ECO C41 · Philidor Defense

Philidor Defense: Nimzowitsch Variation, Klein Variation

1. e4 e5 2. Nf3 d6 3. d4 Nf6 4. Bc4

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Black to move. The arrow shows Stockfish’s best move.
Best move

4… exd4+0.30

White is slightly better. Stockfish 18, depth 18.

Analyze this position

In the Philidor Defense: Nimzowitsch Variation, Klein Variation (C41), reached after 1. e4 e5 2. Nf3 d6 3. d4 Nf6 4. Bc4, Stockfish 18 recommends 4… exd4 for Black. White is slightly better (+0.30).

Top engine moves

  1. +0.304… exd4 5. Qxd4 Be7 6. Nc3 O-O 7. Bf4 a6 8. a4 Nc6 9. Qd3
  2. +0.424… Nxe4 5. dxe5 c6 6. Nbd2 Nxd2 7. Bxd2 d5 8. Be2 Be7 9. c4
  3. +0.524… Nc6 5. d5 Nb8 6. Nc3 Be7 7. a4 O-O 8. Qe2 c6 9. h3

Frequently asked questions

What is the best move in the Philidor Defense: Nimzowitsch Variation, Klein Variation?
After 1. e4 e5 2. Nf3 d6 3. d4 Nf6 4. Bc4, Stockfish 18 at depth 18 recommends 4… exd4 for Black, continuing 5. Qxd4 Be7 6. Nc3 O-O 7. Bf4 a6 8. a4 Nc6 9. Qd3. White is slightly better (+0.30). The next best moves are 4… Nxe4 (+0.42) and 4… Nc6 (+0.52).
Is the Philidor Defense: Nimzowitsch Variation, Klein Variation a good opening?
Stockfish rates the position at +0.30: white is slightly better. Evaluations this early in the game are small, so practical results depend far more on knowing the plans and typical structures than on the engine's number.
What is the ECO code of the Philidor Defense: Nimzowitsch Variation, Klein Variation?
C41. ECO codes classify chess openings from A00 to E99; C is the volume for open games and the French Defense.

Opening names from the Lichess opening book (CC0). Pieces by Colin M.L. Burnett (GPLv2+).