How to play

• A tap flips the cell you pressed and the cells above, below, left and right of it.
• The goal is to switch every light off.
• Pressing the same cell twice returns the board to where it was.
• The order of your presses does not matter — only which cells you pressed, and how many times.
• Par is the number of moves the board was scrambled with.
• Each board you clear unlocks a bigger, deeper one, and your place is saved.

Tips

• Work top down: use the second row to switch off the first, then the third to clear the second.
• After the sweep only the bottom row can be lit — the pattern there tells you which cells in the top row to press.
• Pressing a cell twice is always wasted, so never repeat.
• On odd sizes the corners are usually part of the solution; on even ones they rarely are.