Petrov's Defense: Classical Attack, Mason 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. d5
6.
11. Bd3
12. Be7
7.
13. O-O
14. O-O

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The Petrov's Defense: Classical Attack, Mason 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.