ECO C43 · Petrov's Defense

Petrov's Defense: Modern Attack, Steinitz Variation

1. e4 e5 2. Nf3 Nf6 3. d4 exd4 4. e5 Ne4 5. Qe2

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

5… Bb4++0.13

The position is roughly equal. Stockfish 18, depth 18.

Analyze this position

In the Petrov's Defense: Modern Attack, Steinitz Variation (C43), reached after 1. e4 e5 2. Nf3 Nf6 3. d4 exd4 4. e5 Ne4 5. Qe2, Stockfish 18 recommends 5… Bb4+ for Black. The position is roughly equal (+0.13).

Top engine moves

  1. +0.135… Bb4+ 6. Kd1 d5 7. exd6 f5 8. Nbd2 Bxd2 9. Nxd2 O-O 10. dxc7
  2. +0.345… Nc5 6. Nxd4 Nc6 7. Be3 Nxd4 8. Bxd4 Ne6 9. Be3 d5 10. exd6
  3. +1.405… d5 6. exd6 f5 7. Nbd2 Qxd6 8. Nxe4 fxe4 9. Qxe4+ Qe7 10. Qxe7+

Frequently asked questions

What is the best move in the Petrov's Defense: Modern Attack, Steinitz Variation?
After 1. e4 e5 2. Nf3 Nf6 3. d4 exd4 4. e5 Ne4 5. Qe2, Stockfish 18 at depth 18 recommends 5… Bb4+ for Black, continuing 6. Kd1 d5 7. exd6 f5 8. Nbd2 Bxd2 9. Nxd2 O-O 10. dxc7. The position is roughly equal (+0.13). The next best moves are 5… Nc5 (+0.34) and 5… d5 (+1.40).
Is the Petrov's Defense: Modern Attack, Steinitz Variation a good opening?
Stockfish rates the position at +0.13: the position is roughly equal. 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, Steinitz 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+).