 b5 11. Bxf6 B70 Dragon Variation1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 (also reached by 1 other move order) B70 Dragon Variation, Classical Variation1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be2 (also reached by 4 other move orders) B70 Dragon Variation, Fianchetto Variation1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. g3 B71 Dragon Variation, Levenfish Variation1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. f4 B71 Dragon Variation, Levenfish Variation, Main Line1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. f4 Nbd7 B72 Dragon Variation, Classical Variation, Amsterdam Variation1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 g6 7. Be3 Bg7 8. Qd2 B72 Dragon Variation, Classical Variation, Grigoriev Variation1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 g6 7. Be3 Bg7 8. Qd2 O-O 9. O-O-O B73 Dragon Variation, Classical Variation, Battery Variation1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be2 Bg7 7. O-O O-O 8. Be3 Nc6 9. Qd2 B73 Dragon Variation, Classical Variation, Zollner Gambit1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Be3 Bg7 6. Be2 Nf6 7. Nc3 O-O 8. O-O d6 9. f4 Qb6 10. e5 B74 Dragon Variation, Classical Variation, Alekhine Line1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. Be2 O-O 8. O-O d6 9. Nb3 a5 B74 Dragon Variation, Classical Variation, Bernard Defense1. e4 c5 2. Nf3 g6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 Bg7 7. O-O O-O 8. Be3 Nc6 9. Nb3 Be6 10. f4 Na5 11. f5 Bc4 12. Bd3 Bxd3 13. cxd3 d5 B74 Dragon Variation, Classical Variation, Maróczy Line1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be2 Bg7 7. O-O O-O 8. Be3 Nc6 9. Nb3 Be6 10. f4 Na5 B74 Dragon Variation, Classical Variation, Normal Line1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be2 Bg7 7. O-O O-O 8. Be3 Nc6 9. Nb3 B74 Dragon Variation, Classical Variation, Spielmann Variation1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. Be2 O-O 8. Nb3 d6 9. O-O Be6 10. f4 Na5 11. f5 Bc4 12. Bd3 B74 Dragon Variation, Classical Variation, Stockholm Attack1. e4 c5 2. Nc3 d6 3. f4 Nc6 4. Nf3 g6 5. d4 cxd4 6. Nxd4 Bg7 7. Be3 Nf6 8. Be2 O-O 9. Nb3 Be6 10. O-O Na5 11. f5 Bc4 12. Nxa5 Bxe2 13. Qxe2 Qxa5 14. g4 B74 Dragon Variation, Classical Variation, Tartakower Line1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be2 Bg7 7. O-O O-O 8. Be3 Nc6 9. Nb3 Be6 10. f4 Qc8 B75 Dragon Variation, Yugoslav Attack, Belezky Line1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 Nc6 B75 Dragon Variation, Yugoslav Attack, Early Deviations1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 B75 Dragon Variation, Yugoslav Attack, Hungarian Dragon1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Nc6 7. f3 h5 B76 Dragon Variation, Yugoslav Attack1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 O-O (also reached by 3 other move orders) B76 Dragon Variation, Yugoslav Attack, Modern Line1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 Nc6 8. Qd2 O-O 9. O-O-O B76 Dragon Variation, Yugoslav Attack, Panov Variation1. 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 B77 Dragon Variation, Yugoslav Attack, Byrne Variation1. 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 B77 Dragon Variation, Yugoslav Attack, Czerniak Variation1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 Nc6 8. Qd2 O-O 9. Bc4 Nxd4 10. Bxd4 Be6 (also reached by 1 other move order) B77 Dragon Variation, Yugoslav Attack, Main Line1. 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 (also reached by 2 other move orders) B77 Dragon Variation, Yugoslav Attack, Sosonko Variation1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 Nc6 8. Qd2 O-O 9. Bc4 Nd7 B78 Dragon Variation, Yugoslav Attack, Chinese Dragon1. 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 Rb8 B78 Dragon Variation, Yugoslav Attack, Old Line1. 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 B78 Dragon Variation, Yugoslav Attack, Topalov Variation1. 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 11. Bb3 Nxd4 12. Bxd4 B79 Dragon Variation, Yugoslav Attack, Soltis Variation1. 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. h4 Rfc8 12. Bb3 h5 B80 Scheveningen Variation1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 B80 Scheveningen Variation, English Attack, with Qd21. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e6 7. Qd2 B80 Scheveningen Variation, Fianchetto Variation1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. g3 B80 Scheveningen Variation, Vitolins Variation1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bb5+ B81 Scheveningen Variation, Keres Attack1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. g4 B82 Scheveningen Variation, Matanovic Attack1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. f4 B82 Scheveningen Variation, Tal Variation1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. f4 Nc6 7. Be3 Be7 8. Qf3 B83 Scheveningen Variation, Classical Variation1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 (also reached by 2 other move orders) B83 Scheveningen Variation, Modern Variation1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 d6 6. Be2 Nf6 (also reached by 2 other move orders) B84 Najdorf Variation, Scheveningen Variation1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e6 7. O-O Nbd7 B85 Scheveningen Variation, Classical Main Line1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. Be2 a6 7. O-O Nf6 8. Be3 Be7 9. f4 d6 10. Qe1 O-O B85 Scheveningen Variation, Classical Variation, Paulsen Variation1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. f4 e6 7. Be2 Qc7 8. O-O Nc6 (also reached by 2 other move orders) B86 Sozin Attack1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bc4 B87 Sozin Attack, Flank Variation1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bc4 e6 7. Bb3 b5 B88 Sozin Attack, Fischer Variation1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bc4 e6 7. Bb3 Be7 8. Be3 O-O 9. f4 B88 Sozin Attack, Leonhardt Variation1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bc4 e6 B89 Sozin Attack, Main Line1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bc4 e6 7. Be3 B89 Sozin Attack, Main Line, Sherbakov Variation1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bc4 e6 7. Be3 Be7 8. Bb3 O-O 9. O-O Na5 10. f4 b6 B89 Velimirovic Attack1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bc4 e6 7. Be3 Be7 8. Qe2 B90 Najdorf Variation1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 (also reached by 4 other move orders) B90 Najdorf Variation, Adams Attack1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. h3 B90 Najdorf Variation, Dekker Gambit1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g4 B90 Najdorf Variation, English Attack1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 (also reached by 4 other move orders) B90 Najdorf Variation, English Attack, Anti-English1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 Ng4 B90 Najdorf Variation, Lipnitsky Attack1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bc4 B90 Najdorf Variation, Petronić Attack1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Rg1 B90 Najdorf Variation, Yates Variation1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bd3 B90 Scheveningen Variation, Delayed Keres Attack1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e6 7. g4 B90 Scheveningen Variation, Delayed Keres Attack, Perenyi Gambit1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e6 7. g4 e5 8. Nf5 g6 9. g5 B90 Scheveningen Variation, English Attack, with f31. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e6 7. f3 B91 Najdorf Variation, Zagreb Variation1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 B92 Najdorf Variation, Opocensky Variation1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 (also reached by 1 other move order) B92 Najdorf Variation, Opocensky Variation, Modern Line1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e5 7. Nb3 Be7 8. O-O Be6 B92 Najdorf Variation, Opocensky Variation, Traditional Line1. 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 B93 Najdorf Variation, Amsterdam Variation1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. f4 B94 Najdorf Variation, Ivkov Variation1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 Nbd7 7. Bc4 Qa5 8. Qd2 e6 9. O-O-O b5 10. Bb3 Bb7 11. Rhe1 Nc5 12. e5 B96 Najdorf Variation, Neo-Classical Defense1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Nc6 B96 Najdorf Variation, Polugaevsky Variation1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 b5 B96 Najdorf Variation, Polugaevsky Variation, Simagin Line1. 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 B97 Najdorf Variation, Poisoned Pawn Accepted1. 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 B97 Najdorf Variation, Poisoned Pawn Variation1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Qb6 B98 Najdorf Variation, Browne Variation1. 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 B98 Najdorf Variation, Goteborg Variation1. 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 B98 Najdorf Variation, Traditional Line1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 Qc7 B99 Najdorf Variation, Main Line1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 Qc7 9. 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