15 Puzzle — the classic sliding puzzle for a quick brain break
Slide the scrambled number tiles back into order on a 4×4 board using the single empty space. The rules take seconds to learn, and because every game tracks your moves and time, it is a light, satisfying way to sharpen focus and spatial reasoning during a short break.
How to use
- Tap or click a tile that sits next to the empty space, and it slides into that gap.
- Prefer no clicking? Use the arrow keys, or swipe on a touch screen, to push tiles instead.
- Arrange the tiles 1 through 15 in order with the empty space in the bottom-right corner to win.
- Press "New Game" any time to reshuffle into a fresh, always-solvable layout.
Features & tips
- The shuffle is built by making valid moves from a solved board, so you never get an impossible position.
- The timer only starts on your first move, so take a moment to study the board before you begin.
- Solving the top two rows first, then finishing the bottom two together, is a reliable strategy.
- When you finish, your move count and elapsed time appear so you can chase a better score.
FAQ
Q. Can a shuffle ever be unsolvable? A. No. Every layout is generated from a completed board, so a solution always exists.
Q. Does it work with a keyboard? A. Yes. Arrow keys slide tiles, and touch devices support swiping too.
Q. Are my results saved? A. Your moves and time show on the win screen and are measured fresh for each new game.
