Petrov's Defense: Modern Attack

1.
1. e4
2. e5
2.
3. Nf3
4. Nf6
3.
5. d4

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The Petrov's Defense: Modern Attack is a chess opening classified under ECO code C43 (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.