Are all boards solvable?

Random shuffles aren't always solvable (50% are). We generate boards by starting solved and doing random valid moves, guaranteeing solvability.

Games · Free tool

15 Puzzle

Classic 15-puzzle slider. Arrange tiles 1-15 in order. Every shuffle is solvable.

Updated May 2026

Moves

Time

0:00

Slide tiles into the empty space to arrange 1-15 in order. Click a tile adjacent to the empty space to slide it. Average solve: 50-100 moves; god-tier speedrunners hit 60-80 in under a minute.

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What it does

The classic 15-puzzle slider. Slide tiles into the empty space to arrange 1-15 in order. Every random board is solvable.

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Paste this snippet into any page. Loads on-demand (lazy), no tracking scripts, and sized to most dashboards. Replace the height to fit your layout.

<iframe src="https://freetoolarena.com/embed/15-puzzle" width="100%" height="720" frameborder="0" loading="lazy" title="15 Puzzle" style="border:1px solid #e2e8f0;border-radius:12px;max-width:720px;"></iframe>

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How to use it

Click any tile adjacent to the empty space to slide it.
Get tiles in order 1-15 with empty in the bottom-right.
Tracks moves and time.

Frequently asked questions

Are all boards solvable?: Random shuffles aren't always solvable (50% are). We generate boards by starting solved and doing random valid moves, guaranteeing solvability.

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