All ECO Codes
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E30
Nimzo-Indian Defence
Leningrad Variation
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Bg5
E30
Nimzo-Indian Defence
Leningrad, ...b5 Gambit
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Bg5 h6 5.Bh4 c5 6.d5 b5