ECO C77 · Ruy Lopez

Ruy Lopez: Morphy Defense, Duras Variation

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. d3 d6 6. c4

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

6… g6+0.14

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

Analyze this position

In the Ruy Lopez: Morphy Defense, Duras Variation (C77), reached after 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. d3 d6 6. c4, Stockfish 18 recommends 6… g6 for Black. The position is roughly equal (+0.14).

Top engine moves

  1. +0.146… g6 7. Nc3 Bg7 8. Nd5 h6 9. O-O O-O 10. h3 Nh5 11. Re1
  2. +0.186… Bg4 7. Nc3 Nd7 8. Be3 Be7 9. h3 Bxf3 10. Qxf3 O-O 11. Bxc6
  3. +0.216… Be7 7. h3 Nd7 8. Be3 Bf6 9. Nc3 Nd4 10. Nd5 O-O 11. Bc2

Frequently asked questions

What is the best move in the Ruy Lopez: Morphy Defense, Duras Variation?
After 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. d3 d6 6. c4, Stockfish 18 at depth 18 recommends 6… g6 for Black, continuing 7. Nc3 Bg7 8. Nd5 h6 9. O-O O-O 10. h3 Nh5 11. Re1. The position is roughly equal (+0.14). The next best moves are 6… Bg4 (+0.18) and 6… Be7 (+0.21).
Is the Ruy Lopez: Morphy Defense, Duras Variation a good opening?
Stockfish rates the position at +0.14: 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 Ruy Lopez: Morphy Defense, Duras Variation?
C77. 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+).