ECO C41 · Philidor Defense

Philidor Defense: Philidor Countergambit, del Rio Attack

1. e4 e5 2. Nf3 d6 3. d4 f5 4. dxe5 fxe4 5. Ng5 d5 6. e6

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

6… Nf6+1.11

White is clearly better. Stockfish 18, depth 18.

Analyze this position

In the Philidor Defense: Philidor Countergambit, del Rio Attack (C41), reached after 1. e4 e5 2. Nf3 d6 3. d4 f5 4. dxe5 fxe4 5. Ng5 d5 6. e6, Stockfish 18 recommends 6… Nf6 for Black. White is clearly better (+1.11).

Top engine moves

  1. +1.116… Nf6 7. Nf7 Qe7 8. Nxh8 Bxe6 9. Nc3 Nc6 10. Bb5 Qd7 11. Bxc6
  2. +1.226… Nc6 7. Bb5 Bc5 8. Nxe4 Bb4+ 9. c3 dxe4 10. Qh5+ g6 11. Qe5
  3. +1.476… Bc5 7. Nxe4 Bb4+ 8. c3 dxe4 9. Qh5+ g6 10. Qe5 Qf6 11. Qxc7

Frequently asked questions

What is the best move in the Philidor Defense: Philidor Countergambit, del Rio Attack?
After 1. e4 e5 2. Nf3 d6 3. d4 f5 4. dxe5 fxe4 5. Ng5 d5 6. e6, Stockfish 18 at depth 18 recommends 6… Nf6 for Black, continuing 7. Nf7 Qe7 8. Nxh8 Bxe6 9. Nc3 Nc6 10. Bb5 Qd7 11. Bxc6. White is clearly better (+1.11). The next best moves are 6… Nc6 (+1.22) and 6… Bc5 (+1.47).
Is the Philidor Defense: Philidor Countergambit, del Rio Attack a good opening?
Stockfish rates the position at +1.11: white is clearly 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 Philidor Defense: Philidor Countergambit, del Rio Attack?
C41. 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+).