Analyse your lichess games

Type your lichess username on the home page and your recent games are listed — the same public export anyone can read, with no login and no token to grant. Pick one and Stockfish grades every move: a fast pass over the whole game first, then a deeper look at the moments that decided it.

The engine is downloaded to your browser and runs on your own processor. Your games are not uploaded, stored on a server, or seen by anybody else, because nothing in the analysis sends them anywhere.

It is worth being straight about this. Lichess gives you unlimited computer analysis, free, on the same engine, with no account required and no daily limit — and it is open source. If what you want is one game analysed, use it; nothing here beats it at that.

This site exists for the question that comes after: not what went wrong in this game but what keeps going wrong in my games.

• The mistakes that repeat. Twenty games reviewed at once, with the errors sorted by how often they happen and what they cost — hanging pieces, losing the exchange, missing a defensive resource.
• The openings that cost you. Your record and your accuracy by opening, tied to a page about each one with the traps people fall into.
• When on the clock you go wrong. The moves you play instantly and the moves you play in time trouble are two different weaknesses, and they are separated here rather than averaged together.
• Puzzles from your own blunders. The positions you actually got wrong, played back to you until you find the move you missed.

Type your username or paste a PGN — free, no account, nothing uploaded. Chess.com games work the same way, and the comparison page explains how this differs from a paid review. If you only want to know where one game went wrong, the blunder check is the short way round.