Petrov's Defense: Classical Attack, Krause Variation
1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Nc6 7. O-O Be7 8. Re1 Bg4 9. c3 f5 10. c4
10… Bh4−0.47
Black is slightly better. Stockfish 18, depth 18.
Analyze this positionIn the Petrov's Defense: Classical Attack, Krause Variation (C42), reached after 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Nc6 7. O-O Be7 8. Re1 Bg4 9. c3 f5 10. c4, Stockfish 18 recommends 10… Bh4 for Black. Black is slightly better (−0.47).
Top engine moves
- −0.4710… Bh4 11. g3 Bf6 12. cxd5 Nxd4 13. Qa4+ b5 14. Bxb5+ Nxb5 15. Qxb5+
- −0.0910… dxc4 11. Bxc4 Qd6 12. Nc3 O-O-O 13. Nxe4 fxe4 14. Rxe4 Qg6 15. Bd3
- 0.0010… O-O 11. cxd5 Bxf3 12. gxf3 Nxf2 13. Kxf2 Bd6 14. f4 Qh4+ 15. Kg2
Frequently asked questions
What is the best move in the Petrov's Defense: Classical Attack, Krause Variation?
After 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Nc6 7. O-O Be7 8. Re1 Bg4 9. c3 f5 10. c4, Stockfish 18 at depth 18 recommends 10… Bh4 for Black, continuing 11. g3 Bf6 12. cxd5 Nxd4 13. Qa4+ b5 14. Bxb5+ Nxb5 15. Qxb5+. Black is slightly better (−0.47). The next best moves are 10… dxc4 (−0.09) and 10… O-O (0.00).
Is the Petrov's Defense: Classical Attack, Krause Variation a good opening?
Stockfish rates the position at −0.47: black 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: Classical Attack, Krause Variation?
C42. 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+).