Load any game by chess.com or Lichess username, or paste a PGN or Lichess game link, and See The Mate runs it through Stockfish 18 at configurable depth. You get a full evaluation graph, a best-move suggestion for every position, and a classification for each move you played — all for free, with no daily limit.
Depth is adjustable, typically between 10 and 20 ply depending on your device. Deeper analysis takes longer but finds more accurate best moves, especially in sharp tactical positions.
Yes. Paste any PGN directly into the analyze box and it will be parsed and evaluated the same way as an imported game.
Raw centipawn scores swing wildly in decisive positions, which makes a linear graph hard to read. See The Mate compresses large advantages with a tanh curve, the same approach used by chess.com, so close games and won games are both easy to read at a glance.
A move is classified as a blunder when it causes a large drop in evaluation compared to the engine’s best move — typically a swing of 200+ centipawns, or one that turns a winning or equal position into a losing one.