Checkmate Rewind

Every case starts at the end: a chess game is over, and the final position is the only evidence. Take the moves back one by one - return captured pieces, undo castling, en passant and promotions - and restore the starting position in exactly the number of moves the case allows. Learn the backwards moves in 8 short lessons, then crack 55 handcrafted cases, from quick blunders to famous opening traps. A new case every day comes from real Lichess games.

Tap or click a piece, then tap the square it came from - or drag it back. Unwind the game to the starting position in exactly the given number of moves. Take back undoes your last move, Start over resets the case, Hint shows which piece moved last.