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Pterodactyl Defense: Eastern, Pterodactyl

42K games from Lichess · Updated January 2026

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White Expected Score55.0%Range (90% confident): 54.6% – 55.4%Based on 42K games
0%55.0%100%
Range (90% confident): 54.6% – 55.4%
Outcome Distribution
53.2%3.6%43.2%
Win
Draw
Loss
4...Qa5
Pterodactyl Defense: Eastern, Pterodactyl
Analyzen=42K
Avg Length34 moves
Sharpness96%
Draw Rate3.6%

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

Snapshot

At all ratings, the Pterodactyl Defense: Eastern, Pterodactyl has a 55.0% expected score for White (we're 90% confident it's between 54.6% and 55.4%), based on 42K Lichess games.

White Win% by Rating

Improves with rating: 39% → 57%

0
1000
1200
1400
1600
1800
2000
2200
2500+

  • 0-999: 39.0% win rate (128 games)
  • 1000-1199: 47.4% win rate (377 games)
  • 1200-1399: 49.0% win rate (824 games)
  • 1400-1599: 48.1% win rate (1,674 games)
  • 1600-1799: 48.4% win rate (3,175 games)
  • 1800-1999: 49.5% win rate (6,163 games)
  • 2000-2199: 53.3% win rate (9,894 games)
  • 2200-2499: 55.6% win rate (13,895 games)
  • 2500+: 56.5% win rate (5,831 games)

White Win% by Time Control

Best in UltraBullet (63%), worst in Classical (47%)

UltraBullet
Bullet
Blitz
Rapid
Classical

  • UltraBullet: 62.8% win rate (20 games)
  • Bullet: 53.5% win rate (24,394 games)
  • Blitz: 52.6% win rate (15,555 games)
  • Rapid: 54.5% win rate (1,899 games)
  • Classical: 47.1% win rate (93 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: 28.5% expected score (38 games)
  • 0-999 rating, Blitz: 45.8% expected score (81 games)
  • 0-999 rating, Rapid: 54.8% expected score (9 games)
  • 1000-1199 rating, UltraBullet: 70.0% expected score (1 games)
  • 1000-1199 rating, Bullet: 48.2% expected score (159 games)
  • 1000-1199 rating, Blitz: 51.2% expected score (168 games)
  • 1000-1199 rating, Rapid: 46.1% expected score (49 games)
  • 1200-1399 rating, Bullet: 43.6% expected score (273 games)
  • 1200-1399 rating, Blitz: 53.0% expected score (436 games)
  • 1200-1399 rating, Rapid: 55.8% expected score (111 games)
  • 1200-1399 rating, Classical: 31.9% expected score (4 games)
  • 1400-1599 rating, UltraBullet: 73.1% expected score (5 games)
  • 1400-1599 rating, Bullet: 46.4% expected score (660 games)
  • 1400-1599 rating, Blitz: 51.4% expected score (795 games)
  • 1400-1599 rating, Rapid: 51.5% expected score (203 games)
  • 1400-1599 rating, Classical: 30.0% expected score (11 games)
  • 1600-1799 rating, UltraBullet: 55.9% expected score (7 games)
  • 1600-1799 rating, Bullet: 45.2% expected score (1,369 games)
  • 1600-1799 rating, Blitz: 53.2% expected score (1,420 games)
  • 1600-1799 rating, Rapid: 53.8% expected score (361 games)
  • 1600-1799 rating, Classical: 44.9% expected score (18 games)
  • 1800-1999 rating, UltraBullet: 65.4% expected score (5 games)
  • 1800-1999 rating, Bullet: 50.6% expected score (2,724 games)
  • 1800-1999 rating, Blitz: 51.4% expected score (3,001 games)
  • 1800-1999 rating, Rapid: 53.9% expected score (397 games)
  • 1800-1999 rating, Classical: 52.7% expected score (36 games)
  • 2000-2199 rating, Bullet: 54.5% expected score (4,703 games)
  • 2000-2199 rating, Blitz: 54.8% expected score (4,744 games)
  • 2000-2199 rating, Rapid: 58.3% expected score (430 games)
  • 2000-2199 rating, Classical: 55.5% expected score (17 games)
  • 2200-2499 rating, UltraBullet: 50.0% expected score (2 games)
  • 2200-2499 rating, Bullet: 57.1% expected score (9,182 games)
  • 2200-2499 rating, Blitz: 58.0% expected score (4,374 games)
  • 2200-2499 rating, Rapid: 65.4% expected score (330 games)
  • 2200-2499 rating, Classical: 73.6% expected score (7 games)
  • 2500+ rating, Bullet: 59.1% expected score (5,286 games)
  • 2500+ rating, Blitz: 58.5% expected score (536 games)
  • 2500+ rating, Rapid: 64.3% expected score (9 games)

Related Openings

Parent
Pterodactyl Defense
44.0%
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: Eastern, Pterodactyl PositionsGet move-by-move win rates with the TrueElo analyzer

Frequently Asked Questions

What is the Pterodactyl Defense: Eastern, Pterodactyl win rate?

The Pterodactyl Defense: Eastern, Pterodactyl has a 53.2% (90% CI: 52.8%-53.6%) win rate for white, based on 42K rated games from Lichess.

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

The Pterodactyl Defense: Eastern, Pterodactyl performs best at 2500+ Elo with a 56.5% win rate for white (5.8K games). Win rate tends to decline at higher ratings as opponents know the theory better.

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

Bullet (53.5%) outperforms Classical (47.1%) by 6.4%. Choose your time control wisely.

How sharp is the Pterodactyl Defense: Eastern, Pterodactyl?

The Pterodactyl Defense: Eastern, Pterodactyl has a sharpness score of 96.4 (very decisive), meaning 96.4% of games end decisively. Average game length is 34 moves.

What is the Pterodactyl Defense: Eastern, Pterodactyl win rate at 0-999 Elo?

At 0-999 Elo, the Pterodactyl Defense: Eastern, Pterodactyl has a 39.0% (90% CI: 32.1%-46.1%) win rate for white, based on 128 Lichess games. Average game length is 23 moves with a 4.2% draw rate.

What is the Pterodactyl Defense: Eastern, Pterodactyl win rate at 1000-1199 Elo?

At 1000-1199 Elo, the Pterodactyl Defense: Eastern, Pterodactyl has a 47.4% (90% CI: 43.2%-51.6%) win rate for white, based on 377 Lichess games. Average game length is 27 moves with a 3.8% draw rate.

What is the Pterodactyl Defense: Eastern, Pterodactyl win rate at 1200-1399 Elo?

At 1200-1399 Elo, the Pterodactyl Defense: Eastern, Pterodactyl has a 49.0% (90% CI: 46.1%-51.9%) win rate for white, based on 824 Lichess games. Average game length is 28 moves with a 2.2% draw rate.

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

At 1400-1599 Elo, the Pterodactyl Defense: Eastern, Pterodactyl has a 48.1% (90% CI: 46.1%-50.1%) win rate for white, based on 1.7K Lichess games. Average game length is 30 moves with a 2.4% draw rate.

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

At 1600-1799 Elo, the Pterodactyl Defense: Eastern, Pterodactyl has a 48.4% (90% CI: 46.9%-49.9%) win rate for white, based on 3.2K Lichess games. Average game length is 32 moves with a 2.8% draw rate.

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

At 1800-1999 Elo, the Pterodactyl Defense: Eastern, Pterodactyl has a 49.5% (90% CI: 48.4%-50.5%) win rate for white, based on 6.2K Lichess games. Average game length is 34 moves with a 3.5% draw rate.

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

At 2000-2199 Elo, the Pterodactyl Defense: Eastern, Pterodactyl has a 53.3% (90% CI: 52.5%-54.1%) win rate for white, based on 9.9K Lichess games. Average game length is 33 moves with a 3.0% draw rate.

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

At 2200-2499 Elo, the Pterodactyl Defense: Eastern, Pterodactyl has a 55.6% (90% CI: 54.9%-56.3%) win rate for white, based on 14K Lichess games. Average game length is 34 moves with a 3.9% draw rate.

What is the Pterodactyl Defense: Eastern, Pterodactyl win rate at 2500+ Elo?

At 2500+ Elo, the Pterodactyl Defense: Eastern, Pterodactyl has a 56.5% (90% CI: 55.4%-57.6%) win rate for white, based on 5.8K Lichess games. Average game length is 38 moves with a 5.0% draw rate.

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

In Bullet games, the Pterodactyl Defense: Eastern, Pterodactyl has a 53.5% (90% CI: 52.9%-54.0%) win rate for white (24K Lichess games). Draw rate is 3.2%.

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

In Blitz games, the Pterodactyl Defense: Eastern, Pterodactyl has a 52.6% (90% CI: 52.0%-53.3%) win rate for white (16K Lichess games). Draw rate is 4.1%.

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

In Rapid games, the Pterodactyl Defense: Eastern, Pterodactyl has a 54.5% (90% CI: 52.7%-56.4%) win rate for white (1.9K Lichess games). Draw rate is 4.1%.

Is the Pterodactyl Defense: Eastern, Pterodactyl a good opening?

The Pterodactyl Defense: Eastern, Pterodactyl is statistically favors white with a 53.2% (90% CI: 52.8%-53.6%) win rate across all ratings. It performs best at 2500+ Elo. Your results depend on your rating, time control, and how well you know the typical plans.