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English Opening: Fianchetto, Ultra-Symmetrical, Mecking Variation

1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.d4 cxd4 8.Nxd4 Ng4 9.e3
顶级棋手