Where do I find a PGN?
When a game ends, most chess sites offer to download or copy the move list as a PGN.
Go through a chess game move by move
Upload a PGN file or paste the PGN of a finished game. For a single position, paste its FEN. Step through the moves on the board, follow the evaluation and find the moments that mattered. The analysis runs on your own computer, and no account is required.
Step 1Paste text or pick a file — the format is detected for you
Nothing to hand?
What is a FEN?
It is a one-line record of a single position: where the pieces stand, whose turn it is and which special moves are still allowed. You can copy it from a board editor.
Why does the evaluation keep changing?
The longer the search runs, the more replies it checks. A fast result can shift a little when you look again.