Corner Zap

No rectangles allowed!

Corner Zaps light grid has 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 fourth wont ... by zapping it into a zillion pieces!

Amp-up the challenge with these options:

⌁ Two grid sizes
⌁ One, two, or three light colors
⌁ Locked lights

Watt are you waiting for, a revolt? Add sohm spark to your life with Corner Zap!