D23
Mannheim Variation, QGA
1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. Qa4+ Opening moves: 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. Qa4+. This position is classified under ECO code D23.
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