C42
Petrov Defense: Queen Invasion
1. e4 e5 2. Nf3 Nf6 3. Nxe5 Nxe4 4. Bc4 d5 5. Bb3 Qg5 6. Nf3 Qxg2 7. Rf1 Bg4 Opening moves: 1. e4 e5 2. Nf3 Nf6 3. Nxe5 Nxe4 4. Bc4 d5 5. Bb3 Qg5 6. Nf3 Qxg2 7. Rf1 Bg4. This position is classified under ECO code C42.
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