Pieceproof

Block puzzles with no bad luck.

Every piece is shown up front and every board is proven solvable by our solver. If you lose, there was a way — find it.

Play nowToday's daily

60 stages

Clear lines with a fixed set of pieces. Stones from stage 21, double-hit ice from stage 41.

Daily board

One new puzzle a day. Share your stars and tries.

Plays anywhere

Mouse, touch or keyboard. Under 1 MB, loads in a second, no install, no account.

How to play

  1. Drag a piece from the tray onto the 8×8 board (or press 1–3, arrows, Enter).
  2. Fill a full row or column to clear it.
  3. Reach the stage goal before you run out of pieces. One undo per try.