Check chess accuracy from Chess.com, Lichess, orย PGN. Compare your result byย rating andย see how closely your moves matched Stockfish.
What Chess Accuracy Means
Chess accuracy estimates how closely your moves follow theย engine line. Aย higher score means you stayed closer toย theย best moves throughout theย game.
Theย number isย most useful when you compare itย against your own rating, your time control, andย your previous games. Aย 78 percent game can beย excellent forย one player andย disappointing forย another.
Good Chess Accuracy byย Rating
Use these ranges asย aย baseline, notย asย aย strict rule:
| Rating range | Typical accuracy | What itย usually means |
|---|---|---|
| Under 800 | 50-60% | Many blunders are normal while basic patterns are still forming. |
| 800-1200 | 60-70% | Major mistakes start dropping, butย tactical misses are still common. |
| 1200-1600 | 70-80% | More stable play with fewer large evaluation swings. |
| 1600-2000 | 80-88% | Good positional play andย cleaner conversion inย simpler positions. |
| 2000-2400 | 85-92% | Strong precision with fewer unforced errors. |
| 2400+ | 90-98% | Master-level accuracy with only small losses inย hard positions. |
Time pressure, sharp openings, andย winning orย defending difficult endgames can move these numbers upย orย down.
What Changes Your Accuracy
- Time controlย โ Bullet andย blitz usually produce lower accuracy than rapid orย classical because you simply have less time toย calculate.
- Position typeย โ Wild tactical positions punish one inaccurate move much harder than calm endgames.
- Game stateย โ Winning positions can still lead toย low accuracy ifย theย engine sees cleaner conversions than theย moves you chose.
- Opponent pressureย โ Strong opposition creates more practical mistakes even when theย position isย theoretically holdable.
How theย Accuracy Calculation Works
chess.rodeo uses engine evaluations rather than aย simple blunder count:
- Stockfish evaluates each position andย theย best available move.
- Your played move isย compared toย that engine recommendation.
- Theย evaluation loss isย converted into win-probability loss.
- Those losses are aggregated into aย final accuracy score forย theย game.
Chess.com, Lichess, andย chess.rodeo
Different platforms calculate accuracy differently. Chess.com uses CAPS, while chess.rodeo follows theย Lichess-style win-probability approach.
That means theย exact percentage may differ across sites, butย theย trend still matters. Track your games onย theย same platform ifย you want aย stable measure ofย improvement.
Related Analysis Tools
- Free Chess Analysisย โ Compare unlimited analysis onย chess.rodeo with Chess.com andย Lichess.
- PGN Analyzerย โ Upload PGN files andย review full games move byย move with Stockfish.
- FEN Analyzerย โ Analyze aย specific position when you care about one critical moment.