Kurodoko

The puzzle panel is a rectangular grid, some of which contain numbers. The squares need to be blackened according to the following conditions:

Each number indicates the number of horizontal and vertical white squares starting from that square; 

The number of white squares will be limited by the black squares or the edges of the disk;


The squares containing numbers must be white;
Black squares must not be connected horizontally or vertically;


All white squares must be continuous horizontally or vertically and form a white space.


Where is Black Cells?