Chess analyst

Postmortem

Drop a PGN, say which colour you had, and watch Stockfish replay the game — why a move was a blunder, the mating line you missed, and any brilliant sacrifice.

PGN only · analysed in this browser
You played
Engine depth

Stockfish 18 NNUE, lite single-thread. Standard is the right default.

Stockfish starts the first time you analyse.

Or try a sample