Sicilian Defense: Hyperaccelerated Pterodactyl, Exchange Variation
Play any move on the board to explore from there, or step through the line with ‹ › and the arrow keys.
Statistics from Lichess
29,659 games: White 48.3% / Draw 4.7% / Black 47.0%
| Next move | Games | White / Draw / BlackW / D / B |
|---|---|---|
| 29,08029K | ||
| 343343 | ||
| 188188 | ||
| 4848 |
Rated Lichess games between players rated 1600 to 2500, from the Lichess opening explorer, updated Nov 5, 2026
Engine evaluation
+0.21 The position is about equal
Best play: 7. Bd2 Qxc5 8. Bd3 d6 9. O-O Nf6 10. h3 O-O 11. a4 Be6
Stockfish 19, depth 30, after the line's last move. Scores are in pawns, from White's side.
Overview
Sicilian Defense: Hyperaccelerated Pterodactyl, Exchange Variation (ECO B27, Semi-Open Games) is a variation of the Pterodactyl Defense: Sicilian, Pteranodon, reached after 1. e4 c5 2. Nf3 g6 3. d4 Bg7 4. dxc5 Qa5+ 5. Nc3 Bxc3+ 6. bxc3 Qxc3+ (6 moves).
In 29,659 rated Lichess games between players rated 1600 to 2500, White won 48.3%, Black 47.0% and 4.7% were drawn. White's most played move here is 7. Bd2, in 98% of those games.
Written from the Lichess opening list and explorer. Know this line well? Write about it.
Write a description or report a mistake
Cite this page
Caissa Codex. “Sicilian Defense: Hyperaccelerated Pterodactyl, Exchange Variation (B27)”. Lichess data as of 5 Nov 2026. https://chesscodex.org/openings/sicilian-defense-hyperaccelerated-pterodactyl-exchange-variation