開局

Dutch Defense: Fianchetto, Ilyin-Zhenevsky, Stonewall, Botvinnik Variation

1.d4 f5 2.c4 Nf6 3.g3 e6 4.Bg2 Be7 5.Nf3 O-O 6.O-O d5 7.b3
頂尖棋手