ECO C48 · Four Knights Game

Four Knights Game: Spanish Variation, Classical Variation

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bc5

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

5. O-O+0.43

White is slightly better. Stockfish 18, depth 18.

Analyze this position

In the Four Knights Game: Spanish Variation, Classical Variation (C48), reached after 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bc5, Stockfish 18 recommends 5. O-O for White. White is slightly better (+0.43).

Top engine moves

  1. +0.435. O-O O-O 6. Nxe5 Nd4 7. Bc4 d6 8. Nf3 Bg4 9. Be2 Nxe2+
  2. +0.425. Nxe5 Nxe5 6. d4 Bd6 7. O-O c6 8. dxe5 Bxe5 9. Bd3 O-O
  3. +0.195. d3 Nd4 6. Nxe5 c6 7. Bc4 d5 8. exd5 O-O 9. O-O cxd5

Frequently asked questions

What is the best move in the Four Knights Game: Spanish Variation, Classical Variation?
After 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bc5, Stockfish 18 at depth 18 recommends 5. O-O for White, continuing O-O 6. Nxe5 Nd4 7. Bc4 d6 8. Nf3 Bg4 9. Be2 Nxe2+. White is slightly better (+0.43). The next best moves are 5. Nxe5 (+0.42) and 5. d3 (+0.19).
Is the Four Knights Game: Spanish Variation, Classical Variation a good opening?
Stockfish rates the position at +0.43: 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, Classical 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+).