Pterodactyl Defense: Sicilian, Siroccopteryx
1. e4 g6 2. d4 Bg7 3. Nc3 c5 4. Nf3 Qa5 5. Bc4
5… cxd4−1.77
Black is clearly better. Stockfish 18, depth 18.
Analyze this positionIn the Pterodactyl Defense: Sicilian, Siroccopteryx (B06), reached after 1. e4 g6 2. d4 Bg7 3. Nc3 c5 4. Nf3 Qa5 5. Bc4, Stockfish 18 recommends 5… cxd4 for Black. Black is clearly better (−1.77).
Top engine moves
- −1.775… cxd4 6. Nxd4 Qc5 7. Be3 Qxc4 8. Nd5 Na6 9. b3 Qc5 10. Qd2
- −0.365… Nc6 6. O-O cxd4 7. Nd5 d6 8. Bf4 Nf6 9. Nxd4 Nxd5 10. Nxc6
- +0.095… Nf6 6. O-O cxd4 7. Qxd4 O-O 8. Bd2 d6 9. h3 Nbd7
Frequently asked questions
What is the best move in the Pterodactyl Defense: Sicilian, Siroccopteryx?
After 1. e4 g6 2. d4 Bg7 3. Nc3 c5 4. Nf3 Qa5 5. Bc4, Stockfish 18 at depth 18 recommends 5… cxd4 for Black, continuing 6. Nxd4 Qc5 7. Be3 Qxc4 8. Nd5 Na6 9. b3 Qc5 10. Qd2. Black is clearly better (−1.77). The next best moves are 5… Nc6 (−0.36) and 5… Nf6 (+0.09).
Is the Pterodactyl Defense: Sicilian, Siroccopteryx a good opening?
Stockfish rates the position at −1.77: black 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 Pterodactyl Defense: Sicilian, Siroccopteryx?
B06. 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+).