1. e4 c5 2. Nf3 g6 3. d4 Bg7 4. dxc5 Qa5+
Chess openings · Pterodactyl Defense · B27
Pterodactyl Defense: Western, Rhamphorhynchus
4,599 rated games in September 2026 began with 1. e4 c5 2. Nf3 g6 3. d4 Bg7 4. dxc5 Qa5+. White wins 48%, draws 4%, Black wins 48%.
Results by rating
| Lichess rating | Games | White winsDrawBlack wins |
|---|---|---|
| Under 1200 | 150 | 47%51% |
| 1200–1599 | 1,003 | 45%52% |
| 1600–1999 | 2,019 | 48%48% |
| 2000 and up | 1,427 | 49%45% |
| All ratings | 4,599 | 48%48% |
By time control
| Time control | Games | |
|---|---|---|
| Bullet | 1,540 | 48%50% |
| Blitz | 2,398 | 48%48% |
| Rapid | 630 | 49%46% |
| Classical | 31 | 39%13%48% |