開局

Queen's Gambit Declined: Catalan Opening

1.d4 Nf6 2.c4 e6 3.g3 d5 4.Nf3 Bb4+ 5.Bd2 Be7 6.Bg2 c6 7.O-O O-O 8.Qb3 Nbd7
頂尖棋手