PGN CHESS ANALYSIS
Free PGN Chess Analysis with Brilliant Moves & Accuracy
Enter a Chess.com or Lichess username, or paste any PGN for instant online chess analysis: accuracy, Brilliant → Blunder grades, eval graph and Stockfish best lines. Unlimited and free — or explore single positions on the chess analysis board.
Try the instant demo — step through the moves, or import your own game.
Step through the game
move 7/18
tip: use ← → keys • eval 59cp • accuracy 89%
♞ Coach • move 4. Ba4
✓ GoodPlayable, but imprecise.
Nothing serious yet, but small slips add up. In the opening, ask: does my move improve my worst piece?
BIGGEST LESSONS — TAP TO REPLAY
Move grades — White vs Black
♙ 91% · ♟ 86%
| Grade | ♙ You | ♟ Opponent |
|---|---|---|
| ✦Brilliant | 0 | 0 |
| ★Best | 1 | 1 |
| !Excellent | 2 | 2 |
| ✓Good | 4 | 3 |
| ?!Inaccuracy | 2 | 1 |
| ?Mistake | 0 | 1 |
| ??Blunder | 0 | 1 |
Report • accuracy 89%
1 blunders1 mistakes
BOARD DESIGN
♟ Black — Opponent to move
44%
56%
8
7
6
5
4
3
2
1a
b
c
d
e
f
g
h
win probability — White 56% · Black 44% (White is slightly better)
♙ White — You
How the coach works: every blunder ships with a one-line idea plus forcing candidate moves. Live Stockfish analysis plugs into this same UI — no redesign needed.