Easy

Lights #702 · 6×6

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Lights #702 is a 6×6 board at easy level. It starts with 13 of its 36 lights on, and the one solution needs 5 presses.

Row 5 is the brightest, with 4 lights on. If you chase from the top, that is where most of the work happens.

2 corner lights are on. A corner light has only two neighbours, so it is changed by just three presses: itself and the two lights next to it.

Easy boards often show the solution in the picture itself: look for a plus shape of five lights, which is one press in its middle.