Obertures

Queen's Gambit Declined: Catalan Opening

1.d4 Nf6 2.c4 e6 3.g3 d5 4.Nf3 Be7 5.Bg2 O-O 6.O-O dxc4 7.Qc2 a6 8.a4 Nc6 9.Qxc4
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