Game analysis · free · no signup
Why did that move lose?
Paste a game from Lichess, Chess.com or your own notation and see what each move cost — and which part of the position paid for it.
Every move gets a verdict and a reason, not just a number: a review names what the move gave away — material, king safety, pawn structure or piece activity — and opens on the moment the game turned. Nothing you paste leaves your browser.