Quadflip

Every piece once. Every tile blank.

0:00

Number keys pick a piece. Arrow keys move it over the board. Space or Enter stamps it, flipping the four tiles under it. Backspace or Z takes back the last stamp.

Levels

How to play

  1. Turn every tile back to blank paper.
  2. Pick a piece, then click the board: the four tiles under it flip.
  3. Tap a piece below the board to pick it. Then press and drag on the board to aim it, and let go to stamp: the four tiles under it flip. Let go off the board to cancel.
  1. Use every piece exactly once. There's only one way to do it.
  2. Tap a used piece to lift it off again.

Keyboard: 1–5 pick a piece, arrows to move it, Space to stamp, Z undo, P pause.