Solve replay for Matthias

Scores

Yin Yang

Author: Andrey Bogdanov

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Fill every cell with either a black circle or a white circle. No 2x2 square of cells can be entirely filled with circles of the same colour. All cells filled with the circles of one colour must form a single edge-connected region.

Example puzzle

Grid control: Click the mouse button at the selected cell to change the color of the cell. You can also drag the content of one cell to another with the mouse. More details about grid control are at the help page.