Petrov's Defense: Classical Attack, Closed Variation

1.
1. e4
2. e5
2.
3. Nf3
4. Nf6
3.
5. Nxe5
6. d6
4.
7. Nf3
8. Nxe4
5.
9. d4
10. Nf6

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The Petrov's Defense: Classical Attack, Closed Variation is a chess opening classified under ECO code C42 (Open games). It is a variation of the Petrov's Defense family. Step through the moves on the board above, then play the line yourself or review it with the built-in engine.