Pterodactyl Defense: Sicilian, Rhamphorhynchus
1. e4 c5 2. Nf3 g6 3. d4 Bg7 4. dxc5 Qa5+ 5. Nc3
5… Bxc3++0.07
The position is roughly equal. Stockfish 18, depth 18.
Analyze this positionIn the Pterodactyl Defense: Sicilian, Rhamphorhynchus (B27), reached after 1. e4 c5 2. Nf3 g6 3. d4 Bg7 4. dxc5 Qa5+ 5. Nc3, Stockfish 18 recommends 5… Bxc3+ for Black. The position is roughly equal (+0.07).
Top engine moves
- +0.075… Bxc3+ 6. bxc3 Qxc3+ 7. Bd2 Qxc5 8. Bd3 Nf6 9. O-O d6 10. h3
- +0.505… Nc6 6. Bd3 Nf6 7. Be3 Ng4 8. Bd2 Qxc5 9. O-O O-O 10. h3
- +0.635… Nf6 6. e5 Ne4 7. Qd4 Nxc3 8. Bd2 b6 9. Bxc3 Qxc5 10. Qxc5
Frequently asked questions
What is the best move in the Pterodactyl Defense: Sicilian, Rhamphorhynchus?
After 1. e4 c5 2. Nf3 g6 3. d4 Bg7 4. dxc5 Qa5+ 5. Nc3, Stockfish 18 at depth 18 recommends 5… Bxc3+ for Black, continuing 6. bxc3 Qxc3+ 7. Bd2 Qxc5 8. Bd3 Nf6 9. O-O d6 10. h3. The position is roughly equal (+0.07). The next best moves are 5… Nc6 (+0.50) and 5… Nf6 (+0.63).
Is the Pterodactyl Defense: Sicilian, Rhamphorhynchus a good opening?
Stockfish rates the position at +0.07: 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 Pterodactyl Defense: Sicilian, Rhamphorhynchus?
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+).