2.8K games from Lichess · Updated January 2026
At all ratings, the Pterodactyl Defense: Sicilian, Unpin has a 47.5% expected score for White (we're 90% confident it's between 45.9% and 49.0%), based on 2.8K Lichess games.
Deep-dive datasets for this opening
Declines with rating: 46% → 37%
Best in UltraBullet (64%), worst in Bullet (44%)
Click any cell to filter. Green = above 50%, Red = below 50%.
| Rating | UB | Bulle | Blitz | Rapid | Class |
|---|---|---|---|---|---|
| 0-999 | — | — | |||
| 1000-1199 | — | — | |||
| 1200-1399 | |||||
| 1400-1599 | |||||
| 1600-1799 | — | ||||
| 1800-1999 | |||||
| 2000-2199 | — | ||||
| 2200-2499 | — | — | |||
| 2500+ | — | — | — |
Expected score matrix by rating bracket and time control
The Pterodactyl Defense: Sicilian, Unpin has a 45.8% (90% CI: 44.2%-47.3%) win rate for white, based on 2.8K rated games from Lichess.
The Pterodactyl Defense: Sicilian, Unpin performs best at 1400-1599 Elo with a 52.6% win rate for white (317 games). Win rate tends to decline at higher ratings as opponents know the theory better.
Rapid (52.8%) outperforms Bullet (44.4%) by 8.4%. Choose your time control wisely.
The Pterodactyl Defense: Sicilian, Unpin has a sharpness score of 96.6 (very decisive), meaning 96.6% of games end decisively. Average game length is 31 moves.
At 0-999 Elo, the Pterodactyl Defense: Sicilian, Unpin has a 45.7% (90% CI: 38.4%-53.1%) win rate for white, based on 122 Lichess games. Average game length is 26 moves with a 2.0% draw rate.
At 1000-1199 Elo, the Pterodactyl Defense: Sicilian, Unpin has a 49.8% (90% CI: 43.3%-56.4%) win rate for white, based on 154 Lichess games. Average game length is 25 moves with a 6.1% draw rate.
At 1200-1399 Elo, the Pterodactyl Defense: Sicilian, Unpin has a 52.3% (90% CI: 47.1%-57.4%) win rate for white, based on 250 Lichess games. Average game length is 28 moves with a 4.2% draw rate.
At 1400-1599 Elo, the Pterodactyl Defense: Sicilian, Unpin has a 52.6% (90% CI: 48.0%-57.2%) win rate for white, based on 317 Lichess games. Average game length is 28 moves with a 2.4% draw rate.
At 1600-1799 Elo, the Pterodactyl Defense: Sicilian, Unpin has a 44.2% (90% CI: 40.1%-48.3%) win rate for white, based on 396 Lichess games. Average game length is 31 moves with a 2.9% draw rate.
At 1800-1999 Elo, the Pterodactyl Defense: Sicilian, Unpin has a 43.2% (90% CI: 39.2%-47.3%) win rate for white, based on 409 Lichess games. Average game length is 31 moves with a 3.3% draw rate.
At 2000-2199 Elo, the Pterodactyl Defense: Sicilian, Unpin has a 44.1% (90% CI: 40.4%-47.8%) win rate for white, based on 492 Lichess games. Average game length is 32 moves with a 3.1% draw rate.
At 2200-2499 Elo, the Pterodactyl Defense: Sicilian, Unpin has a 44.0% (90% CI: 40.4%-47.6%) win rate for white, based on 511 Lichess games. Average game length is 36 moves with a 4.2% draw rate.
At 2500+ Elo, the Pterodactyl Defense: Sicilian, Unpin has a 36.8% (90% CI: 29.9%-43.9%) win rate for white, based on 125 Lichess games. Average game length is 40 moves with a 5.1% draw rate.
In Bullet games, the Pterodactyl Defense: Sicilian, Unpin has a 44.4% (90% CI: 42.1%-46.6%) win rate for white (1.3K Lichess games). Draw rate is 2.2%.
In Blitz games, the Pterodactyl Defense: Sicilian, Unpin has a 46.0% (90% CI: 43.7%-48.3%) win rate for white (1.3K Lichess games). Draw rate is 4.2%.
In Rapid games, the Pterodactyl Defense: Sicilian, Unpin has a 52.8% (90% CI: 46.8%-58.9%) win rate for white (183 Lichess games). Draw rate is 6.2%.
The Pterodactyl Defense: Sicilian, Unpin is slightly favors black with a 45.8% (90% CI: 44.2%-47.3%) win rate across all ratings. It performs best at 1400-1599 Elo. Your results depend on your rating, time control, and how well you know the typical plans.