All ECO Codes
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A22
English Opening
1.c4 e5 2.Nc3 Nf6
A22
English Opening
Bellon Gambit
1.c4 e5 2.Nc3 Nf6 3.Nf3 e4 4.Ng5 b5
A22
English Opening
Carls' Bremen System
1.c4 e5 2.Nc3 Nf6 3.g3
A22
English Opening
Bremen System, Reverse Dragon
1.c4 e5 2.Nc3 Nf6 3.g3 d5
A22
English Opening
Bremen System, Smyslov System
1.c4 e5 2.Nc3 Nf6 3.g3 Bb4