開局

Catalan Opening: Closed

1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 Be7 5.Nf3 O-O 6.O-O Nbd7 7.Nc3 c6 8.b3 b6 9.Bb2 Ba6
頂尖棋手