Ebony & Ivory (1159)

Other names: Paint by Max

Put a black square or a white circle into each cell of the grid. A number to the left of (or above) the grid indicates the length of the largest group of consecutive cells along that row (or column) that all contain black squares. A number to the right of (or below) the grid indicates the length of the largest group of touching cells along that row (or column) that all contain white circles. As a special case, if the clue "0" is given, it means there should be no matching symbols of the appropriate type in that row (or column).

Reference: WPF (1)