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ECO CODES | |
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(Click on an opening description to see diagram) |
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A13 - A39 |
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A13 |
English opening 1. c2c4 e7e6 |
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A13 |
English: Romanishin gambit 1. c2c4 e7e6 2.  g1f3
g8f6
3.
g2g3
a7a6
4.
 f1g2
b7b5
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A13 |
English opening: Agincourt variation 1. c2c4 e7e6 2. g1f3
d7d5
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A13 |
English: Wimpey system 1. c2c4 e7e6 2. g1f3
d7d5
3.
b2b3
g8f6
4.
c1b2
c7c5
5.
e2e3
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A13 |
English opening: Agincourt variation 1. c2c4 e7e6 2. g1f3
d7d5
3.
g2g3
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A13 |
English: Kurajica defence 1. c2c4 e7e6 2. g1f3
d7d5
3.
g2g3
c7c6
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A13 |
English: Neo-Catalan 1. c2c4 e7e6 2. g1f3
d7d5
3.
g2g3
g8f6
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A13 |
English: Neo-Catalan accepted 1. c2c4 e7e6 2. g1f3
d7d5
3.
g2g3
g8f6
4.
f1g2
d5c4
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A14 |
English: Neo-Catalan declined 1. c2c4 e7e6 2. g1f3
d7d5
3.
g2g3
g8f6
4.
f1g2
f8e7
5.
0-0
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A14 |
English: Symmetrical, Keres defence 1. c2c4 e7e6 2. g1f3
d7d5
3.
g2g3
g8f6
4.
f1g2
f8e7
5.
0-0
c7c5
6. c4d5 f6d5
7.
b1c3
b8c6
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A15 |
English, 1...Nf6 (Anglo-Indian defense) 1. c2c4 g8f6
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A15 |
English orang-utan 1. c2c4 g8f6
2.
b2b4
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A15 |
English opening 1. c2c4 g8f6
2.
g1f3
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A16 |
English opening 1. c2c4 g8f6
2.
b1c3
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A16 |
English: Anglo-Gruenfeld defense 1. c2c4 g8f6
2.
b1c3
d7d5
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A16 |
English: Anglo-Gruenfeld, Smyslov defense 1. c2c4 g8f6
2.
b1c3
d7d5
3.
c4d5
f6d5
4.
g2g3
g7g6
5.
f1g2
d5c3
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A16 |
English: Anglo-Gruenfeld, Czech defense 1. c2c4 g8f6
2.
b1c3
d7d5
3.
c4d5
f6d5
4.
g2g3
g7g6
5.
f1g2
d5b6
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A16 |
English: Anglo-Gruenfeld defense 1. c2c4 g8f6
2.
b1c3
d7d5
3.
c4d5
f6d5
4.
g1f3
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A16 |
English: Anglo-Gruenfeld defense, Korchnoi variation 1. c2c4 g8f6
2.
b1c3
d7d5
3.
c4d5
f6d5
4.
g1f3
g7g6
5.
g2g3
f8g7
6. f1g2
e7e5
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A17 |
English opening 1. c2c4 g8f6
2.
b1c3
e7e6
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A17 |
English: Queens Indian formation 1. c2c4 g8f6
2.
b1c3
e7e6
3.
g1f3
b7b6
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A17 |
English: Queens Indian, Romanishin variation 1. c2c4 g8f6
2.
b1c3
e7e6
3.
g1f3
b7b6
4.
e2e4
c8b7
5.
f1d3
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A17 |
English: Nimzo-English opening 1. c2c4 g8f6
2.
b1c3
e7e6
3.
g1f3
f8b4
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A18 |
English: Mikenas-Carls variation 1. c2c4 g8f6
2.
b1c3
e7e6
3.
e2e4
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A18 |
English: Mikenas-Carls, Flohr variation 1. c2c4 g8f6
2.
b1c3
e7e6
3.
e2e4
d7d5
4.
e4e5
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A18 |
English: Mikenas-Carls, Kevitz variation 1. c2c4 g8f6
2.
b1c3
e7e6
3.
e2e4
b8c6
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A19 |
English: Mikenas-Carls, Sicilian variation 1. c2c4 g8f6
2.
b1c3
e7e6
3.
e2e4
c7c5
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A20 |
English opening 1. c2c4 e7e5 |
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A20 |
English, Nimzovich variation 1. c2c4 e7e5 2. g1f3
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A20 |
English, Nimzovich, Flohr variation 1. c2c4 e7e5 2. g1f3
e5e4
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A21 |
English opening 1. c2c4 e7e5 2. b1c3
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A21 |
English, Troeger defence 1. c2c4 e7e5 2. b1c3
d7d6
3.
g2g3
c8e6
4.
f1g2
b8c6
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A21 |
English, Keres variation 1. c2c4 e7e5 2. b1c3
d7d6
3.
g2g3
c7c6
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A21 |
English opening 1. c2c4 e7e5 2. b1c3
d7d6
3.
g1f3
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A21 |
English, Smyslov defence 1. c2c4 e7e5 2. b1c3
d7d6
3.
g1f3
c8g4
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A21 |
English, Kramnik-Shirov counterattack 1. c2c4 e7e5 2. b1c3
f8b4
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A22 |
English opening 1. c2c4 e7e5 2. b1c3
g8f6
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A22 |
English: Bellon gambit 1. c2c4 e7e5 2. b1c3
g8f6
3.
g1f3
e5e4
4.
f3g5
b7b5
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A22 |
English: Carls' Bremen system 1. c2c4 e7e5 2. b1c3
g8f6
3.
g2g3
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A22 |
English: Bremen, reverse dragon 1. c2c4 e7e5 2. b1c3
g8f6
3.
g2g3
d7d5
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A22 |
English: Bremen, Smyslov system 1. c2c4 e7e5 2. b1c3
g8f6
3.
g2g3
f8b4
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A23 |
English: Bremen system, Keres variation 1. c2c4 e7e5 2. b1c3
g8f6
3.
g2g3
c7c6
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A24 |
English: Bremen system with ...g6 1. c2c4 e7e5 2. b1c3
g8f6
3.
g2g3
g7g6
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A25 |
English: Sicilian reversed 1. c2c4 e7e5 2. b1c3
b8c6
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A25 |
English: closed system 1. c2c4 e7e5 2. b1c3
b8c6
3.
g2g3
g7g6
4.
f1g2
f8g7
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A25 |
English: closed, Taimanov variation 1. c2c4 e7e5 2. b1c3
b8c6
3.
g2g3
g7g6
4.
f1g2
f8g7
5.
e2e3
d7d6
6. g1e2
g8h6
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A25 |
English: closed, Hort variation 1. c2c4 e7e5 2. b1c3
b8c6
3.
g2g3
g7g6
4.
f1g2
f8g7
5.
e2e3
d7d6
6. g1e2
c8e6
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A25 |
English: closed, 5.Rb1 1. c2c4 e7e5 2. b1c3
b8c6
3.
g2g3
g7g6
4.
f1g2
f8g7
5.
 a1b1
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A25 |
English: closed, 5.Rb1 Taimanov variation 1. c2c4 e7e5 2. b1c3
b8c6
3.
g2g3
g7g6
4.
f1g2
f8g7
5.
a1b1
g8h6
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A25 |
English: closed system (without ...d6) 1. c2c4 e7e5 2. b1c3
b8c6
3.
g2g3
g7g6
4.
f1g2
f8g7
5.
d2d3
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A26 |
English: closed system 1. c2c4 e7e5 2. b1c3
b8c6
3.
g2g3
g7g6
4.
f1g2
f8g7
5.
d2d3
d7d6
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A26 |
English: Botvinnik system 1. c2c4 e7e5 2. b1c3
b8c6
3.
g2g3
g7g6
4.
f1g2
f8g7
5.
d2d3
d7d6
6. e2e4 |
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A27 |
English: three knights system 1. c2c4 e7e5 2. b1c3
b8c6
3.
g1f3
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A28 |
English: four knights system 1. c2c4 e7e5 2. b1c3
b8c6
3.
g1f3
g8f6
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A28 |
English: Nenarokov variation 1. c2c4 e7e5 2. b1c3
b8c6
3.
g1f3
g8f6
4.
d2d4
e5d4
5.
f3d4
f8b4
6. c1g5
h7h6
7.
g5h4
b4c3
8.
b2c3
c6e5
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A28 |
English: Bradley Beach variation 1. c2c4 e7e5 2. b1c3
b8c6
3.
g1f3
g8f6
4.
d2d4
e5e4
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A28 |
English: four knights, Nimzovich variation 1. c2c4 e7e5 2. b1c3
b8c6
3.
g1f3
g8f6
4.
e2e4
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A28 |
English: four knights, Marini variation 1. c2c4 e7e5 2. b1c3
b8c6
3.
g1f3
g8f6
4.
a2a3
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A28 |
English: four knights, Capablanca variation 1. c2c4 e7e5 2. b1c3
b8c6
3.
g1f3
g8f6
4.
d2d3
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A28 |
English: four knights, 4.e3 1. c2c4 e7e5 2. b1c3
b8c6
3.
g1f3
g8f6
4.
e2e3
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A28 |
English: four knights, Stean variation 1. c2c4 e7e5 2. b1c3
b8c6
3.
g1f3
g8f6
4.
e2e3
f8b4
5.
 d1c2
0-0
6. c3d5
f8e8
7.
c2f5
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A28 |
English: four knights, Romanishin variation 1. c2c4 e7e5 2. b1c3
b8c6
3.
g1f3
g8f6
4.
e2e3
f8b4
5.
d1c2
b4c3
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A29 |
English: four knights, kingside fianchetto 1. c2c4 e7e5 2. b1c3
b8c6
3.
g1f3
g8f6
4.
g2g3
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A30 |
English: symmetrical variation 1. c2c4 c7c5 |
|
A30 |
English: symmetrical, hedgehog system 1. c2c4 c7c5 2. g1f3
g8f6
3.
g2g3
b7b6
4.
f1g2
c8b7
5.
0-0
e7e6
6. b1c3
f8e7
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A30 |
English: symmetrical, hedgehog, flexible formation 1. c2c4 c7c5 2. g1f3
g8f6
3.
g2g3
b7b6
4.
f1g2
c8b7
5.
0-0
e7e6
6. b1c3
f8e7
7.
d2d4
c5d4
8.
d1d4
d7d6
9.
f1d1
a7a6
10.
b2b3
b8d7
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A31 |
English: symmetrical, Benoni formation 1. c2c4 c7c5 2. g1f3
g8f6
3.
d2d4
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A32 |
English: symmetrical variation 1. c2c4 c7c5 2. g1f3
g8f6
3.
d2d4
c5d4
4.
f3d4
e7e6
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A33 |
English: symmetrical variation 1. c2c4 c7c5 2. g1f3
g8f6
3.
d2d4
c5d4
4.
f3d4
e7e6
5.
b1c3
b8c6
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A33 |
English: symmetrical, Geller variation 1. c2c4 c7c5 2. g1f3
g8f6
3.
d2d4
c5d4
4.
f3d4
e7e6
5.
b1c3
b8c6
6. g2g3 d8b6
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A34 |
English: symmetrical variation 1. c2c4 c7c5 2. b1c3
|
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A34 |
English: symmetrical, three knights system 1. c2c4 c7c5 2. b1c3
g8f6
3.
g1f3
d7d5
4.
c4d5
f6d5
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A34 |
English: symmetrical variation 1. c2c4 c7c5 2. b1c3
g8f6
3.
g2g3
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A34 |
English: symmetrical, Rubinstein system 1. c2c4 c7c5 2. b1c3
g8f6
3.
g2g3
d7d5
4.
c4d5
f6d5
5.
f1g2
d5c7
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A35 |
English: symmetrical variation 1. c2c4 c7c5 2. b1c3
b8c6
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A35 |
English: symmetrical, four knights system 1. c2c4 c7c5 2. b1c3
b8c6
3.
g1f3
g8f6
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A36 |
English: symmetrical variation 1. c2c4 c7c5 2. b1c3
b8c6
3.
g2g3
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A36 |
English: ultra-symmetrical variation 1. c2c4 c7c5 2. b1c3
b8c6
3.
g2g3
g7g6
4.
f1g2
f8g7
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A36 |
English: symmetrical, Botvinnik system reversed 1. c2c4 c7c5 2. b1c3
b8c6
3.
g2g3
g7g6
4.
f1g2
f8g7
5.
e2e3
e7e5
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A36 |
English: symmetrical, Botvinnik system 1. c2c4 c7c5 2. b1c3
b8c6
3.
g2g3
g7g6
4.
f1g2
f8g7
5.
e2e4
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A37 |
English: symmetrical variation 1. c2c4 c7c5 2. b1c3
b8c6
3.
g2g3
g7g6
4.
f1g2
f8g7
5.
g1f3
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A37 |
English: symmetrical, Botvinnik system reversed 1. c2c4 c7c5 2. b1c3
b8c6
3.
g2g3
g7g6
4.
f1g2
f8g7
5.
g1f3
e7e5
|
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A38 |
English: symmetrical variation 1. c2c4 c7c5 2. b1c3
b8c6
3.
g2g3
g7g6
4.
f1g2
f8g7
5.
g1f3
g8f6
|
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A38 |
English: symmetrical, main line with d3 1. c2c4 c7c5 2. b1c3
b8c6
3.
g2g3
g7g6
4.
f1g2
f8g7
5.
g1f3
g8f6
6. 0-0 0-0 7. d2d3 |
|
A38 |
English: symmetrical, main line with b3 1. c2c4 c7c5 2. b1c3
b8c6
3.
g2g3
g7g6
4.
f1g2
f8g7
5.
g1f3
g8f6
6. 0-0 0-0 7. b2b3 |
|
A39 |
English: symmetrical, main line with d4 1. c2c4 c7c5 2. b1c3
b8c6
3.
g2g3
g7g6
4.
f1g2
f8g7
5.
g1f3
g8f6
6. 0-0 0-0 7. d2d4 |
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