Lights off puzzle
Some lights on the board are on. Pressing a light switches it and the lights directly above, below, left, and right of it. Turn all of them off.
Moves: 0Lights on: 0Best: No record yet
Pressing a light flips it and the four lights touching it. Turn every light off.
Records are kept in this browser. Sign in to sync them to your account.
How to play the lights puzzle
- Press any light. It changes together with the lights touching its four sides.
- Watch how each press affects the lights around it and plan the next press.
- The puzzle is solved when no light is on. Fewer presses is better.
The order of presses does not matter, and pressing the same light twice cancels out. A good solution never presses a light more than once.
Work from the top row down: press the light under every lit one so that the row above goes dark, then deal with the last row.