Proposition II.
Yin-Yang
The Special Daily — a 30×30 board. Fill it so all the black stones touch in one group, all the white stones touch in one group, and no 2×2 square is a single colour. One puzzle a day, carried over from puzzle-yin-yang.com with its creator's blessing.
- Grid
- 30 × 30
- Puzzles
- One a day
- Source
- puzzle-yin-yang
- Solved
- 0
- Streak
- 0
- Best
- 0
Solved.
How to play
Goal. Every cell ends up black or white, satisfying all three rules at once.
- All black cells form one group, connected edge to edge. Diagonals do not count.
- All white cells likewise form one single connected group.
- No 2×2 square anywhere is entirely one colour. Squares that break this are flagged as you play.
Click a cell to cycle it empty → black → white, or drag to paint a run of them. Right-click cycles the other way. Press Z to undo — a whole drag comes back in one go. The stones carrying a dot are the puzzle's given clues and cannot be changed. Hover a stone to light up everything joined to it — Groups off drops that if you would rather have the frames. Your progress is kept if you close the tab.
A new board arrives each day. Solving on consecutive days builds a streak; miss a day and it resets.
Yin-Yang is also known as Shirokuro. This is the Special Daily from puzzle-yin-yang.com, reproduced with the site creator's permission. Go there for every other size, a solver and an archive.