Encyclopaedia of Chess Openings Classification Code Index - Play this position with Chess Program Fritz online
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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
(FredDefence),
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
1.e4
Nf6 2.e5 Nd5 3.c4
1.e4
Nf6 2.e5 Nd5 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.d3
d6 6.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..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 Nf3 Nc6 3 d4
cxd4 4 Nxd4 g6 5 c4 Bg7 6 Be3 Nf6 7 Nc3 Ng4
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 d6 3 d4 cxd4 4 Nxd4 Nf6 5 Nc3 Nc6 6 Bg5 e6 7 Qd2 a6 8 O-O-O Bd7
B68:
Classical Sicilian, Richter-Rauzer Variation with 9.f4 Be7: 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
B69:
Classical Sicilian, Richter-Rauzer Variation with 11.Bxf6: 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
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 Nbd7
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