Type: Yin-Yang

Rules: In each cell, place either a white circle or a black circle. The white circles must be orthogonally connected, but no 2x2 group of cells can contain all white circles. The same is true for the black circles.

Example puzzle:
(try on puzz.link)
Example solution:

Puzzles with this type:

Entry Date Type Theme
18 7/15/2020 Yin-Yang