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Pterodactyl Defense: Sicilian, Siroccopteryx

1.5K games from Lichess · Updated January 2026

Tough Sell
White Expected Score36.1%Range (90% confident): 34.0% – 38.2%Based on 1.5K games
0%36.1%100%
Range (90% confident): 34.0% – 38.2%
Outcome Distribution
34.8%2.5%62.7%
Win
Draw
Loss
5.Bc4
Pterodactyl Defense: Sicilian, Siroccopteryx
Analyzen=1.5K
Avg Length29 moves
Sharpness98%
Draw Rate2.5%

What is the Pterodactyl Defense: Sicilian, Siroccopteryx expected score for White?

Snapshot

At all ratings, the Pterodactyl Defense: Sicilian, Siroccopteryx has a 36.1% expected score for White (we're 90% confident it's between 34.0% and 38.2%), based on 1.5K Lichess games.

Extra Analysis

Deep-dive datasets for this opening

Time-Control Swing

Max swing: 9.7% · Rapid best · Blitz worst

White Win% by Rating

Declines with rating: 39% → 26%

0
1000
1200
1400
1600
1800
2000
2200
2500+

  • 0-999: 39.2% win rate (38 games)
  • 1000-1199: 52.0% win rate (36 games)
  • 1200-1399: 43.8% win rate (75 games)
  • 1400-1599: 43.7% win rate (105 games)
  • 1600-1799: 46.7% win rate (128 games)
  • 1800-1999: 44.6% win rate (188 games)
  • 2000-2199: 31.1% win rate (405 games)
  • 2200-2499: 25.9% win rate (410 games)
  • 2500+: 25.8% win rate (74 games)

White Win% by Time Control

Best in Classical (54%), worst in Blitz (33%)

Bullet
Blitz
Rapid
Classical

  • Bullet: 35.0% win rate (491 games)
  • Blitz: 33.4% win rate (845 games)
  • Rapid: 43.1% win rate (118 games)
  • Classical: 53.8% win rate (5 games)

White% by Rating × Time Control

Click any cell to filter. Green = above 50%, Red = below 50%.

RatingUBBulleBlitzRapidClass
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

  • 0-999 rating, Bullet: 38.9% expected score (3 games)
  • 0-999 rating, Blitz: 41.3% expected score (33 games)
  • 0-999 rating, Rapid: 50.0% expected score (2 games)
  • 1000-1199 rating, Bullet: 60.6% expected score (8 games)
  • 1000-1199 rating, Blitz: 47.8% expected score (21 games)
  • 1000-1199 rating, Rapid: 55.9% expected score (7 games)
  • 1200-1399 rating, Bullet: 45.4% expected score (20 games)
  • 1200-1399 rating, Blitz: 43.3% expected score (28 games)
  • 1200-1399 rating, Rapid: 46.4% expected score (26 games)
  • 1200-1399 rating, Classical: 30.0% expected score (1 games)
  • 1400-1599 rating, Bullet: 32.0% expected score (29 games)
  • 1400-1599 rating, Blitz: 50.0% expected score (53 games)
  • 1400-1599 rating, Rapid: 50.0% expected score (22 games)
  • 1400-1599 rating, Classical: 70.0% expected score (1 games)
  • 1600-1799 rating, Bullet: 41.6% expected score (46 games)
  • 1600-1799 rating, Blitz: 50.0% expected score (55 games)
  • 1600-1799 rating, Rapid: 51.9% expected score (25 games)
  • 1600-1799 rating, Classical: 50.0% expected score (2 games)
  • 1800-1999 rating, Bullet: 51.9% expected score (52 games)
  • 1800-1999 rating, Blitz: 43.1% expected score (128 games)
  • 1800-1999 rating, Rapid: 55.3% expected score (8 games)
  • 2000-2199 rating, Bullet: 40.9% expected score (97 games)
  • 2000-2199 rating, Blitz: 29.5% expected score (295 games)
  • 2000-2199 rating, Rapid: 35.2% expected score (12 games)
  • 2000-2199 rating, Classical: 70.0% expected score (1 games)
  • 2200-2499 rating, Bullet: 28.4% expected score (165 games)
  • 2200-2499 rating, Blitz: 27.7% expected score (229 games)
  • 2200-2499 rating, Rapid: 24.3% expected score (16 games)
  • 2500+ rating, Bullet: 28.6% expected score (71 games)
  • 2500+ rating, Blitz: 16.7% expected score (3 games)

Related Openings

Parent
Pterodactyl Defense
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Variations (5)
Pterodactyl Defense: Austrian, Austriadactylus Western
41.1%
Pterodactyl Defense: Austrian, Grand Prix Pterodactyl
53.8%
Pterodactyl Defense: Austrian, Pteranodon
41.2%
Pterodactyl Defense: Central, Anhanguera
38.0%
Pterodactyl Defense: Central, Benoni Beefeater Pterodactyl
48.8%
Analyze Pterodactyl Defense: Sicilian, Siroccopteryx PositionsGet move-by-move win rates with the TrueElo analyzer

Frequently Asked Questions

What is the Pterodactyl Defense: Sicilian, Siroccopteryx win rate?

The Pterodactyl Defense: Sicilian, Siroccopteryx has a 34.8% (90% CI: 32.8%-36.9%) win rate for white, based on 1.5K rated games from Lichess.

At what rating does the Pterodactyl Defense: Sicilian, Siroccopteryx perform best?

The Pterodactyl Defense: Sicilian, Siroccopteryx performs best at 1600-1799 Elo with a 46.7% win rate for white (128 games). Win rate tends to decline at higher ratings as opponents know the theory better.

Is the Pterodactyl Defense: Sicilian, Siroccopteryx better in blitz or rapid?

Rapid (43.1%) outperforms Blitz (33.4%) by 9.7%. Choose your time control wisely.

How sharp is the Pterodactyl Defense: Sicilian, Siroccopteryx?

The Pterodactyl Defense: Sicilian, Siroccopteryx has a sharpness score of 97.5 (very decisive), meaning 97.5% of games end decisively. Average game length is 29 moves.

What is the Pterodactyl Defense: Sicilian, Siroccopteryx win rate at 1400-1599 Elo?

At 1400-1599 Elo, the Pterodactyl Defense: Sicilian, Siroccopteryx has a 43.7% (90% CI: 35.9%-51.6%) win rate for white, based on 105 Lichess games. Average game length is 29 moves with a 3.3% draw rate.

What is the Pterodactyl Defense: Sicilian, Siroccopteryx win rate at 1600-1799 Elo?

At 1600-1799 Elo, the Pterodactyl Defense: Sicilian, Siroccopteryx has a 46.7% (90% CI: 39.6%-53.9%) win rate for white, based on 128 Lichess games. Average game length is 29 moves with a 1.2% draw rate.

What is the Pterodactyl Defense: Sicilian, Siroccopteryx win rate at 1800-1999 Elo?

At 1800-1999 Elo, the Pterodactyl Defense: Sicilian, Siroccopteryx has a 44.6% (90% CI: 38.7%-50.5%) win rate for white, based on 188 Lichess games. Average game length is 30 moves with a 2.9% draw rate.

What is the Pterodactyl Defense: Sicilian, Siroccopteryx win rate at 2000-2199 Elo?

At 2000-2199 Elo, the Pterodactyl Defense: Sicilian, Siroccopteryx has a 31.1% (90% CI: 27.4%-34.9%) win rate for white, based on 405 Lichess games. Average game length is 30 moves with a 2.6% draw rate.

What is the Pterodactyl Defense: Sicilian, Siroccopteryx win rate at 2200-2499 Elo?

At 2200-2499 Elo, the Pterodactyl Defense: Sicilian, Siroccopteryx has a 25.9% (90% CI: 22.4%-29.5%) win rate for white, based on 410 Lichess games. Average game length is 30 moves with a 3.5% draw rate.

What is the Pterodactyl Defense: Sicilian, Siroccopteryx win rate in Bullet?

In Bullet games, the Pterodactyl Defense: Sicilian, Siroccopteryx has a 35.0% (90% CI: 31.5%-38.6%) win rate for white (491 Lichess games). Draw rate is 1.7%.

What is the Pterodactyl Defense: Sicilian, Siroccopteryx win rate in Blitz?

In Blitz games, the Pterodactyl Defense: Sicilian, Siroccopteryx has a 33.4% (90% CI: 30.7%-36.1%) win rate for white (845 Lichess games). Draw rate is 2.9%.

What is the Pterodactyl Defense: Sicilian, Siroccopteryx win rate in Rapid?

In Rapid games, the Pterodactyl Defense: Sicilian, Siroccopteryx has a 43.1% (90% CI: 35.7%-50.6%) win rate for white (118 Lichess games). Draw rate is 3.8%.

Is the Pterodactyl Defense: Sicilian, Siroccopteryx a good opening?

The Pterodactyl Defense: Sicilian, Siroccopteryx is slightly favors black with a 34.8% (90% CI: 32.8%-36.9%) win rate across all ratings. It performs best at 1600-1799 Elo. Your results depend on your rating, time control, and how well you know the typical plans.