C41

Philidor Defense: Lopez Countergambit, Jaenisch Variation

1. e4 e5 2. Nf3 d6 3. d4 f5 4. Bc4 exd4 5. Ng5 Nh6 6. Nxh7

The Philidor Defense: Lopez Countergambit, Jaenisch Variation is a chess opening classified under ECO code C41. It is reached after the moves 1. e4 e5 2. Nf3 d6 3. d4 f5 4. Bc4 exd4 5. Ng5 Nh6 6. Nxh7.

It belongs to the Philidor 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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