Author: Andrey Bogdanov
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.
Grid control: Click the mouse button at the selected cell to change the filling of the cell. More details about grid control are at the help page.