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ECO CODES | |
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(Click on an opening description to see diagram) |
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A20 - A29 |
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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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