ECO B27 · Sicilian Defense

Sicilian Defense: Frederico Variation

1. e4 c5 2. Nf3 g6 3. d4 f5

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

4. exf5+2.11

White is winning. Stockfish 18, depth 18.

Analyze this position

In the Sicilian Defense: Frederico Variation (B27), reached after 1. e4 c5 2. Nf3 g6 3. d4 f5, Stockfish 18 recommends 4. exf5 for White. White is winning (+2.11).

Top engine moves

  1. +2.114. exf5 gxf5 5. Nc3 Nf6 6. Bg5 Bg7 7. Bc4 e6 8. d5 O-O
  2. +1.724. dxc5 fxe4 5. Ng5 Bg7 6. Nxe4 Nf6 7. Nbc3 Nxe4 8. Nxe4 O-O
  3. +1.684. Nc3 fxe4 5. Nxe4 Nf6 6. Nxc5 d6 7. Nb3 Bg7 8. Bc4 Qc7

Frequently asked questions

What is the best move in the Sicilian Defense: Frederico Variation?
After 1. e4 c5 2. Nf3 g6 3. d4 f5, Stockfish 18 at depth 18 recommends 4. exf5 for White, continuing gxf5 5. Nc3 Nf6 6. Bg5 Bg7 7. Bc4 e6 8. d5 O-O. White is winning (+2.11). The next best moves are 4. dxc5 (+1.72) and 4. Nc3 (+1.68).
Is the Sicilian Defense: Frederico Variation a good opening?
Stockfish rates the position at +2.11: white is winning. 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 Sicilian Defense: Frederico Variation?
B27. ECO codes classify chess openings from A00 to E99; B is the volume for semi-open games (other than the French).

Opening names from the Lichess opening book (CC0). Pieces by Colin M.L. Burnett (GPLv2+).