Yin-Yang
Fill with black and white — both colors connected, no 2×2 same color
0:00
0 moves
Black
White
Empty
How to Play
1
Click to cycle: empty → black → white.
2
All black circles must form one connected group.
3
All white circles must also form one connected group.
4
No 2×2 area can be the same color. Red rings show violations.