All ECO Codes
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D41
D41
Queen's Gambit
Declined, Semi-Tarrasch, San Sebastian Variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c5 5.cxd5 Nxd5 6.e4 Nxc3 7.bxc3 cxd4 8.cxd4 Bb4 9.Bd2 Qa5