開局

Nimzo-Indian Defense: Classical, Berlin, Pirc Variation

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 c5 5.dxc5 O-O 6.a3 Bxc5 7.Nf3 b6 8.Bg5
頂尖棋手