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Pterodactyl Defense: Eastern, Benoni Pterodactyl

4.2K games from Lichess · Updated January 2026

Playable
White Expected Score50.9%Range (90% confident): 49.6% – 52.1%Based on 4.2K games
0%50.9%100%
Range (90% confident): 49.6% – 52.1%
Outcome Distribution
49.5%2.6%47.8%
Win
Draw
Loss
4...Qa5
Pterodactyl Defense: Eastern, Benoni Pterodactyl
Analyzen=4.2K
Avg Length33 moves
Sharpness97%
Draw Rate2.6%

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

Snapshot

At all ratings, the Pterodactyl Defense: Eastern, Benoni Pterodactyl has a 50.9% expected score for White (we're 90% confident it's between 49.6% and 52.1%), based on 4.2K Lichess games.

White Win% by Rating

Improves with rating: 43% → 53%

0
1000
1200
1400
1600
1800
2000
2200
2500+

  • 0-999: 43.1% win rate (53 games)
  • 1000-1199: 51.4% win rate (126 games)
  • 1200-1399: 51.5% win rate (289 games)
  • 1400-1599: 50.4% win rate (603 games)
  • 1600-1799: 49.4% win rate (766 games)
  • 1800-1999: 52.9% win rate (640 games)
  • 2000-2199: 44.5% win rate (701 games)
  • 2200-2499: 48.7% win rate (747 games)
  • 2500+: 52.8% win rate (295 games)

White Win% by Time Control

Best in Rapid (52%), worst in Classical (38%)

UltraBullet
Bullet
Blitz
Rapid
Classical

  • UltraBullet: 42.9% win rate (2 games)
  • Bullet: 49.3% win rate (1,946 games)
  • Blitz: 49.3% win rate (1,832 games)
  • Rapid: 51.9% win rate (427 games)
  • Classical: 37.9% win rate (13 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: 45.3% expected score (9 games)
  • 0-999 rating, Blitz: 44.2% expected score (41 games)
  • 0-999 rating, Rapid: 61.2% expected score (3 games)
  • 1000-1199 rating, Bullet: 54.1% expected score (35 games)
  • 1000-1199 rating, Blitz: 54.8% expected score (82 games)
  • 1000-1199 rating, Rapid: 35.7% expected score (9 games)
  • 1200-1399 rating, Bullet: 55.5% expected score (81 games)
  • 1200-1399 rating, Blitz: 53.4% expected score (161 games)
  • 1200-1399 rating, Rapid: 41.8% expected score (47 games)
  • 1400-1599 rating, UltraBullet: 30.0% expected score (1 games)
  • 1400-1599 rating, Bullet: 45.7% expected score (135 games)
  • 1400-1599 rating, Blitz: 53.5% expected score (341 games)
  • 1400-1599 rating, Rapid: 52.8% expected score (124 games)
  • 1400-1599 rating, Classical: 21.5% expected score (2 games)
  • 1600-1799 rating, Bullet: 49.5% expected score (256 games)
  • 1600-1799 rating, Blitz: 49.7% expected score (373 games)
  • 1600-1799 rating, Rapid: 56.3% expected score (134 games)
  • 1600-1799 rating, Classical: 38.9% expected score (3 games)
  • 1800-1999 rating, Bullet: 54.7% expected score (210 games)
  • 1800-1999 rating, Blitz: 52.5% expected score (345 games)
  • 1800-1999 rating, Rapid: 59.4% expected score (79 games)
  • 1800-1999 rating, Classical: 56.7% expected score (6 games)
  • 2000-2199 rating, UltraBullet: 70.0% expected score (1 games)
  • 2000-2199 rating, Bullet: 44.1% expected score (337 games)
  • 2000-2199 rating, Blitz: 47.4% expected score (340 games)
  • 2000-2199 rating, Rapid: 52.2% expected score (21 games)
  • 2000-2199 rating, Classical: 50.0% expected score (2 games)
  • 2200-2499 rating, Bullet: 50.7% expected score (601 games)
  • 2200-2499 rating, Blitz: 48.2% expected score (136 games)
  • 2200-2499 rating, Rapid: 45.7% expected score (10 games)
  • 2500+ rating, Bullet: 55.8% expected score (282 games)
  • 2500+ rating, Blitz: 43.1% expected score (13 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, Benoni Pterodactyl PositionsGet move-by-move win rates with the TrueElo analyzer

Frequently Asked Questions

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

The Pterodactyl Defense: Eastern, Benoni Pterodactyl has a 49.5% (90% CI: 48.3%-50.8%) win rate for white, based on 4.2K rated games from Lichess.

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

The Pterodactyl Defense: Eastern, Benoni Pterodactyl performs best at 1800-1999 Elo with a 52.9% win rate for white (640 games). Win rate tends to decline at higher ratings as opponents know the theory better.

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

Rapid (51.9%) outperforms Bullet (49.3%) by 2.6%. Choose your time control wisely.

How sharp is the Pterodactyl Defense: Eastern, Benoni Pterodactyl?

The Pterodactyl Defense: Eastern, Benoni Pterodactyl has a sharpness score of 97.4 (very decisive), meaning 97.4% of games end decisively. Average game length is 33 moves.

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

At 1000-1199 Elo, the Pterodactyl Defense: Eastern, Benoni Pterodactyl has a 51.4% (90% CI: 44.1%-58.6%) win rate for white, based on 126 Lichess games. Average game length is 28 moves with a 3.5% draw rate.

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

At 1200-1399 Elo, the Pterodactyl Defense: Eastern, Benoni Pterodactyl has a 51.5% (90% CI: 46.6%-56.3%) win rate for white, based on 289 Lichess games. Average game length is 26 moves with a 1.2% draw rate.

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

At 1400-1599 Elo, the Pterodactyl Defense: Eastern, Benoni Pterodactyl has a 50.4% (90% CI: 47.0%-53.7%) win rate for white, based on 603 Lichess games. Average game length is 32 moves with a 1.9% draw rate.

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

At 1600-1799 Elo, the Pterodactyl Defense: Eastern, Benoni Pterodactyl has a 49.4% (90% CI: 46.5%-52.4%) win rate for white, based on 766 Lichess games. Average game length is 33 moves with a 2.5% draw rate.

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

At 1800-1999 Elo, the Pterodactyl Defense: Eastern, Benoni Pterodactyl has a 52.9% (90% CI: 49.7%-56.2%) win rate for white, based on 640 Lichess games. Average game length is 33 moves with a 2.4% draw rate.

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

At 2000-2199 Elo, the Pterodactyl Defense: Eastern, Benoni Pterodactyl has a 44.5% (90% CI: 41.4%-47.6%) win rate for white, based on 701 Lichess games. Average game length is 34 moves with a 3.1% draw rate.

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

At 2200-2499 Elo, the Pterodactyl Defense: Eastern, Benoni Pterodactyl has a 48.7% (90% CI: 45.7%-51.7%) win rate for white, based on 747 Lichess games. Average game length is 36 moves with a 2.9% draw rate.

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

At 2500+ Elo, the Pterodactyl Defense: Eastern, Benoni Pterodactyl has a 52.8% (90% CI: 48.0%-57.5%) win rate for white, based on 295 Lichess games. Average game length is 41 moves with a 4.9% draw rate.

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

In Bullet games, the Pterodactyl Defense: Eastern, Benoni Pterodactyl has a 49.3% (90% CI: 47.4%-51.1%) win rate for white (1.9K Lichess games). Draw rate is 2.3%.

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

In Blitz games, the Pterodactyl Defense: Eastern, Benoni Pterodactyl has a 49.3% (90% CI: 47.4%-51.3%) win rate for white (1.8K Lichess games). Draw rate is 2.9%.

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

In Rapid games, the Pterodactyl Defense: Eastern, Benoni Pterodactyl has a 51.9% (90% CI: 48.0%-55.9%) win rate for white (427 Lichess games). Draw rate is 2.9%.

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

The Pterodactyl Defense: Eastern, Benoni Pterodactyl is statistically balanced with a 49.5% (90% CI: 48.3%-50.8%) win rate across all ratings. It performs best at 1800-1999 Elo. Your results depend on your rating, time control, and how well you know the typical plans.