The Corner Zap light grid has only one rule:
A single color cannot appear at all four corners
of a rectangle.
Place your colors carefully, because once three corners of a rectangle match, the grid guarantees that the last won't
... by zapping it into a zillion pieces!
Amp-up the challenge with these options:
Watt are you waiting for, a revolt?
Add sohm spark to your life with Corner Zap!