Sliding Tiles

How to play

1. Pick a board size and press Play.
2. Click or tap a tile next to the gap to slide it in. Choosing a tile further along the gap's row or column slides the whole line.
3. On a keyboard, the arrow keys (or WASD) move the tile on that side of the gap into it. On touch, you can also swipe the way a tile should slide.
4. Put every piece back in its home cell, with the gap in the bottom-right corner, to restore the picture.
5. Every tile shifted is one move. Fewer moves is better: the star goal under the board shows the move limit for three and two stars.
6. Undo (or U / Z) slides your last move back; it counts as moves, so it fixes slips but never improves a score.
7. Use View to switch between Picture, Picture with corner numbers, and Numbers. Give up (tap twice) ends the run without a score. Your run is saved, so you can Continue later.

Controls

Keyboard

• Click a tile — slide it (or its whole line) into the gap
• Arrows / WASD — move the tile on that side of the gap
• U / Z — undo the last move (counts as moves)
• V — change view · H — corner numbers
• ? — how to play · Esc / Space — pause
• M — mute

Touch

• Tap a tile — slide it (or its whole line) into the gap
• Swipe — slide a tile in that direction
• Undo button — slide the last move back
• View button — Picture / corner numbers / Numbers
• Give up button (tap twice) — end the run