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Pterodactyl Defense: Eastern, Benoni

134K games from Lichess · Updated January 2026

Playable
White Expected Score51.3%Range (90% confident): 51.1% – 51.5%Based on 134K games
0%51.3%100%
Range (90% confident): 51.1% – 51.5%
Outcome Distribution
49.3%3.9%46.8%
Win
Draw
Loss
4.d5
Pterodactyl Defense: Eastern, Benoni
Analyzen=134K
Avg Length35 moves
Sharpness96%
Draw Rate3.9%

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

Snapshot

At all ratings, the Pterodactyl Defense: Eastern, Benoni has a 51.3% expected score for White (we're 90% confident it's between 51.1% and 51.5%), based on 134K Lichess games.

White Win% by Rating

Improves with rating: 44% → 52%

0
1000
1200
1400
1600
1800
2000
2200
2500+

  • 0-999: 44.1% win rate (301 games)
  • 1000-1199: 48.8% win rate (1,244 games)
  • 1200-1399: 49.0% win rate (3,317 games)
  • 1400-1599: 48.5% win rate (7,485 games)
  • 1600-1799: 47.1% win rate (13,812 games)
  • 1800-1999: 48.1% win rate (22,395 games)
  • 2000-2199: 49.2% win rate (31,836 games)
  • 2200-2499: 50.2% win rate (38,272 games)
  • 2500+: 51.8% win rate (15,257 games)

White Win% by Time Control

Similar across time controls (~49%)

UltraBullet
Bullet
Blitz
Rapid
Classical

  • UltraBullet: 48.5% win rate (218 games)
  • Bullet: 49.3% win rate (70,583 games)
  • Blitz: 49.3% win rate (56,836 games)
  • Rapid: 49.3% win rate (6,115 games)
  • Classical: 46.6% win rate (167 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: 40.0% expected score (138 games)
  • 0-999 rating, Blitz: 47.4% expected score (130 games)
  • 0-999 rating, Rapid: 54.4% expected score (33 games)
  • 1000-1199 rating, UltraBullet: 30.0% expected score (1 games)
  • 1000-1199 rating, Bullet: 50.3% expected score (602 games)
  • 1000-1199 rating, Blitz: 49.5% expected score (514 games)
  • 1000-1199 rating, Rapid: 48.0% expected score (124 games)
  • 1000-1199 rating, Classical: 61.2% expected score (3 games)
  • 1200-1399 rating, UltraBullet: 54.8% expected score (9 games)
  • 1200-1399 rating, Bullet: 49.1% expected score (1,408 games)
  • 1200-1399 rating, Blitz: 51.5% expected score (1,568 games)
  • 1200-1399 rating, Rapid: 47.6% expected score (327 games)
  • 1200-1399 rating, Classical: 27.0% expected score (5 games)
  • 1400-1599 rating, UltraBullet: 50.0% expected score (47 games)
  • 1400-1599 rating, Bullet: 48.6% expected score (2,896 games)
  • 1400-1599 rating, Blitz: 50.3% expected score (3,750 games)
  • 1400-1599 rating, Rapid: 50.9% expected score (780 games)
  • 1400-1599 rating, Classical: 46.3% expected score (12 games)
  • 1600-1799 rating, UltraBullet: 46.2% expected score (76 games)
  • 1600-1799 rating, Bullet: 48.3% expected score (5,340 games)
  • 1600-1799 rating, Blitz: 48.8% expected score (7,094 games)
  • 1600-1799 rating, Rapid: 48.8% expected score (1,263 games)
  • 1600-1799 rating, Classical: 50.0% expected score (39 games)
  • 1800-1999 rating, UltraBullet: 55.4% expected score (45 games)
  • 1800-1999 rating, Bullet: 49.5% expected score (9,214 games)
  • 1800-1999 rating, Blitz: 49.6% expected score (11,468 games)
  • 1800-1999 rating, Rapid: 52.1% expected score (1,605 games)
  • 1800-1999 rating, Classical: 47.7% expected score (63 games)
  • 2000-2199 rating, UltraBullet: 39.8% expected score (18 games)
  • 2000-2199 rating, Bullet: 49.9% expected score (15,151 games)
  • 2000-2199 rating, Blitz: 52.0% expected score (15,397 games)
  • 2000-2199 rating, Rapid: 52.0% expected score (1,237 games)
  • 2000-2199 rating, Classical: 57.3% expected score (33 games)
  • 2200-2499 rating, UltraBullet: 34.9% expected score (15 games)
  • 2200-2499 rating, Bullet: 51.2% expected score (22,865 games)
  • 2200-2499 rating, Blitz: 54.1% expected score (14,660 games)
  • 2200-2499 rating, Rapid: 57.0% expected score (720 games)
  • 2200-2499 rating, Classical: 61.1% expected score (12 games)
  • 2500+ rating, UltraBullet: 79.5% expected score (7 games)
  • 2500+ rating, Bullet: 54.5% expected score (12,969 games)
  • 2500+ rating, Blitz: 57.8% expected score (2,255 games)
  • 2500+ rating, Rapid: 62.8% expected score (26 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 PositionsGet move-by-move win rates with the TrueElo analyzer

Frequently Asked Questions

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

The Pterodactyl Defense: Eastern, Benoni has a 49.3% (90% CI: 49.1%-49.5%) win rate for white, based on 134K rated games from Lichess.

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

The Pterodactyl Defense: Eastern, Benoni performs best at 2500+ Elo with a 51.8% win rate for white (15K games). Win rate tends to decline at higher ratings as opponents know the theory better.

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

Bullet (49.3%) outperforms Classical (46.6%) by 2.7%. Choose your time control wisely.

How sharp is the Pterodactyl Defense: Eastern, Benoni?

The Pterodactyl Defense: Eastern, Benoni has a sharpness score of 96.1 (very decisive), meaning 96.1% of games end decisively. Average game length is 35 moves.

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

At 0-999 Elo, the Pterodactyl Defense: Eastern, Benoni has a 44.1% (90% CI: 39.5%-48.8%) win rate for white, based on 301 Lichess games. Average game length is 25 moves with a 1.2% draw rate.

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

At 1000-1199 Elo, the Pterodactyl Defense: Eastern, Benoni has a 48.8% (90% CI: 46.4%-51.1%) win rate for white, based on 1.2K Lichess games. Average game length is 27 moves with a 1.9% draw rate.

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

At 1200-1399 Elo, the Pterodactyl Defense: Eastern, Benoni has a 49.0% (90% CI: 47.5%-50.4%) win rate for white, based on 3.3K Lichess games. Average game length is 29 moves with a 2.2% draw rate.

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

At 1400-1599 Elo, the Pterodactyl Defense: Eastern, Benoni has a 48.5% (90% CI: 47.5%-49.4%) win rate for white, based on 7.5K Lichess games. Average game length is 31 moves with a 2.4% draw rate.

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

At 1600-1799 Elo, the Pterodactyl Defense: Eastern, Benoni has a 47.1% (90% CI: 46.4%-47.8%) win rate for white, based on 14K Lichess games. Average game length is 32 moves with a 2.9% draw rate.

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

At 1800-1999 Elo, the Pterodactyl Defense: Eastern, Benoni has a 48.1% (90% CI: 47.5%-48.6%) win rate for white, based on 22K Lichess games. Average game length is 34 moves with a 3.2% draw rate.

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

At 2000-2199 Elo, the Pterodactyl Defense: Eastern, Benoni has a 49.2% (90% CI: 48.7%-49.6%) win rate for white, based on 32K Lichess games. Average game length is 35 moves with a 3.6% draw rate.

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

At 2200-2499 Elo, the Pterodactyl Defense: Eastern, Benoni has a 50.2% (90% CI: 49.8%-50.6%) win rate for white, based on 38K Lichess games. Average game length is 37 moves with a 4.4% draw rate.

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

At 2500+ Elo, the Pterodactyl Defense: Eastern, Benoni has a 51.8% (90% CI: 51.2%-52.5%) win rate for white, based on 15K Lichess games. Average game length is 40 moves with a 6.4% draw rate.

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

In UltraBullet games, the Pterodactyl Defense: Eastern, Benoni has a 48.5% (90% CI: 43.0%-54.1%) win rate for white (218 Lichess games). Draw rate is 0.7%.

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

In Bullet games, the Pterodactyl Defense: Eastern, Benoni has a 49.3% (90% CI: 49.0%-49.6%) win rate for white (71K Lichess games). Draw rate is 3.1%.

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

In Blitz games, the Pterodactyl Defense: Eastern, Benoni has a 49.3% (90% CI: 49.0%-49.7%) win rate for white (57K Lichess games). Draw rate is 4.7%.

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

In Rapid games, the Pterodactyl Defense: Eastern, Benoni has a 49.3% (90% CI: 48.3%-50.4%) win rate for white (6.1K Lichess games). Draw rate is 4.4%.

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

In Classical games, the Pterodactyl Defense: Eastern, Benoni has a 46.6% (90% CI: 40.3%-52.9%) win rate for white (167 Lichess games). Draw rate is 8.0%.

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

The Pterodactyl Defense: Eastern, Benoni is statistically balanced with a 49.3% (90% CI: 49.1%-49.5%) 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.