Are all boards solvable?

We generate boards by toggling random cells from the all-off state, so by construction every board is solvable in the moves we used to scramble it (often fewer).

Games · Free tool

Lights Out

Classic Lights Out puzzle. Click cells to toggle them and 4 neighbors. Turn off all lights to win.

Updated May 2026

Moves: 0

Goal: turn off all the lights. Clicking a cell toggles it and its 4 neighbors. Every random board is solvable. Min solution is usually 6–12 moves; experts can solve in under 20 seconds.

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What it does

Classic Lights Out puzzle. Click a cell to toggle it and its 4 neighbors. Goal: turn off all lights. Every random board is solvable; experts solve in 6–12 moves.

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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/lights-out" width="100%" height="720" frameborder="0" loading="lazy" title="Lights Out" style="border:1px solid #e2e8f0;border-radius:12px;max-width:720px;"></iframe>

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How to use it

Click any glowing or dark cell.
It and its 4 neighbors flip.
Turn off every light to win.

Frequently asked questions

Are all boards solvable?: We generate boards by toggling random cells from the all-off state, so by construction every board is solvable in the moves we used to scramble it (often fewer).

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