TrueEloPlay what wins.
Analyzer

Queen's Gambit Declined: Been-Koomen Variation

81K games from Lichess · Updated January 2026

Playable
White Expected Score49.3%Range (90% confident): 49.0% – 49.6%Based on 81K games
0%49.3%100%
Range (90% confident): 49.0% – 49.6%
Outcome Distribution
47.2%4.2%48.6%
Win
Draw
Loss
4...c5
Queen's Gambit Declined: Been-Koomen Variation
Analyzen=81K
Avg Length33 moves
Sharpness96%
Draw Rate4.2%

What is the Queen's Gambit Declined: Been-Koomen Variation expected score for White?

Snapshot

At all ratings, the Queen's Gambit Declined: Been-Koomen Variation has a 49.3% expected score for White (we're 90% confident it's between 49.0% and 49.6%), based on 81K Lichess games.

Extra Analysis

Deep-dive datasets for this opening

Gambit BreakpointWhite

Peak: -0.3% · Breakpoint: 0-999

White Win% by Rating

Stable across ratings (~45%)

0
1000
1200
1400
1600
1800
2000
2200
2500+

  • 0-999: 45.2% win rate (506 games)
  • 1000-1199: 47.6% win rate (2,616 games)
  • 1200-1399: 48.1% win rate (7,801 games)
  • 1400-1599: 47.6% win rate (15,776 games)
  • 1600-1799: 46.6% win rate (22,875 games)
  • 1800-1999: 47.2% win rate (20,235 games)
  • 2000-2199: 47.9% win rate (8,592 games)
  • 2200-2499: 45.5% win rate (2,733 games)
  • 2500+: 44.7% win rate (212 games)

White Win% by Time Control

Similar across time controls (~48%)

UltraBullet
Bullet
Blitz
Rapid
Classical

  • UltraBullet: 47.7% win rate (119 games)
  • Bullet: 47.5% win rate (29,683 games)
  • Blitz: 47.1% win rate (41,180 games)
  • Rapid: 46.7% win rate (9,992 games)
  • Classical: 47.3% win rate (372 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: 30.0% expected score (1 games)
  • 0-999 rating, Bullet: 48.0% expected score (247 games)
  • 0-999 rating, Blitz: 43.8% expected score (231 games)
  • 0-999 rating, Rapid: 51.8% expected score (27 games)
  • 1000-1199 rating, UltraBullet: 61.2% expected score (3 games)
  • 1000-1199 rating, Bullet: 47.7% expected score (1,146 games)
  • 1000-1199 rating, Blitz: 50.2% expected score (1,244 games)
  • 1000-1199 rating, Rapid: 46.1% expected score (218 games)
  • 1000-1199 rating, Classical: 42.4% expected score (5 games)
  • 1200-1399 rating, UltraBullet: 23.4% expected score (6 games)
  • 1200-1399 rating, Bullet: 49.7% expected score (3,132 games)
  • 1200-1399 rating, Blitz: 49.0% expected score (3,938 games)
  • 1200-1399 rating, Rapid: 51.8% expected score (715 games)
  • 1200-1399 rating, Classical: 54.4% expected score (10 games)
  • 1400-1599 rating, UltraBullet: 45.2% expected score (40 games)
  • 1400-1599 rating, Bullet: 50.1% expected score (5,415 games)
  • 1400-1599 rating, Blitz: 48.9% expected score (8,388 games)
  • 1400-1599 rating, Rapid: 49.6% expected score (1,859 games)
  • 1400-1599 rating, Classical: 46.7% expected score (74 games)
  • 1600-1799 rating, UltraBullet: 56.1% expected score (48 games)
  • 1600-1799 rating, Bullet: 49.4% expected score (7,213 games)
  • 1600-1799 rating, Blitz: 48.8% expected score (12,385 games)
  • 1600-1799 rating, Rapid: 47.2% expected score (3,074 games)
  • 1600-1799 rating, Classical: 48.8% expected score (155 games)
  • 1800-1999 rating, UltraBullet: 50.0% expected score (16 games)
  • 1800-1999 rating, Bullet: 48.6% expected score (6,778 games)
  • 1800-1999 rating, Blitz: 49.8% expected score (10,427 games)
  • 1800-1999 rating, Rapid: 50.5% expected score (2,903 games)
  • 1800-1999 rating, Classical: 58.0% expected score (111 games)
  • 2000-2199 rating, UltraBullet: 50.0% expected score (4 games)
  • 2000-2199 rating, Bullet: 49.3% expected score (3,764 games)
  • 2000-2199 rating, Blitz: 51.5% expected score (3,703 games)
  • 2000-2199 rating, Rapid: 52.9% expected score (1,105 games)
  • 2000-2199 rating, Classical: 64.3% expected score (16 games)
  • 2200-2499 rating, UltraBullet: 30.0% expected score (1 games)
  • 2200-2499 rating, Bullet: 47.4% expected score (1,824 games)
  • 2200-2499 rating, Blitz: 51.3% expected score (819 games)
  • 2200-2499 rating, Rapid: 47.2% expected score (88 games)
  • 2200-2499 rating, Classical: 30.0% expected score (1 games)
  • 2500+ rating, Bullet: 47.6% expected score (164 games)
  • 2500+ rating, Blitz: 51.1% expected score (45 games)
  • 2500+ rating, Rapid: 38.9% expected score (3 games)

Related Openings

Parent
Queen's Gambit Declined
50.9%
Variations (5)
Queen's Gambit Declined: Alapin Variation
52.1%
Queen's Gambit Declined: Albin Countergambit
49.8%
Queen's Gambit Declined: Albin Countergambit, Balogh Variation
46.6%
Queen's Gambit Declined: Albin Countergambit, Fianchetto Variation
52.9%
Queen's Gambit Declined: Albin Countergambit, Fianchetto Variation, Be6 Line
48.5%
Analyze Queen's Gambit Declined: Been-Koomen Variation PositionsGet move-by-move win rates with the TrueElo analyzer

Frequently Asked Questions

What is the Queen's Gambit Declined: Been-Koomen Variation win rate?

The Queen's Gambit Declined: Been-Koomen Variation has a 47.2% (90% CI: 46.9%-47.5%) win rate for white, based on 81K rated games from Lichess.

At what rating does the Queen's Gambit Declined: Been-Koomen Variation perform best?

The Queen's Gambit Declined: Been-Koomen Variation performs best at 1200-1399 Elo with a 48.1% win rate for white (7.8K games). Win rate tends to decline at higher ratings as opponents know the theory better.

Is the Queen's Gambit Declined: Been-Koomen Variation better in blitz or rapid?

Bullet (47.5%) outperforms UltraBullet (47.7%) by -0.2%. Choose your time control wisely.

How sharp is the Queen's Gambit Declined: Been-Koomen Variation?

The Queen's Gambit Declined: Been-Koomen Variation has a sharpness score of 95.8 (very decisive), meaning 95.8% of games end decisively. Average game length is 33 moves.

What is the Queen's Gambit Declined: Been-Koomen Variation win rate at 0-999 Elo?

At 0-999 Elo, the Queen's Gambit Declined: Been-Koomen Variation has a 45.2% (90% CI: 41.6%-48.9%) win rate for white, based on 506 Lichess games. Average game length is 25 moves with a 1.9% draw rate.

What is the Queen's Gambit Declined: Been-Koomen Variation win rate at 1000-1199 Elo?

At 1000-1199 Elo, the Queen's Gambit Declined: Been-Koomen Variation has a 47.6% (90% CI: 46.0%-49.2%) win rate for white, based on 2.6K Lichess games. Average game length is 28 moves with a 2.3% draw rate.

What is the Queen's Gambit Declined: Been-Koomen Variation win rate at 1200-1399 Elo?

At 1200-1399 Elo, the Queen's Gambit Declined: Been-Koomen Variation has a 48.1% (90% CI: 47.1%-49.0%) win rate for white, based on 7.8K Lichess games. Average game length is 29 moves with a 2.9% draw rate.

What is the Queen's Gambit Declined: Been-Koomen Variation win rate at 1400-1599 Elo?

At 1400-1599 Elo, the Queen's Gambit Declined: Been-Koomen Variation has a 47.6% (90% CI: 46.9%-48.2%) win rate for white, based on 16K Lichess games. Average game length is 31 moves with a 3.5% draw rate.

What is the Queen's Gambit Declined: Been-Koomen Variation win rate at 1600-1799 Elo?

At 1600-1799 Elo, the Queen's Gambit Declined: Been-Koomen Variation has a 46.6% (90% CI: 46.1%-47.2%) win rate for white, based on 23K Lichess games. Average game length is 33 moves with a 4.3% draw rate.

What is the Queen's Gambit Declined: Been-Koomen Variation win rate at 1800-1999 Elo?

At 1800-1999 Elo, the Queen's Gambit Declined: Been-Koomen Variation has a 47.2% (90% CI: 46.6%-47.7%) win rate for white, based on 20K Lichess games. Average game length is 35 moves with a 4.7% draw rate.

What is the Queen's Gambit Declined: Been-Koomen Variation win rate at 2000-2199 Elo?

At 2000-2199 Elo, the Queen's Gambit Declined: Been-Koomen Variation has a 47.9% (90% CI: 47.0%-48.8%) win rate for white, based on 8.6K Lichess games. Average game length is 36 moves with a 5.6% draw rate.

What is the Queen's Gambit Declined: Been-Koomen Variation win rate at 2200-2499 Elo?

At 2200-2499 Elo, the Queen's Gambit Declined: Been-Koomen Variation has a 45.5% (90% CI: 44.0%-47.1%) win rate for white, based on 2.7K Lichess games. Average game length is 37 moves with a 5.9% draw rate.

What is the Queen's Gambit Declined: Been-Koomen Variation win rate at 2500+ Elo?

At 2500+ Elo, the Queen's Gambit Declined: Been-Koomen Variation has a 44.7% (90% CI: 39.2%-50.3%) win rate for white, based on 212 Lichess games. Average game length is 39 moves with a 6.8% draw rate.

What is the Queen's Gambit Declined: Been-Koomen Variation win rate in UltraBullet?

In UltraBullet games, the Queen's Gambit Declined: Been-Koomen Variation has a 47.7% (90% CI: 40.3%-55.2%) win rate for white (119 Lichess games). Draw rate is 2.1%.

What is the Queen's Gambit Declined: Been-Koomen Variation win rate in Bullet?

In Bullet games, the Queen's Gambit Declined: Been-Koomen Variation has a 47.5% (90% CI: 47.0%-48.0%) win rate for white (30K Lichess games). Draw rate is 3.2%.

What is the Queen's Gambit Declined: Been-Koomen Variation win rate in Blitz?

In Blitz games, the Queen's Gambit Declined: Been-Koomen Variation has a 47.1% (90% CI: 46.7%-47.5%) win rate for white (41K Lichess games). Draw rate is 4.6%.

What is the Queen's Gambit Declined: Been-Koomen Variation win rate in Rapid?

In Rapid games, the Queen's Gambit Declined: Been-Koomen Variation has a 46.7% (90% CI: 45.9%-47.5%) win rate for white (10.0K Lichess games). Draw rate is 5.7%.

What is the Queen's Gambit Declined: Been-Koomen Variation win rate in Classical?

In Classical games, the Queen's Gambit Declined: Been-Koomen Variation has a 47.3% (90% CI: 43.0%-51.5%) win rate for white (372 Lichess games). Draw rate is 9.0%.

Is the Queen's Gambit Declined: Been-Koomen Variation a good opening?

The Queen's Gambit Declined: Been-Koomen Variation is statistically balanced with a 47.2% (90% CI: 46.9%-47.5%) win rate across all ratings. It performs best at 1200-1399 Elo. Your results depend on your rating, time control, and how well you know the typical plans.