All ECO Codes
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D52
D52
Queen's Gambit
Declined, Cambridge Springs Defence, Bogoljubow Variation
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Nbd7 5.e3 c6 6.Nf3 Qa5 7.Nd2 Bb4 8.Qc2