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Lights Off

Zip wired the switches wrong: each one flips itself and its four neighbours. Turn every light off in as few presses as you can. Three boards per run.

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Lights Off

Classic Lights Out with Zip. Pressing a switch flips it and its four neighbours. Turn every light off, ideally in the fewest presses. Each run is three boards: pick Easy (3×3), Medium (4×4) or Hard (5×5).

3 boards
3 levels

How to play

Press. Tap a switch to flip it and the switches above, below, left and right of it. On a keyboard: arrows move, Enter presses.
Goal. Turn every light off. Each board shows the fewest presses it can be done in.
Hint. Hint (or H) marks one press of a best solution, for 150 points. Reset puts the board back as it started; your moves still count.
Score. Per board: Easy 500, Medium 800, Hard 1,200, minus 2 a second, 10 per move over the minimum and 150 per hint, never under 100. Three boards add up to your run.

Quick tips

Order doesn't matter. Pressing the same switches in any order gives the same grid, so think about which switches to press, not when.
Never press twice. Pressing a switch twice cancels out. A best solution presses each switch at most once.

3 more tips in the Lights Off guide →