ECO C43 · Petrov's Defense

Petrov's Defense: Modern Attack, Center Variation

1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 4. Bd3

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

4… Nc6+0.37

White is slightly better. Stockfish 18, depth 18.

Analyze this position

In the Petrov's Defense: Modern Attack, Center Variation (C43), reached after 1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 4. Bd3, Stockfish 18 recommends 4… Nc6 for Black. White is slightly better (+0.37).

Top engine moves

  1. +0.374… Nc6 5. dxe5 Nc5 6. Nc3 Nxd3+ 7. Qxd3 d6 8. Bf4 dxe5 9. Qxd8+
  2. +0.384… d5 5. Nxe5 Nd7 6. Nxd7 Bxd7 7. O-O Qf6 8. Be3 Bf5 9. Qf3
  3. +0.524… Be7 5. Nxe5 Nf6 6. O-O O-O 7. Re1 d6 8. Nf3 d5 9. h3

Frequently asked questions

What is the best move in the Petrov's Defense: Modern Attack, Center Variation?
After 1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 4. Bd3, Stockfish 18 at depth 18 recommends 4… Nc6 for Black, continuing 5. dxe5 Nc5 6. Nc3 Nxd3+ 7. Qxd3 d6 8. Bf4 dxe5 9. Qxd8+. White is slightly better (+0.37). The next best moves are 4… d5 (+0.38) and 4… Be7 (+0.52).
Is the Petrov's Defense: Modern Attack, Center Variation a good opening?
Stockfish rates the position at +0.37: 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 Petrov's Defense: Modern Attack, Center Variation?
C43. 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+).