Turn Them Off

However, turning off some lights will turn on other lights and visa versa. Can you figure out how to turn off all of the lights?
Includes:
4 different board sizes: 3x3, 4x4, 5x5, and 6x6.
Hundreds of pre-built puzzles for each board size
Create your own puzzles with the puzzle maker!
Random puzzles for a near infinite number of puzzles.
Can't figure out the solution to a puzzle? The puzzle solver will show you the solution to any puzzle, even your own! Never get stuck again!