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Bird Opening: Williams-Zilbermints Gambit

37K games from Lichess · Updated January 2026

Playable
White Expected Score50.2%Range (90% confident): 49.8% – 50.7%Based on 37K games
0%50.2%100%
Range (90% confident): 49.8% – 50.7%
Outcome Distribution
48.8%2.8%48.4%
Win
Draw
Loss
4.Nge2
Bird Opening: Williams-Zilbermints Gambit
Analyzen=37K
Avg Length32 moves
Sharpness97%
Draw Rate2.8%

What is the Bird Opening: Williams-Zilbermints Gambit expected score for White?

Snapshot

At all ratings, the Bird Opening: Williams-Zilbermints Gambit has a 50.2% expected score for White (we're 90% confident it's between 49.8% and 50.7%), based on 37K Lichess games.

Extra Analysis

Deep-dive datasets for this opening

Gambit BreakpointWhite

Peak: +0.8% · Breakpoint: 0-999

Time-Control Swing

Max swing: 8.4% · Bullet best · Rapid worst

White Win% by Rating

Improves with rating: 45% → 48%

0
1000
1200
1400
1600
1800
2000
2200
2500+

  • 0-999: 44.7% win rate (219 games)
  • 1000-1199: 49.5% win rate (1,050 games)
  • 1200-1399: 47.5% win rate (1,839 games)
  • 1400-1599: 48.5% win rate (4,502 games)
  • 1600-1799: 48.8% win rate (8,466 games)
  • 1800-1999: 49.6% win rate (13,173 games)
  • 2000-2199: 48.1% win rate (5,841 games)
  • 2200-2499: 48.0% win rate (1,414 games)
  • 2500+: 47.6% win rate (111 games)

White Win% by Time Control

Best in Bullet (50%), worst in Classical (26%)

UltraBullet
Bullet
Blitz
Rapid
Classical

  • UltraBullet: 37.9% win rate (71 games)
  • Bullet: 49.5% win rate (29,398 games)
  • Blitz: 46.7% win rate (6,715 games)
  • Rapid: 41.1% win rate (423 games)
  • Classical: 26.3% win rate (8 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, UltraBullet: 16.7% expected score (3 games)
  • 0-999 rating, Bullet: 47.7% expected score (107 games)
  • 0-999 rating, Blitz: 47.1% expected score (84 games)
  • 0-999 rating, Rapid: 42.5% expected score (25 games)
  • 1000-1199 rating, UltraBullet: 50.0% expected score (2 games)
  • 1000-1199 rating, Bullet: 50.6% expected score (835 games)
  • 1000-1199 rating, Blitz: 51.2% expected score (165 games)
  • 1000-1199 rating, Rapid: 40.9% expected score (48 games)
  • 1200-1399 rating, UltraBullet: 42.0% expected score (11 games)
  • 1200-1399 rating, Bullet: 48.6% expected score (1,442 games)
  • 1200-1399 rating, Blitz: 47.6% expected score (348 games)
  • 1200-1399 rating, Rapid: 47.5% expected score (38 games)
  • 1400-1599 rating, UltraBullet: 79.5% expected score (7 games)
  • 1400-1599 rating, Bullet: 50.0% expected score (3,345 games)
  • 1400-1599 rating, Blitz: 48.2% expected score (1,069 games)
  • 1400-1599 rating, Rapid: 37.1% expected score (76 games)
  • 1400-1599 rating, Classical: 19.3% expected score (5 games)
  • 1600-1799 rating, UltraBullet: 38.3% expected score (24 games)
  • 1600-1799 rating, Bullet: 50.9% expected score (6,043 games)
  • 1600-1799 rating, Blitz: 48.5% expected score (2,313 games)
  • 1600-1799 rating, Rapid: 38.8% expected score (83 games)
  • 1600-1799 rating, Classical: 61.2% expected score (3 games)
  • 1800-1999 rating, UltraBullet: 26.8% expected score (20 games)
  • 1800-1999 rating, Bullet: 51.3% expected score (10,893 games)
  • 1800-1999 rating, Blitz: 50.5% expected score (2,122 games)
  • 1800-1999 rating, Rapid: 53.6% expected score (138 games)
  • 2000-2199 rating, UltraBullet: 50.0% expected score (4 games)
  • 2000-2199 rating, Bullet: 50.4% expected score (5,261 games)
  • 2000-2199 rating, Blitz: 45.5% expected score (561 games)
  • 2000-2199 rating, Rapid: 47.0% expected score (15 games)
  • 2200-2499 rating, Bullet: 50.0% expected score (1,361 games)
  • 2200-2499 rating, Blitz: 52.8% expected score (53 games)
  • 2500+ rating, Bullet: 52.7% expected score (111 games)

Related Openings

Parent
Bird Opening
50.1%
Variations (5)
Bird Opening: Batavo-Polish Attack
43.3%
Bird Opening: Double Duck Formation
50.1%
Bird Opening: Dutch Variation
50.5%
Bird Opening: Dutch Variation, Batavo Gambit
45.3%
Bird Opening: Dutch Variation, Dudweiler Gambit
27.2%
Analyze Bird Opening: Williams-Zilbermints Gambit PositionsGet move-by-move win rates with the TrueElo analyzer

Frequently Asked Questions

What is the Bird Opening: Williams-Zilbermints Gambit win rate?

The Bird Opening: Williams-Zilbermints Gambit has a 48.8% (90% CI: 48.4%-49.3%) win rate for white, based on 37K rated games from Lichess.

At what rating does the Bird Opening: Williams-Zilbermints Gambit perform best?

The Bird Opening: Williams-Zilbermints Gambit performs best at 1800-1999 Elo with a 49.6% win rate for white (13K games). Win rate tends to decline at higher ratings as opponents know the theory better.

Is the Bird Opening: Williams-Zilbermints Gambit better in blitz or rapid?

Bullet (49.5%) outperforms UltraBullet (37.9%) by 11.6%. Choose your time control wisely.

How sharp is the Bird Opening: Williams-Zilbermints Gambit?

The Bird Opening: Williams-Zilbermints Gambit has a sharpness score of 97.2 (very decisive), meaning 97.2% of games end decisively. Average game length is 32 moves.

What is the Bird Opening: Williams-Zilbermints Gambit win rate at 0-999 Elo?

At 0-999 Elo, the Bird Opening: Williams-Zilbermints Gambit has a 44.7% (90% CI: 39.2%-50.2%) win rate for white, based on 219 Lichess games. Average game length is 24 moves with a 2.9% draw rate.

What is the Bird Opening: Williams-Zilbermints Gambit win rate at 1000-1199 Elo?

At 1000-1199 Elo, the Bird Opening: Williams-Zilbermints Gambit has a 49.5% (90% CI: 47.0%-52.0%) win rate for white, based on 1.1K Lichess games. Average game length is 24 moves with a 1.5% draw rate.

What is the Bird Opening: Williams-Zilbermints Gambit win rate at 1200-1399 Elo?

At 1200-1399 Elo, the Bird Opening: Williams-Zilbermints Gambit has a 47.5% (90% CI: 45.6%-49.4%) win rate for white, based on 1.8K Lichess games. Average game length is 27 moves with a 1.5% draw rate.

What is the Bird Opening: Williams-Zilbermints Gambit win rate at 1400-1599 Elo?

At 1400-1599 Elo, the Bird Opening: Williams-Zilbermints Gambit has a 48.5% (90% CI: 47.2%-49.7%) win rate for white, based on 4.5K Lichess games. Average game length is 28 moves with a 1.7% draw rate.

What is the Bird Opening: Williams-Zilbermints Gambit win rate at 1600-1799 Elo?

At 1600-1799 Elo, the Bird Opening: Williams-Zilbermints Gambit has a 48.8% (90% CI: 47.9%-49.7%) win rate for white, based on 8.5K Lichess games. Average game length is 31 moves with a 2.6% draw rate.

What is the Bird Opening: Williams-Zilbermints Gambit win rate at 1800-1999 Elo?

At 1800-1999 Elo, the Bird Opening: Williams-Zilbermints Gambit has a 49.6% (90% CI: 48.9%-50.3%) win rate for white, based on 13K Lichess games. Average game length is 33 moves with a 3.0% draw rate.

What is the Bird Opening: Williams-Zilbermints Gambit win rate at 2000-2199 Elo?

At 2000-2199 Elo, the Bird Opening: Williams-Zilbermints Gambit has a 48.1% (90% CI: 47.0%-49.1%) win rate for white, based on 5.8K Lichess games. Average game length is 34 moves with a 3.6% draw rate.

What is the Bird Opening: Williams-Zilbermints Gambit win rate at 2200-2499 Elo?

At 2200-2499 Elo, the Bird Opening: Williams-Zilbermints Gambit has a 48.0% (90% CI: 45.8%-50.2%) win rate for white, based on 1.4K Lichess games. Average game length is 34 moves with a 4.1% draw rate.

What is the Bird Opening: Williams-Zilbermints Gambit win rate at 2500+ Elo?

At 2500+ Elo, the Bird Opening: Williams-Zilbermints Gambit has a 47.6% (90% CI: 39.9%-55.3%) win rate for white, based on 111 Lichess games. Average game length is 39 moves with a 10.2% draw rate.

What is the Bird Opening: Williams-Zilbermints Gambit win rate in Bullet?

In Bullet games, the Bird Opening: Williams-Zilbermints Gambit has a 49.5% (90% CI: 49.0%-50.0%) win rate for white (29K Lichess games). Draw rate is 2.4%.

What is the Bird Opening: Williams-Zilbermints Gambit win rate in Blitz?

In Blitz games, the Bird Opening: Williams-Zilbermints Gambit has a 46.7% (90% CI: 45.7%-47.7%) win rate for white (6.7K Lichess games). Draw rate is 4.4%.

What is the Bird Opening: Williams-Zilbermints Gambit win rate in Rapid?

In Rapid games, the Bird Opening: Williams-Zilbermints Gambit has a 41.1% (90% CI: 37.2%-45.1%) win rate for white (423 Lichess games). Draw rate is 7.2%.

Is the Bird Opening: Williams-Zilbermints Gambit a good opening?

The Bird Opening: Williams-Zilbermints Gambit is statistically balanced with a 48.8% (90% CI: 48.4%-49.3%) 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.