ECO C48 · Four Knights Game

Four Knights Game: Spanish Variation, Bardeleben Variation

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bc5 5. O-O O-O 6. Nxe5 Nxe5 7. d4 Bd6 8. f4 Nc6 9. e5 Bb4

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

10. f5+0.70

White is slightly better. Stockfish 18, depth 18.

Analyze this position

In the Four Knights Game: Spanish Variation, Bardeleben Variation (C48), reached after 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bc5 5. O-O O-O 6. Nxe5 Nxe5 7. d4 Bd6 8. f4 Nc6 9. e5 Bb4, Stockfish 18 recommends 10. f5 for White. White is slightly better (+0.70).

Top engine moves

  1. +0.7010. f5 Bxc3 11. bxc3 Ne8 12. Ba3 d6 13. Qh5 g6 14. Qh6 Bxf5
  2. +0.4810. exf6 Qxf6 11. Ne2 a6 12. Bd3 Nxd4 13. Ng3 Bc5 14. Kh1 d5
  3. +0.3810. d5 Bxc3 11. bxc3 Nxd5 12. Qxd5 d6 13. exd6 cxd6 14. Bd3 Ne7

Frequently asked questions

What is the best move in the Four Knights Game: Spanish Variation, Bardeleben Variation?
After 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bc5 5. O-O O-O 6. Nxe5 Nxe5 7. d4 Bd6 8. f4 Nc6 9. e5 Bb4, Stockfish 18 at depth 18 recommends 10. f5 for White, continuing Bxc3 11. bxc3 Ne8 12. Ba3 d6 13. Qh5 g6 14. Qh6 Bxf5. White is slightly better (+0.70). The next best moves are 10. exf6 (+0.48) and 10. d5 (+0.38).
Is the Four Knights Game: Spanish Variation, Bardeleben Variation a good opening?
Stockfish rates the position at +0.70: 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 Four Knights Game: Spanish Variation, Bardeleben Variation?
C48. 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+).