OBJECTIVE
Slide the numbered tiles around the single empty space until they read 1 to 15 in order, left to right and top to bottom, with the gap in the bottom-right corner. Every scramble is solvable.
HOW TO PLAY
- Only tiles next to the empty gap can move. Tap one to slide it into the gap.
- Tap a tile further along the same row or column as the gap to slide that whole line of tiles at once.
- Build the order row by row. Try to finish in as few moves and as little time as you can.