HOW TO PLAY
How to play 15 Puzzle
Move tiles next to the blank space on a four-by-four board to arrange numbers 1–15 in order. Every shuffle is made from legal moves, so each puzzle is solvable.
Controls
- Click a tile next to the blank space
- Arrow keys: move a neighboring tile
- R: shuffle; F: toggle fullscreen
Tips
- Finish the top two rows before arranging the bottom.
- Every shuffle is solvable because it uses legal moves.