Sudoku
Puzzle
15-Puzzle
15-Puzzle
Slide the numbered tiles back into order.
About 15-Puzzle
The 15-Puzzle is the classic sliding-tile puzzle, free in your browser. Slide the numbered tiles into order — 1, 2, 3 and on, with the gap last — by moving tiles into the empty space. Play the quick 3×3, the classic 4×4 or the tough 5×5. Every shuffle can be solved; fewer moves and a faster solve score more.
How to play
Click a tile in the same row or column as the gap to slide it (and any tiles between) toward the gap, or use the arrow keys. Put the tiles in order with the gap in the bottom-right corner to win. Choose 3×3, 4×4 or 5×5 on the menu.
| Action | Keyboard | Touch |
|---|---|---|
| Slide tiles | ClickArrowsWASD | Tap |
| Pause | PEsc | — |
Tips for 15-Puzzle
- Solve the top row first, then the second, and leave the last two rows to solve together.
- Place the last two tiles of a row as a pair: park them, then slide them in together.
- Click a tile far along the gap's row or column to slide several tiles at once.
- Count moves — fewer moves score more than speed alone.
- Start with 3×3 to learn the patterns, then try the classic 4×4.
Questions about 15-Puzzle
Can every puzzle be solved?
Yes. Shuffles are made from real slides of a solved board, so they always have a solution.
Who invented it?
The 15-puzzle dates from the 1870s and has been a favourite brain teaser ever since; this is our own version.
How is the score worked out?
A base for the board size plus bonuses for fewer moves and a quicker solve.
Is 15-Puzzle free?
Yes. 15-Puzzle is free to play on Nexora Play, with no download and no sign-up needed.
Can I play 15-Puzzle on my phone?
Yes. It runs in the browser on computers, tablets and phones, with touch controls on phones and tablets. You can also add Nexora Play to your home screen like an app.
Do I need an account?
No. You can play as a guest and your best scores are kept in this browser. A free account (13+) keeps your progress across devices.
