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Analyzer

Ruy Lopez: Cozio Defense

2.0M games from Lichess · Updated January 2026

Playable
White Expected Score52.0%Range (90% confident): 51.9% – 52.0%Based on 2.0M games
0%52.0%100%
Range (90% confident): 51.9% – 52.0%
Outcome Distribution
49.9%4.2%46.0%
Win
Draw
Loss
3...Nge7
Ruy Lopez: Cozio Defense
Analyzen=2.0M
Avg Length34 moves
Sharpness96%
Draw Rate4.2%

What is the Ruy Lopez: Cozio Defense expected score for White?

Snapshot

At all ratings, the Ruy Lopez: Cozio Defense has a 52.0% expected score for White (we're 90% confident it's between 51.9% and 52.0%), based on 2.0M Lichess games.

White Win% by Rating

Stable across ratings (~48%)

0
1000
1200
1400
1600
1800
2000
2200
2500+

  • 0-999: 48.0% win rate (56,809 games)
  • 1000-1199: 50.1% win rate (210,112 games)
  • 1200-1399: 50.4% win rate (411,771 games)
  • 1400-1599: 50.2% win rate (513,166 games)
  • 1600-1799: 50.1% win rate (412,500 games)
  • 1800-1999: 49.6% win rate (241,523 games)
  • 2000-2199: 48.2% win rate (116,766 games)
  • 2200-2499: 47.5% win rate (63,391 games)
  • 2500+: 46.5% win rate (11,485 games)

White Win% by Time Control

Best in UltraBullet (56%), worst in Bullet (49%)

UltraBullet
Bullet
Blitz
Rapid
Classical

  • UltraBullet: 55.8% win rate (46 games)
  • Bullet: 49.0% win rate (321,791 games)
  • Blitz: 49.7% win rate (1,197,441 games)
  • Rapid: 50.7% win rate (499,573 games)
  • Classical: 51.5% win rate (18,672 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: 64.3% expected score (9 games)
  • 0-999 rating, Bullet: 49.1% expected score (18,334 games)
  • 0-999 rating, Blitz: 50.0% expected score (32,132 games)
  • 0-999 rating, Rapid: 49.4% expected score (6,282 games)
  • 0-999 rating, Classical: 43.5% expected score (52 games)
  • 1000-1199 rating, UltraBullet: 67.4% expected score (10 games)
  • 1000-1199 rating, Bullet: 51.2% expected score (44,544 games)
  • 1000-1199 rating, Blitz: 52.2% expected score (132,986 games)
  • 1000-1199 rating, Rapid: 52.1% expected score (32,273 games)
  • 1000-1199 rating, Classical: 45.9% expected score (299 games)
  • 1200-1399 rating, UltraBullet: 31.9% expected score (4 games)
  • 1200-1399 rating, Bullet: 51.3% expected score (58,925 games)
  • 1200-1399 rating, Blitz: 52.4% expected score (256,450 games)
  • 1200-1399 rating, Rapid: 52.7% expected score (94,554 games)
  • 1200-1399 rating, Classical: 53.0% expected score (1,838 games)
  • 1400-1599 rating, UltraBullet: 42.6% expected score (12 games)
  • 1400-1599 rating, Bullet: 50.8% expected score (60,097 games)
  • 1400-1599 rating, Blitz: 52.1% expected score (297,982 games)
  • 1400-1599 rating, Rapid: 53.0% expected score (148,816 games)
  • 1400-1599 rating, Classical: 53.2% expected score (6,259 games)
  • 1600-1799 rating, UltraBullet: 38.9% expected score (3 games)
  • 1600-1799 rating, Bullet: 50.2% expected score (49,027 games)
  • 1600-1799 rating, Blitz: 52.0% expected score (224,865 games)
  • 1600-1799 rating, Rapid: 53.5% expected score (131,447 games)
  • 1600-1799 rating, Classical: 54.0% expected score (7,158 games)
  • 1800-1999 rating, UltraBullet: 57.7% expected score (5 games)
  • 1800-1999 rating, Bullet: 49.8% expected score (36,470 games)
  • 1800-1999 rating, Blitz: 51.4% expected score (138,879 games)
  • 1800-1999 rating, Rapid: 54.0% expected score (63,586 games)
  • 1800-1999 rating, Classical: 58.4% expected score (2,583 games)
  • 2000-2199 rating, UltraBullet: 83.4% expected score (3 games)
  • 2000-2199 rating, Bullet: 48.9% expected score (26,273 games)
  • 2000-2199 rating, Blitz: 50.4% expected score (72,129 games)
  • 2000-2199 rating, Rapid: 54.1% expected score (17,964 games)
  • 2000-2199 rating, Classical: 58.2% expected score (397 games)
  • 2200-2499 rating, Bullet: 49.5% expected score (20,792 games)
  • 2200-2499 rating, Blitz: 50.9% expected score (38,082 games)
  • 2200-2499 rating, Rapid: 53.0% expected score (4,442 games)
  • 2200-2499 rating, Classical: 51.3% expected score (75 games)
  • 2500+ rating, Bullet: 50.2% expected score (7,329 games)
  • 2500+ rating, Blitz: 54.6% expected score (3,936 games)
  • 2500+ rating, Rapid: 62.6% expected score (209 games)
  • 2500+ rating, Classical: 82.0% expected score (11 games)

Related Openings

Parent
Ruy Lopez
51.9%
Variations (5)
Ruy Lopez: Alapin Defense
55.9%
Ruy Lopez: Alapin Defense, Alapin Gambit
53.0%
Ruy Lopez: Berlin Defense
49.9%
Ruy Lopez: Berlin Defense, Anderssen Variation
48.6%
Ruy Lopez: Berlin Defense, Berlin Wall
12.2%
Continuations (2)
Ruy Lopez: Cozio Defense, Paulsen Variation
50.6%
Ruy Lopez: Cozio Defense, Tartakower Gambit
50.2%
Analyze Ruy Lopez: Cozio Defense PositionsGet move-by-move win rates with the TrueElo analyzer

Frequently Asked Questions

What is the Ruy Lopez: Cozio Defense win rate?

The Ruy Lopez: Cozio Defense has a 49.9% (90% CI: 49.8%-49.9%) win rate for white, based on 2.0M rated games from Lichess.

At what rating does the Ruy Lopez: Cozio Defense perform best?

The Ruy Lopez: Cozio Defense performs best at 1200-1399 Elo with a 50.4% win rate for white (412K games). Win rate tends to decline at higher ratings as opponents know the theory better.

Is the Ruy Lopez: Cozio Defense better in blitz or rapid?

Classical (51.5%) outperforms Bullet (49.0%) by 2.5%. Choose your time control wisely.

How sharp is the Ruy Lopez: Cozio Defense?

The Ruy Lopez: Cozio Defense has a sharpness score of 95.8 (very decisive), meaning 95.8% of games end decisively. Average game length is 34 moves.

What is the Ruy Lopez: Cozio Defense win rate at 0-999 Elo?

At 0-999 Elo, the Ruy Lopez: Cozio Defense has a 48.0% (90% CI: 47.7%-48.4%) win rate for white, based on 57K Lichess games. Average game length is 28 moves with a 3.1% draw rate.

What is the Ruy Lopez: Cozio Defense win rate at 1000-1199 Elo?

At 1000-1199 Elo, the Ruy Lopez: Cozio Defense has a 50.1% (90% CI: 50.0%-50.3%) win rate for white, based on 210K Lichess games. Average game length is 31 moves with a 3.6% draw rate.

What is the Ruy Lopez: Cozio Defense win rate at 1200-1399 Elo?

At 1200-1399 Elo, the Ruy Lopez: Cozio Defense has a 50.4% (90% CI: 50.3%-50.6%) win rate for white, based on 412K Lichess games. Average game length is 33 moves with a 3.7% draw rate.

What is the Ruy Lopez: Cozio Defense win rate at 1400-1599 Elo?

At 1400-1599 Elo, the Ruy Lopez: Cozio Defense has a 50.2% (90% CI: 50.1%-50.3%) win rate for white, based on 513K Lichess games. Average game length is 34 moves with a 4.0% draw rate.

What is the Ruy Lopez: Cozio Defense win rate at 1600-1799 Elo?

At 1600-1799 Elo, the Ruy Lopez: Cozio Defense has a 50.1% (90% CI: 50.0%-50.2%) win rate for white, based on 413K Lichess games. Average game length is 36 moves with a 4.3% draw rate.

What is the Ruy Lopez: Cozio Defense win rate at 1800-1999 Elo?

At 1800-1999 Elo, the Ruy Lopez: Cozio Defense has a 49.6% (90% CI: 49.5%-49.8%) win rate for white, based on 242K Lichess games. Average game length is 37 moves with a 4.6% draw rate.

What is the Ruy Lopez: Cozio Defense win rate at 2000-2199 Elo?

At 2000-2199 Elo, the Ruy Lopez: Cozio Defense has a 48.2% (90% CI: 48.0%-48.4%) win rate for white, based on 117K Lichess games. Average game length is 37 moves with a 4.9% draw rate.

What is the Ruy Lopez: Cozio Defense win rate at 2200-2499 Elo?

At 2200-2499 Elo, the Ruy Lopez: Cozio Defense has a 47.5% (90% CI: 47.1%-47.8%) win rate for white, based on 63K Lichess games. Average game length is 39 moves with a 6.2% draw rate.

What is the Ruy Lopez: Cozio Defense win rate at 2500+ Elo?

At 2500+ Elo, the Ruy Lopez: Cozio Defense has a 46.5% (90% CI: 45.7%-47.2%) win rate for white, based on 11K Lichess games. Average game length is 43 moves with a 11.0% draw rate.

What is the Ruy Lopez: Cozio Defense win rate in Bullet?

In Bullet games, the Ruy Lopez: Cozio Defense has a 49.0% (90% CI: 48.8%-49.1%) win rate for white (322K Lichess games). Draw rate is 2.8%.

What is the Ruy Lopez: Cozio Defense win rate in Blitz?

In Blitz games, the Ruy Lopez: Cozio Defense has a 49.7% (90% CI: 49.6%-49.8%) win rate for white (1.2M Lichess games). Draw rate is 4.3%.

What is the Ruy Lopez: Cozio Defense win rate in Rapid?

In Rapid games, the Ruy Lopez: Cozio Defense has a 50.7% (90% CI: 50.6%-50.9%) win rate for white (500K Lichess games). Draw rate is 4.8%.

What is the Ruy Lopez: Cozio Defense win rate in Classical?

In Classical games, the Ruy Lopez: Cozio Defense has a 51.5% (90% CI: 50.9%-52.1%) win rate for white (19K Lichess games). Draw rate is 5.3%.

Is the Ruy Lopez: Cozio Defense a good opening?

The Ruy Lopez: Cozio Defense is statistically balanced with a 49.9% (90% CI: 49.8%-49.9%) 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.