About Lights Out

Lights Out is a logic puzzle. Tapping a light flips it and its four neighbours. Starting from a lit-up grid, your job is to work out which lights to press so that every single one goes dark.

How to play

1. Tap a light to toggle it and the ones above, below, left and right.
2. Plan your presses — order doesn't matter, but which lights you press does.
3. Turn every light off to solve the puzzle.
4. Try to do it in as few moves as possible.

Tips

Work from the top row down: press the light directly under each lit light to chase them to the bottom, then solve the last row.