ECO C43 · Petrov's Defense

Petrov's Defense: Modern Attack, Bardeleben Variation

1. e4 e5 2. Nf3 Nf6 3. d4 exd4 4. e5 Ne4 5. Qe2 Nc5 6. Nxd4 Nc6

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

7. Be3+0.27

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

Analyze this position

In the Petrov's Defense: Modern Attack, Bardeleben Variation (C43), reached after 1. e4 e5 2. Nf3 Nf6 3. d4 exd4 4. e5 Ne4 5. Qe2 Nc5 6. Nxd4 Nc6, Stockfish 18 recommends 7. Be3 for White. The position is roughly equal (+0.27).

Top engine moves

  1. +0.277. Be3 Nxd4 8. Bxd4 Ne6 9. Be3 d6 10. exd6 Qxd6 11. Nd2 Be7
  2. +0.227. Nf3 Be7 8. Nc3 d6 9. exd6 Qxd6 10. Nb5 Qd8 11. Bf4 O-O
  3. +0.217. Nxc6 dxc6 8. Nc3 Bf5 9. Be3 Qd7 10. f4 Ne4 11. Nxe4 Bxe4

Frequently asked questions

What is the best move in the Petrov's Defense: Modern Attack, Bardeleben Variation?
After 1. e4 e5 2. Nf3 Nf6 3. d4 exd4 4. e5 Ne4 5. Qe2 Nc5 6. Nxd4 Nc6, Stockfish 18 at depth 18 recommends 7. Be3 for White, continuing Nxd4 8. Bxd4 Ne6 9. Be3 d6 10. exd6 Qxd6 11. Nd2 Be7. The position is roughly equal (+0.27). The next best moves are 7. Nf3 (+0.22) and 7. Nxc6 (+0.21).
Is the Petrov's Defense: Modern Attack, Bardeleben Variation a good opening?
Stockfish rates the position at +0.27: 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, Bardeleben 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+).