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.
• Chase the lights down. Clear the top row by pressing the switch just below each lit light, then do the same row by row. What's left on the bottom row tells you which top switches to press first.
• Watch the minimum. The Moves counter shows your presses against the fewest possible. Every extra press costs 10 points.
• Hints cost more than thinking. A hint marks one press of a best solution for 150 points. On Easy a few seconds of thought is cheaper.