Yin-Yang
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How to play and about the game
How to play
- Black cells form one connected area, and so do white cells.
- No 2×2 square may be one colour.
- Dotted cells keep their colour and never change.
Controls
Pick Black, White or Clear, then tap a cell. Keyboard: arrows move, 1 black, 0 or 2 white, Delete or Backspace clears, H hint, U undo.
About this game
A 30-level campaign on 5×5 to 9×9 boards, plus a daily puzzle. Each colour forms one connected area, no 2×2 square is one colour, and each level has one solution.
- 5–9 min
- Single player
- Levels
- 30, 5×5 to 9×9
- Solution
- Unique, solver-checked
- Help
- Hint, undo
Strategy and tips
Four steps from your first game of Yin-Yang to expert play.
- First game
Three cells of one colour in a 2×2 square force the fourth to be the other colour, because four of one colour is forbidden.
- Getting better
An open cell that is the only link between two pieces of one colour must take that colour, or the pieces split apart.
- Confident
Before you paint a cell, check that the other colour still forms one piece, and that no 2×2 square turns solid.
- Expert
Work outward from the dotted cells. Each placed colour narrows the choices for the cells around it.
Common mistake Painting a cell only because it looks like a gap. A wrong move is not applied and counts as a mistake; five end the attempt.
