All ECO Codes
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A17
English Opening
1.c4 Nf6 2.Nc3 e6
A17
English Opening
Queen's Indian formation
1.c4 Nf6 2.Nc3 e6 3.Nf3 b6
A17
English Opening
Queen's Indian, Romanishin Variation
1.c4 Nf6 2.Nc3 e6 3.Nf3 b6 4.e4 Bb7 5.Bd3
A17
English Opening
Nimzo-English Opening
1.c4 Nf6 2.Nc3 e6 3.Nf3 Bb4