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Pterodactyl Defense: Eastern, Benoni Pteranodon

1.9K games from Lichess · Updated January 2026

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White Expected Score57.7%Range (90% confident): 55.9% – 59.6%Based on 1.9K games
0%57.7%100%
Range (90% confident): 55.9% – 59.6%
Outcome Distribution
55.8%3.8%40.4%
Win
Draw
Loss
5...Qa5
Pterodactyl Defense: Eastern, Benoni Pteranodon
Analyzen=1.9K
Avg Length34 moves
Sharpness96%
Draw Rate3.8%

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

Snapshot

At all ratings, the Pterodactyl Defense: Eastern, Benoni Pteranodon has a 57.7% expected score for White (we're 90% confident it's between 55.9% and 59.6%), based on 1.9K Lichess games.

Extra Analysis

Deep-dive datasets for this opening

Time-Control Swing

Max swing: 8.7% · Rapid best · Bullet worst

White Win% by Rating

Declines with rating: 56% → 51%

0
1000
1200
1400
1600
1800
2000
2200
2500+

  • 0-999: 55.6% win rate (3 games)
  • 1000-1199: 55.6% win rate (30 games)
  • 1200-1399: 46.7% win rate (83 games)
  • 1400-1599: 60.6% win rate (143 games)
  • 1600-1799: 59.2% win rate (202 games)
  • 1800-1999: 58.8% win rate (321 games)
  • 2000-2199: 55.9% win rate (438 games)
  • 2200-2499: 53.6% win rate (524 games)
  • 2500+: 50.9% win rate (133 games)

White Win% by Time Control

Best in Classical (78%), worst in Bullet (53%)

UltraBullet
Bullet
Blitz
Rapid
Classical

  • UltraBullet: 60.0% win rate (1 games)
  • Bullet: 52.9% win rate (919 games)
  • Blitz: 57.9% win rate (833 games)
  • Rapid: 61.6% win rate (121 games)
  • Classical: 77.8% win rate (3 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: 30.0% expected score (1 games)
  • 0-999 rating, Blitz: 78.6% expected score (2 games)
  • 1000-1199 rating, Bullet: 59.1% expected score (15 games)
  • 1000-1199 rating, Blitz: 68.6% expected score (12 games)
  • 1000-1199 rating, Rapid: 16.7% expected score (3 games)
  • 1200-1399 rating, Bullet: 42.3% expected score (37 games)
  • 1200-1399 rating, Blitz: 50.0% expected score (37 games)
  • 1200-1399 rating, Rapid: 69.1% expected score (9 games)
  • 1400-1599 rating, Bullet: 51.1% expected score (47 games)
  • 1400-1599 rating, Blitz: 67.0% expected score (84 games)
  • 1400-1599 rating, Rapid: 71.8% expected score (10 games)
  • 1400-1599 rating, Classical: 78.6% expected score (2 games)
  • 1600-1799 rating, Bullet: 62.4% expected score (47 games)
  • 1600-1799 rating, Blitz: 60.6% expected score (127 games)
  • 1600-1799 rating, Rapid: 55.3% expected score (27 games)
  • 1600-1799 rating, Classical: 70.0% expected score (1 games)
  • 1800-1999 rating, UltraBullet: 70.0% expected score (1 games)
  • 1800-1999 rating, Bullet: 58.3% expected score (83 games)
  • 1800-1999 rating, Blitz: 62.2% expected score (200 games)
  • 1800-1999 rating, Rapid: 57.8% expected score (37 games)
  • 2000-2199 rating, Bullet: 53.5% expected score (200 games)
  • 2000-2199 rating, Blitz: 56.9% expected score (208 games)
  • 2000-2199 rating, Rapid: 84.9% expected score (30 games)
  • 2200-2499 rating, Bullet: 55.2% expected score (367 games)
  • 2200-2499 rating, Blitz: 59.1% expected score (152 games)
  • 2200-2499 rating, Rapid: 27.0% expected score (5 games)
  • 2500+ rating, Bullet: 54.1% expected score (122 games)
  • 2500+ rating, Blitz: 42.0% expected score (11 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: Eastern, Benoni Pteranodon PositionsGet move-by-move win rates with the TrueElo analyzer

Frequently Asked Questions

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

The Pterodactyl Defense: Eastern, Benoni Pteranodon has a 55.8% (90% CI: 53.9%-57.7%) win rate for white, based on 1.9K rated games from Lichess.

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

The Pterodactyl Defense: Eastern, Benoni Pteranodon performs best at 1800-1999 Elo with a 58.8% win rate for white (321 games). Win rate tends to decline at higher ratings as opponents know the theory better.

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

Blitz (57.9%) outperforms Bullet (52.9%) by 5.0%. Choose your time control wisely.

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

The Pterodactyl Defense: Eastern, Benoni Pteranodon has a sharpness score of 96.2 (very decisive), meaning 96.2% of games end decisively. Average game length is 34 moves.

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

At 1400-1599 Elo, the Pterodactyl Defense: Eastern, Benoni Pteranodon has a 60.6% (90% CI: 53.8%-67.1%) win rate for white, based on 143 Lichess games. Average game length is 31 moves with a 4.5% draw rate.

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

At 1600-1799 Elo, the Pterodactyl Defense: Eastern, Benoni Pteranodon has a 59.2% (90% CI: 53.5%-64.8%) win rate for white, based on 202 Lichess games. Average game length is 34 moves with a 2.7% draw rate.

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

At 1800-1999 Elo, the Pterodactyl Defense: Eastern, Benoni Pteranodon has a 58.8% (90% CI: 54.2%-63.2%) win rate for white, based on 321 Lichess games. Average game length is 33 moves with a 4.2% draw rate.

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

At 2000-2199 Elo, the Pterodactyl Defense: Eastern, Benoni Pteranodon has a 55.9% (90% CI: 52.0%-59.7%) win rate for white, based on 438 Lichess games. Average game length is 33 moves with a 3.1% draw rate.

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

At 2200-2499 Elo, the Pterodactyl Defense: Eastern, Benoni Pteranodon has a 53.6% (90% CI: 50.0%-57.1%) win rate for white, based on 524 Lichess games. Average game length is 36 moves with a 4.9% draw rate.

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

At 2500+ Elo, the Pterodactyl Defense: Eastern, Benoni Pteranodon has a 50.9% (90% CI: 43.9%-58.0%) win rate for white, based on 133 Lichess games. Average game length is 37 moves with a 4.1% draw rate.

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

In Bullet games, the Pterodactyl Defense: Eastern, Benoni Pteranodon has a 52.9% (90% CI: 50.1%-55.6%) win rate for white (919 Lichess games). Draw rate is 3.5%.

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

In Blitz games, the Pterodactyl Defense: Eastern, Benoni Pteranodon has a 57.9% (90% CI: 55.1%-60.7%) win rate for white (833 Lichess games). Draw rate is 4.1%.

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

In Rapid games, the Pterodactyl Defense: Eastern, Benoni Pteranodon has a 61.6% (90% CI: 54.3%-68.7%) win rate for white (121 Lichess games). Draw rate is 4.5%.

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

The Pterodactyl Defense: Eastern, Benoni Pteranodon is statistically favors white with a 55.8% (90% CI: 53.9%-57.7%) 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.