开局

English Opening: Caro-Kann Defensive System

1.c4 c6 2.Nf3 d5 3.e3 Nf6 4.Nc3 e6 5.b3 Nbd7 6.Qc2 Bd6 7.Bb2 O-O 8.Be2 a6 9.d4
顶级棋手