Pterodactyl Defense: Western, Siroccopteryx
1. e4 g6 2. Nf3 Bg7 3. d4 c5 4. Bc4 cxd4 5. Nxd4 Qa5+
6. c3+0.11
The position is roughly equal. Stockfish 18, depth 18.
Analyze this positionIn the Pterodactyl Defense: Western, Siroccopteryx (B06), reached after 1. e4 g6 2. Nf3 Bg7 3. d4 c5 4. Bc4 cxd4 5. Nxd4 Qa5+, Stockfish 18 recommends 6. c3 for White. The position is roughly equal (+0.11).
Top engine moves
- +0.116. c3 Nf6 7. Qe2 Nc6 8. O-O O-O 9. Re1 Nxd4 10. cxd4 d5
- −1.826. Nc3 Qc5 7. Be3 Qxc4 8. Nd5 Na6 9. b3 Qc5 10. Qd2 Qd6
- −2.036. Bd2 Qc7 7. Bc3 Qxc4 8. Nd2 Qa4 9. b3 Bxd4 10. bxa4 Bxc3
Frequently asked questions
What is the best move in the Pterodactyl Defense: Western, Siroccopteryx?
After 1. e4 g6 2. Nf3 Bg7 3. d4 c5 4. Bc4 cxd4 5. Nxd4 Qa5+, Stockfish 18 at depth 18 recommends 6. c3 for White, continuing Nf6 7. Qe2 Nc6 8. O-O O-O 9. Re1 Nxd4 10. cxd4 d5. The position is roughly equal (+0.11). The next best moves are 6. Nc3 (−1.82) and 6. Bd2 (−2.03).
Is the Pterodactyl Defense: Western, Siroccopteryx a good opening?
Stockfish rates the position at +0.11: 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: Western, 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+).