C42

Petrov's Defense: Classical Attack, Closed Variation

1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 Nf6

The Petrov's Defense: Classical Attack, Closed Variation is a chess opening classified under ECO code C42. It is reached after the moves 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 Nf6.

It belongs to the Petrov's Defense family — one of many ways the line can branch. Understanding the parent system’s plans is the fastest way to play this variation well.

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