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Mieses Opening: Reversed Rat

2.5M games from Lichess · Updated January 2026

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Analyze this line move by move

Black expected score · All ratings · All speeds

50.2%

45%55%
Floor50.2%

the worst score you would still get, 90% confident. Its best is the same figure — the band is too tight to plot.

Measured over 2.5M games at this level and clock.

Playablewins about as often as it loses at this level

Roughly even — the middlegame decides more than this opening choice does.

Outcomes for Black

Draw 3.5 · Score = win + ½ of the draws · 2.5M games

Rank among the families Black can choose here
not ranked — this is a variation, not a family
Games in this context
2.5M
Best context
61.0% at 1400-1599 Classical
Worst context
43.2% at 1800-1999 UltraBullet
Average game length
34 moves
Games that end decisively
96.5%
Draws
3.5%

Best and worst are the strongest and weakest squares with at least 500 games behind them. The table further down shows every square, including thinner ones.

Extra Analysis

Deep-dive datasets for this opening

Time-Control Swing

Max swing: 12.6% · UltraBullet best · Classical worst

Where it holds · Black score by rating × clock

Green is clearly ahead for Black, grey is around even, red is behind. Tap a cell to measure there, and again to clear. It falls away as the rating rises: 54.3% at 0-999, 43.8% at 2500+.

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: 51.4% expected score (1,668 games)
  • 0-999 rating, Bullet: 52.3% expected score (63,841 games)
  • 0-999 rating, Blitz: 52.7% expected score (117,940 games)
  • 0-999 rating, Rapid: 54.8% expected score (61,045 games)
  • 0-999 rating, Classical: 60.4% expected score (873 games)
  • 1000-1199 rating, UltraBullet: 46.5% expected score (6,017 games)
  • 1000-1199 rating, Bullet: 49.5% expected score (105,523 games)
  • 1000-1199 rating, Blitz: 50.9% expected score (131,417 games)
  • 1000-1199 rating, Rapid: 52.5% expected score (51,120 games)
  • 1000-1199 rating, Classical: 55.7% expected score (1,710 games)
  • 1200-1399 rating, UltraBullet: 46.6% expected score (12,761 games)
  • 1200-1399 rating, Bullet: 49.7% expected score (159,816 games)
  • 1200-1399 rating, Blitz: 50.5% expected score (174,192 games)
  • 1200-1399 rating, Rapid: 51.6% expected score (52,541 games)
  • 1200-1399 rating, Classical: 56.1% expected score (2,844 games)
  • 1400-1599 rating, UltraBullet: 44.3% expected score (17,870 games)
  • 1400-1599 rating, Bullet: 49.8% expected score (198,279 games)
  • 1400-1599 rating, Blitz: 50.8% expected score (183,934 games)
  • 1400-1599 rating, Rapid: 52.8% expected score (55,013 games)
  • 1400-1599 rating, Classical: 61.0% expected score (3,604 games)
  • 1600-1799 rating, UltraBullet: 45.3% expected score (17,945 games)
  • 1600-1799 rating, Bullet: 49.4% expected score (221,529 games)
  • 1600-1799 rating, Blitz: 50.0% expected score (159,930 games)
  • 1600-1799 rating, Rapid: 50.8% expected score (42,179 games)
  • 1600-1799 rating, Classical: 51.3% expected score (2,292 games)
  • 1800-1999 rating, UltraBullet: 43.2% expected score (9,778 games)
  • 1800-1999 rating, Bullet: 49.6% expected score (192,030 games)
  • 1800-1999 rating, Blitz: 50.0% expected score (99,008 games)
  • 1800-1999 rating, Rapid: 50.4% expected score (22,573 games)
  • 1800-1999 rating, Classical: 49.7% expected score (645 games)
  • 2000-2199 rating, UltraBullet: 45.1% expected score (2,464 games)
  • 2000-2199 rating, Bullet: 49.3% expected score (138,829 games)
  • 2000-2199 rating, Blitz: 48.6% expected score (40,622 games)
  • 2000-2199 rating, Rapid: 49.1% expected score (6,509 games)
  • 2000-2199 rating, Classical: 44.4% expected score (149 games)
  • 2200-2499 rating, UltraBullet: 45.6% expected score (719 games)
  • 2200-2499 rating, Bullet: 48.0% expected score (77,917 games)
  • 2200-2499 rating, Blitz: 47.1% expected score (12,073 games)
  • 2200-2499 rating, Rapid: 44.0% expected score (867 games)
  • 2200-2499 rating, Classical: 42.6% expected score (12 games)
  • 2500+ rating, UltraBullet: 45.8% expected score (34 games)
  • 2500+ rating, Bullet: 46.2% expected score (15,250 games)
  • 2500+ rating, Blitz: 44.0% expected score (766 games)
  • 2500+ rating, Rapid: 40.8% expected score (31 games)
  • 2500+ rating, Classical: 42.3% expected score (5 games)

Related Openings

Parent
Mieses Opening
48.7%
Variations (2)
Mieses Opening: Myers Spike Attack
46.1%
Mieses Opening: Venezolana Variation
45.4%
Analyze Mieses Opening: Reversed Rat PositionsSee what each move is worth at your rating, move by move

Methodology

Across every rating and clock, the Mieses Opening: Reversed Rat scores 50.2% for Black — we are 90% confident the real figure is between 50.2% and 50.3% — from 2.5M Lichess games. Win rate, draw rate and loss rate come from games played December 2023 to November 2025.

How the figures are made
Whose games these are
2.5M+ rated games played on Lichess (2023-12 to 2025-11). The games are Lichess’s and free for anyone to use. What is ours is the reading of them. Last rebuilt January 2026.
Which games we count
  • Rated games only — nothing casual.
  • Both players within 200 rating points of each other. A mismatch tells you about the gap, not about the opening.
  • At least 2 moves played.
  • A game is filed under White’s rating.
Why every number comes with a range
A number off a few hundred games is a guess. The same number off millions is a fact. The range is what tells them apart, and it is what the lists rank on — so an opening cannot reach the top on a lucky run of forty games. The more games behind a figure, the narrower its range.
How much we need before we say anything
An opening page needs 100 games. A gambit needs 50 games at a rating before we will say whether it pays there. The chaos and trap lists need 500 games overall and 250 games at one rating or clock.

Frequently Asked Questions

What is the Mieses Opening: Reversed Rat win rate?

Playing the Mieses Opening: Reversed Rat, Black wins 48.4%, draws 3.5% and loses 48.1%. Counting a draw as half a point, that is an Expected Score of 50.2%. It rests on 2.5M rated games from Lichess.

At what rating does the Mieses Opening: Reversed Rat perform best?

The Mieses Opening: Reversed Rat performs best for Black at 0-999, with an Expected Score of 53.1% (245K games) and the highest Floor of any rating with enough games to read.

Is the Mieses Opening: Reversed Rat better in blitz or rapid?

For Black, the Mieses Opening: Reversed Rat scores higher in Rapid: an Expected Score of 50.6% in Blitz (920K games) against 52.4% in Rapid (292K games).

How sharp is the Mieses Opening: Reversed Rat?

The Mieses Opening: Reversed Rat has a sharpness score of 96.5 (very decisive), meaning 96.5% of games end decisively. Average game length is 34 moves.

What is the Mieses Opening: Reversed Rat win rate at 0-999?

At 0-999, Black wins 50.9%, draws 4.4% and loses 44.7%. Counting a draw as half a point, that is an Expected Score of 53.1%. It rests on 245K Lichess games, which average 29 moves.

What is the Mieses Opening: Reversed Rat win rate at 1000-1199?

At 1000-1199, Black wins 48.9%, draws 3.3% and loses 47.8%. Counting a draw as half a point, that is an Expected Score of 50.6%. It rests on 296K Lichess games, which average 31 moves.

What is the Mieses Opening: Reversed Rat win rate at 1200-1399?

At 1200-1399, Black wins 48.7%, draws 3.1% and loses 48.2%. Counting a draw as half a point, that is an Expected Score of 50.3%. It rests on 402K Lichess games, which average 32 moves.

What is the Mieses Opening: Reversed Rat win rate at 1400-1599?

At 1400-1599, Black wins 48.8%, draws 3.2% and loses 48.0%. Counting a draw as half a point, that is an Expected Score of 50.4%. It rests on 459K Lichess games, which average 34 moves.

What is the Mieses Opening: Reversed Rat win rate at 1600-1799?

At 1600-1799, Black wins 47.9%, draws 3.3% and loses 48.8%. Counting a draw as half a point, that is an Expected Score of 49.6%. It rests on 444K Lichess games, which average 35 moves.

What is the Mieses Opening: Reversed Rat win rate at 1800-1999?

At 1800-1999, Black wins 47.7%, draws 3.6% and loses 48.7%. Counting a draw as half a point, that is an Expected Score of 49.5%. It rests on 324K Lichess games, which average 36 moves.

What is the Mieses Opening: Reversed Rat win rate at 2000-2199?

At 2000-2199, Black wins 47.1%, draws 3.9% and loses 49.0%. Counting a draw as half a point, that is an Expected Score of 49.1%. It rests on 189K Lichess games, which average 37 moves.

What is the Mieses Opening: Reversed Rat win rate at 2200-2499?

At 2200-2499, Black wins 45.7%, draws 4.3% and loses 50.0%. Counting a draw as half a point, that is an Expected Score of 47.9%. It rests on 92K Lichess games, which average 38 moves.

What is the Mieses Opening: Reversed Rat win rate at 2500+?

At 2500+, Black wins 43.2%, draws 5.6% and loses 51.2%. Counting a draw as half a point, that is an Expected Score of 46.0%. It rests on 16K Lichess games, which average 40 moves.

What is the Mieses Opening: Reversed Rat win rate in UltraBullet?

In UltraBullet, Black wins 44.3%, draws 1.8% and loses 53.9%. Counting a draw as half a point, that is an Expected Score of 45.2%. It rests on 69K Lichess games.

What is the Mieses Opening: Reversed Rat win rate in Bullet?

In Bullet, Black wins 48.2%, draws 2.6% and loses 49.1%. Counting a draw as half a point, that is an Expected Score of 49.6%. It rests on 1.2M Lichess games.

What is the Mieses Opening: Reversed Rat win rate in Blitz?

In Blitz, Black wins 48.5%, draws 4.2% and loses 47.3%. Counting a draw as half a point, that is an Expected Score of 50.6%. It rests on 920K Lichess games.

What is the Mieses Opening: Reversed Rat win rate in Rapid?

In Rapid, Black wins 49.8%, draws 5.0% and loses 45.1%. Counting a draw as half a point, that is an Expected Score of 52.4%. It rests on 292K Lichess games.

What is the Mieses Opening: Reversed Rat win rate in Classical?

In Classical, Black wins 54.0%, draws 4.7% and loses 41.3%. Counting a draw as half a point, that is an Expected Score of 56.4%. It rests on 12K Lichess games.

Is the Mieses Opening: Reversed Rat a good opening?

The Mieses Opening: Reversed Rat is about level. Across all ratings, Black wins 48.4% of its games and loses 48.1%. It performs best at 0-999. Your results depend on your rating, time control, and how well you know the typical plans.