TrueEloPlay what wins.
Analyzer

Pterodactyl Defense: Eastern, Anhanguera

186K games from Lichess · Updated January 2026

Playable
White Expected Score50.0%Range (90% confident): 49.8% – 50.2%Based on 186K games
0%50.0%100%
Range (90% confident): 49.8% – 50.2%
Outcome Distribution
48.1%3.8%48.1%
Win
Draw
Loss
4.Be3
Pterodactyl Defense: Eastern, Anhanguera
Analyzen=186K
Avg Length35 moves
Sharpness96%
Draw Rate3.8%

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

Snapshot

At all ratings, the Pterodactyl Defense: Eastern, Anhanguera has a 50.0% expected score for White (we're 90% confident it's between 49.8% and 50.2%), based on 186K Lichess games.

Extra Analysis

Deep-dive datasets for this opening

Time-Control Swing

Max swing: 11.1% · Classical best · Blitz worst

White Win% by Rating

Improves with rating: 45% → 48%

0
1000
1200
1400
1600
1800
2000
2200
2500+

  • 0-999: 45.3% win rate (110 games)
  • 1000-1199: 51.8% win rate (401 games)
  • 1200-1399: 50.1% win rate (1,317 games)
  • 1400-1599: 48.9% win rate (3,951 games)
  • 1600-1799: 48.2% win rate (11,489 games)
  • 1800-1999: 48.7% win rate (30,787 games)
  • 2000-2199: 47.7% win rate (52,800 games)
  • 2200-2499: 47.9% win rate (65,001 games)
  • 2500+: 48.3% win rate (20,260 games)

White Win% by Time Control

Best in Classical (59%), worst in Blitz (48%)

UltraBullet
Bullet
Blitz
Rapid
Classical

  • UltraBullet: 51.5% win rate (497 games)
  • Bullet: 48.0% win rate (125,722 games)
  • Blitz: 48.0% win rate (54,374 games)
  • Rapid: 49.9% win rate (5,351 games)
  • Classical: 59.1% win rate (172 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: 48.7% expected score (38 games)
  • 0-999 rating, Blitz: 40.1% expected score (59 games)
  • 0-999 rating, Rapid: 67.3% expected score (13 games)
  • 1000-1199 rating, UltraBullet: 30.0% expected score (1 games)
  • 1000-1199 rating, Bullet: 53.4% expected score (195 games)
  • 1000-1199 rating, Blitz: 56.7% expected score (165 games)
  • 1000-1199 rating, Rapid: 35.5% expected score (40 games)
  • 1200-1399 rating, UltraBullet: 29.0% expected score (8 games)
  • 1200-1399 rating, Bullet: 47.7% expected score (607 games)
  • 1200-1399 rating, Blitz: 54.3% expected score (583 games)
  • 1200-1399 rating, Rapid: 50.4% expected score (113 games)
  • 1200-1399 rating, Classical: 76.7% expected score (6 games)
  • 1400-1599 rating, UltraBullet: 49.2% expected score (63 games)
  • 1400-1599 rating, Bullet: 48.6% expected score (1,713 games)
  • 1400-1599 rating, Blitz: 51.1% expected score (1,799 games)
  • 1400-1599 rating, Rapid: 52.5% expected score (362 games)
  • 1400-1599 rating, Classical: 43.6% expected score (14 games)
  • 1600-1799 rating, UltraBullet: 55.9% expected score (212 games)
  • 1600-1799 rating, Bullet: 48.7% expected score (4,881 games)
  • 1600-1799 rating, Blitz: 49.7% expected score (5,434 games)
  • 1600-1799 rating, Rapid: 52.0% expected score (926 games)
  • 1600-1799 rating, Classical: 66.0% expected score (36 games)
  • 1800-1999 rating, UltraBullet: 48.3% expected score (87 games)
  • 1800-1999 rating, Bullet: 49.3% expected score (15,027 games)
  • 1800-1999 rating, Blitz: 51.0% expected score (14,035 games)
  • 1800-1999 rating, Rapid: 51.1% expected score (1,580 games)
  • 1800-1999 rating, Classical: 59.3% expected score (58 games)
  • 2000-2199 rating, UltraBullet: 62.6% expected score (70 games)
  • 2000-2199 rating, Bullet: 49.3% expected score (31,100 games)
  • 2000-2199 rating, Blitz: 49.4% expected score (19,941 games)
  • 2000-2199 rating, Rapid: 53.5% expected score (1,646 games)
  • 2000-2199 rating, Classical: 60.2% expected score (43 games)
  • 2200-2499 rating, UltraBullet: 45.6% expected score (44 games)
  • 2200-2499 rating, Bullet: 49.8% expected score (52,575 games)
  • 2200-2499 rating, Blitz: 50.6% expected score (11,710 games)
  • 2200-2499 rating, Rapid: 54.2% expected score (657 games)
  • 2200-2499 rating, Classical: 77.3% expected score (15 games)
  • 2500+ rating, UltraBullet: 46.3% expected score (12 games)
  • 2500+ rating, Bullet: 51.2% expected score (19,586 games)
  • 2500+ rating, Blitz: 52.9% expected score (648 games)
  • 2500+ rating, Rapid: 59.7% expected score (14 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, Anhanguera PositionsGet move-by-move win rates with the TrueElo analyzer

Frequently Asked Questions

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

The Pterodactyl Defense: Eastern, Anhanguera has a 48.1% (90% CI: 47.9%-48.3%) win rate for white, based on 186K rated games from Lichess.

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

The Pterodactyl Defense: Eastern, Anhanguera performs best at 1800-1999 Elo with a 48.7% win rate for white (31K games). Win rate tends to decline at higher ratings as opponents know the theory better.

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

Classical (59.1%) outperforms Blitz (48.0%) by 11.1%. Choose your time control wisely.

How sharp is the Pterodactyl Defense: Eastern, Anhanguera?

The Pterodactyl Defense: Eastern, Anhanguera has a sharpness score of 96.2 (very decisive), meaning 96.2% of games end decisively. Average game length is 35 moves.

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

At 0-999 Elo, the Pterodactyl Defense: Eastern, Anhanguera has a 45.3% (90% CI: 37.6%-53.1%) win rate for white, based on 110 Lichess games. Average game length is 23 moves with a 2.2% draw rate.

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

At 1000-1199 Elo, the Pterodactyl Defense: Eastern, Anhanguera has a 51.8% (90% CI: 47.7%-55.9%) win rate for white, based on 401 Lichess games. Average game length is 25 moves with a 1.9% draw rate.

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

At 1200-1399 Elo, the Pterodactyl Defense: Eastern, Anhanguera has a 50.1% (90% CI: 47.8%-52.4%) win rate for white, based on 1.3K Lichess games. Average game length is 27 moves with a 1.6% draw rate.

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

At 1400-1599 Elo, the Pterodactyl Defense: Eastern, Anhanguera has a 48.9% (90% CI: 47.6%-50.2%) win rate for white, based on 4.0K Lichess games. Average game length is 28 moves with a 2.4% draw rate.

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

At 1600-1799 Elo, the Pterodactyl Defense: Eastern, Anhanguera has a 48.2% (90% CI: 47.5%-49.0%) win rate for white, based on 11K Lichess games. Average game length is 31 moves with a 2.7% draw rate.

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

At 1800-1999 Elo, the Pterodactyl Defense: Eastern, Anhanguera has a 48.7% (90% CI: 48.2%-49.1%) win rate for white, based on 31K Lichess games. Average game length is 32 moves with a 3.0% draw rate.

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

At 2000-2199 Elo, the Pterodactyl Defense: Eastern, Anhanguera has a 47.7% (90% CI: 47.3%-48.1%) win rate for white, based on 53K Lichess games. Average game length is 34 moves with a 3.6% draw rate.

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

At 2200-2499 Elo, the Pterodactyl Defense: Eastern, Anhanguera has a 47.9% (90% CI: 47.6%-48.2%) win rate for white, based on 65K Lichess games. Average game length is 36 moves with a 4.2% draw rate.

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

At 2500+ Elo, the Pterodactyl Defense: Eastern, Anhanguera has a 48.3% (90% CI: 47.7%-48.8%) win rate for white, based on 20K Lichess games. Average game length is 40 moves with a 5.9% draw rate.

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

In UltraBullet games, the Pterodactyl Defense: Eastern, Anhanguera has a 51.5% (90% CI: 47.8%-55.1%) win rate for white (497 Lichess games). Draw rate is 2.9%.

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

In Bullet games, the Pterodactyl Defense: Eastern, Anhanguera has a 48.0% (90% CI: 47.8%-48.2%) win rate for white (126K Lichess games). Draw rate is 3.5%.

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

In Blitz games, the Pterodactyl Defense: Eastern, Anhanguera has a 48.0% (90% CI: 47.6%-48.4%) win rate for white (54K Lichess games). Draw rate is 4.4%.

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

In Rapid games, the Pterodactyl Defense: Eastern, Anhanguera has a 49.9% (90% CI: 48.8%-51.1%) win rate for white (5.4K Lichess games). Draw rate is 4.9%.

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

In Classical games, the Pterodactyl Defense: Eastern, Anhanguera has a 59.1% (90% CI: 52.9%-65.1%) win rate for white (172 Lichess games). Draw rate is 6.6%.

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

The Pterodactyl Defense: Eastern, Anhanguera is statistically balanced with a 48.1% (90% CI: 47.9%-48.3%) 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.