Chess Opening Theory/ECO volume B

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ECO index: B00--B99[edit]

B00: Irregular Asymmetrical Responses to 1. e4: 1...a6 (St. George's Defence), 1...b6 (Owens' Defence), 1...f6 (Barnes Defence), 1...h6 (Carr Defence), 1...Na6 (Lemming Defence), 1...Nc6 (Nimzowitsch Defence), 1...Nh6 (Adams Defence), 1...a5 (Cornstalk Defence), 1...b5 (Polish Gambit), 1...f5 (Fred Defence), 1...g5 (Borg Defence), 1...h5 (Goldsmith Defence)
B01: Scandinavian Defence: 1. e4 d5
B02: Alekhine Defence: Unusual White third moves: 1. e4 Nf6 2. e5 Nd5 3. g3, 3. c4, 3. Nc3
B03: Alekhine Defence, Four Pawns' Attack: 1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. g3
B04: Alekhine Defence, Modern Variation: 1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3
B05: Alekhine Defence, Modern Variation: 1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 Bg4
B06: Modern Defence: 1. e4 g6
B07: Pirc Defence, Unusual White second and third moves: 1. e4 d6
B08: Pirc Defence, Two Knights: 1. e4 d6 2. d4 Nf6 3. Nc3 g6 4.Nf3
B08: Pirc Defence, Two Knights (Schlechter): 1. e4 d6 2. d4 Nf6 3. Nc3 g6 4.Nf3 Bg7 5. h3
B08: Pirc Defence, Two Knights (Quiet): 1. e4 d6 2. d4 Nf6 3. Nc3 g6 4.Nf3 Bg7 5. Be2
B09: Pirc Defence, Austrian Attack: 1. e4 d6 2. d4 Nf6 3. Nc3 g6 4.f4
B10: Caro-Kann Defence, Unusual White second moves: 1. e4 c6
B11: Caro-Kann Defence, Unusual Black second moves: 1. e4 c6 2. d4
B11: Caro-Kann Defence, Two Knights Variation: 1. e4 c6 2. Nc3
B12: Caro-Kann Defence, Classical Variation: 1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Bf5
B13: Caro-Kann Defence, Exchange Variation: 1. e4 c6 2. d4 d5 3. exd5 cxd5 4. Bd3
B13: Caro-Kann Defence, Panov-Botvinnik Attack: 1. e4 c6 2. d4 d5 3. exd5 cxd5 4. c4
B14: Caro-Kann Defence, Panov-Botvinnik Attack with 5...e6: 1. e4 c6 2. d4 d5 3. exd5 cxd5 4. c4 Nf6 5. Nc3 e6
B14: Caro-Kann Defence, Panov-Botvinnik Attack with 5...g6: 1. e4 c6 2. d4 d5 3. exd5 cxd5 4. c4 Nf6 5. Nc3 g6
B15: Caro-Kann Defence, 3.Nc3 sidelines: 1. e4 c6 2. d4 d5 3. Nc3
B15: Caro-Kann Defence, Korchnoi Variation: 1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nf6 5. Nxf6 exf6
B16: Caro-Kann Defence, Larsen-Bronstein Variation: 1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nf6 5. Nxf6 gxf6
B17: Caro-Kann Defence, Modern Variation: 1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nd7
B18: Caro-Kann Defence, Classical Variation sidelines: 1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Bf5
B19: Caro-Kann Defence, Classical Variation main line: 1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. h4 h6 7. Nf3
B20: Sicilian Defence, Unusual White second moves: 1. e4 c5
B21: Sicilian Defence, 2.f4 Attack: 1. e4 c5 2. f4
B21: Sicilian Defence, Smith-Morra Gambit: 1. e4 c5 2. d4 cxd4 3. c3
B22: Sicilian Defence, Alapin Variation: 1. e4 c5 2. c3
B23: Sicilian Defence, Closed Sicilians without g3: 1. e4 c5 2. Nc3
B23: Sicilian Defence, Grand Prix Attack: 1. e4 c5 2. Nc3 Nc6 3. f4
B24: Closed Sicilian, 3.g3 sidelines: 1. e4 c5 2. Nc3 Nc6 3. g3
B25: Closed Sicilian, 3.g3 without early Be3: 1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7
B26: Closed Sicilian, 3.g3 with early Be3: 1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. Be3
B27: Sicilian Defence, 2.Nf3 early deviations: 1. e4 c5 2. Nf3
B28: Sicilian Defence, O'Kelly Variation: 1. e4 c5 2. Nf3 a6
B29: Sicilian Defence, Nimzowitsch Variation: 1. e4 c5 2. Nf3 Nf6
B30: Sicilian Defence, Rossolimo Variation without ...g6: 1. e4 c5 2. Nf3 Nc6 3. Bb5
B31: Sicilian Defence, Rossolimo Variation with 3...g6: 1. e4 c5 2. Nf3 Nc6 3. Bb5 g6
B32: Sicilian Defence, Löwenthal and Kalashnikov Variations: 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e5
B33: Sicilian Defence, Pelikan and Sveshnikov Variations: 1. 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5
B34: Sicilian Defence, Accelerated Dragon sidelines: 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6
B35: Sicilian Defence, Accelerated Dragon main line: 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. Bc4
B36: Sicilian Defence, Maroczy Bind, Gurgenidze System: 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. c4 Nxd4 6. Qxd4
B37: Sicilian Defence, Maroczy Bind with 5...Bg7 sidelines: 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. c4 Bg7
B38: Sicilian Defence, Maroczy Bind with 5...Bg7 and 7...O-O: 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. c4 Bg7 6. Be3 Nf6 7. Nc3 O-O
B39: Sicilian Defence, Maroczy Bind with 5...Bg7 main line: 1. e4 c5 2. Nc3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. c4 Bg7 6. Be3 Nf6 7. Nc3 Ng4 8. Qxg4 Nxd4
B40: Sicilian Defence, 2...e6 miscellaneous: 1. e4 c5 2. Nf3 e6
B41: Sicilian Defence, Kan Variation unusual lines: 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6
B42: Sicilian Defence, Kan Variation with 5.Bd3: 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3
B43: Sicilian Defence, Kan Variation with 5.Nc3: 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3
B44: Sicilian Defence, Taimanov Variation with 5.Nb5: 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nb5
B45: Sicilian Defence, Four Knights' Variation: 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6
B46: Sicilian Defence, Taimanov Variation with 5.Nc3: 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3
B47: Sicilian Defence, Taimanov Variation with 5...Qc7: 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7
B48: Sicilian Defence, Taimanov Variation with 6.Be3 a6 without Be2: 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. Be3 a6
B49: Sicilian Defence, Taimanov Variation with 6.Be3 a6 7.Be2: 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. Be3 a6 7. Be2
B50: Sicilian Defence, 2...d6 miscellaneous: 1. e4 c5 2. Nf3 d6
B51: Sicilian Defence, Moscow Variation early deviations: 1. e4 c5 2. Nf3 d6 3. Bb5
B52: Sicilian Defence, Moscow Variation with 3...Bd7: 1. e4 c5 2. Nf3 d6 3. Bb5 Bd7
B53: Sicilian Defence, Chekhover Variation: 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Qxd4
B54: Sicilian Defence, Unusual open lines: 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4
B55: Sicilian Defence, Open lines with 5.f3: 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. f3
B56: Sicilian Defence, Unusual open lines: 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3
B57: Classical Sicilian, Sozin Variation: 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bc4
B58: Classical Sicilian, Boleslavsky Variation with 7.Nf3: 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 e5 7. Nf3
B59: Classical Sicilian, Boleslavsky Variation with 7.Nb3: 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 e5 7. Nb3
B60: Classical Sicilian, Richter-Rauzer Variation sidelines: 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bg5
B61: Classical Sicilian, Richter-Rauzer Variation with 6...Bd7 7.Qd2: 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bg5 Bd7 7. Qd2
B62: Classical Sicilian, Richter-Rauzer Variation with 6...e6 sidelines: 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bg5 e6
B63: Classical Sicilian, Richter-Rauzer Variation with 7...Be7: 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bg5 e6 7. Qd2 Be7
B64: Classical Sicilian, Richter-Rauzer Variation without 9...Nxd4: 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bg5 e6 7. Qd2 Be7 8. O-O-O O-O 9. f4
B65: Classical Sicilian, Richter-Rauzer Variation with 9...Nxd4: 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bg5 e6 7. Qd2 Be7 8. O-O-O O-O 9. f4 Nxd4
B66: Classical Sicilian, Richter-Rauzer Variation with 7...a6 8.O-O-O h6: 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bg5 Bd7 7. Qd2 a6 8. O-O-O h6
B67: Classical Sicilian, Richter-Rauzer Variation with 7...a6 and 8...Bd7: 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bg5 Bd7 7. Qd2 a6 8. O-O-O Bd7
B68: Classical Sicilian, Richter-Rauzer Variation with 9.f4 Be7: 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bg5 Bd7 7. Qd2 a6 8. O-O-O Bd7 9. f4 9. Be7
B69: Classical Sicilian, Richter-Rauzer Variation with 11.Bxf6: 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bg5 Bd7 7. Qd2 a6 8. O-O-O Bd7 9. f4 9. Be7 10. Nf3 O-O 11. Bxf6
B70: Dragon Sicilian, early deviations: 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6
B71: Dragon Sicilian, Levenfish Attack: 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. f4
B72: Dragon Sicilian, 6.Be3 without f3 and Qd2: 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3
B73: Dragon Sicilian, Classical System without Nb3: 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. Be2 Nc6 8. O-O O-O
B74: Dragon Sicilian, Classical System with Nb3: 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. Be2 Nc6 8. O-O O-O 9. Nb3
B75: Dragon Sicilian, Yugoslav Attack miscellaneous: 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3
B76: Dragon Sicilian, Yugoslav Attack with 9.O-O-O: 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
B76: Dragon Sicilian, Yugoslav attack with 9.g4: 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
B77: Dragon Sicilian, Yugoslav Attack with 9.Bc4 sidelines: 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
B78: Dragon Sicilian, 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 Bd7 10. O-O-O Rc8
B78: Dragon Sicilian, Yugoslav Attack, Soltis 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 Bd7 10. O-O-O Rc8 11. Bb3 Ne5 12. h4 h5
B79: Dragon Sicilian, Yugoslav Attack with 10...Qa5: 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
B80: Scheveningen Sicilian, 6.g3: 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. g3
B80: Scheveningen Sicilian, 6.Be3 and English Attack: 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Be3
B81: Scheveningen Sicilian, Keres Attack: 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. g4
B82: Scheveningen Sicilian with 6.f4: 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. f4
B83: Scheveningen Sicilian, 6.Be2 without ...a6: 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Be2 Nc6 7. O-O Be7
B84: Scheveningen Sicilian, with 6.Be2 a6: 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Be2 a6
B85: Scheveningen Sicilian with 6.Be2 a6 and early Be3: 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Be2 a6 7. Be3 Be7 8. O-O O-O 9. f4
B86: Scheveningen Sicilian, Sozin Variation without early ...b5: 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Bc4
B87: Scheveningen Sicilian, Sozin Variation with early ...b5: 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Bc4 a6 7. Bb3 b5
B88: Sicilian Defence, Sozin Attack: 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bc4
B89: Sicilian Defence, Velimirović Attack: 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bc4 e6 7. f4 Bd7 8. Qe2
B90: Najdorf Sicilian, Unusual White sixth moves: 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6
B90: Najdorf Sicilian, English Attack: 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3
B90: Najdorf Sicilian, Fischer-Sozin Attack: 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bc4
B91: Najdorf Sicilian with 6.g3: 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3
B92: Najdorf Sicilian, Classical Variation: 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2
B93: Najdorf Sicilian with 6.f4: 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. f4
B94: Najdorf Sicilian, old main line with 6...Nbd7: 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 Nbd7
B95: Najdorf Sicilian, old main line, unusual White seventh moves: 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6
B96: Najdorf Sicilian, old main line except 7...Qb6 or 7...Be7: 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4
B97: Najdorf Sicilian, Poisoned Pawn Variation: 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Qb6
B98: Najdorf Sicilian, 6.Bg5 e6 7.f4 Be7 sidelines: 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7
B99: Najdorf Sicilian, 6.Bg5 e6 7.f4 Be7 8.Qf3 Qc7 9.O-O-O Nbd7 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 O-O-O

ECO volumes[edit]

ECO volume A A00-A99
ECO volume B B00-B99
ECO volume C C00-C99
ECO volume D D00-D99
ECO volume E E00-E99

External Links[edit]