Daily puzzle (2021-08-12)

Difficulty: Rating:

Heyawake

Author: O-le_o-le

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Blacken some cells in the grid so that no two black cells have a common edge and all white cells are connected. No horizontal or vertical sequence of white cells may span more than two outlined areas. Numbers inside outlined areas indicate the number of black cells in that area. Cells with numbers may be blackened.

Example puzzle

Grid control: Click the mouse button at the selected cell to change the color of the cell. Second click will put auxiliary cross sign, which doesn't affect correctness of the solution, but helps visually. You can also drag the content of one cell to another with the mouse. More details about grid control are at the help page.