WhereIsBlackCell (Kuromasu)

Kuromasu or also know as "Where is black cell".
The logic puzzle game of the year created by Nikoli (Sudoku's author)
· Put black and white cell on the right side
· Only one solution. Time limit to resolve the logic puzzle
· Try to end 4 world, more than 80 boards are waiting to you with differents levels
· Get the maximum punctuation

The following rules determine which cells are which:

1) Each number on the board represents the number of white cells that can be seen from that cell, including itself. A cell can be seen from another cell if they are in the same row or column, and there are no black cells between them in that row or column.
2) Numbered cells may not be black.
3) No two black cells may be horizontally or vertically adjacent.
4) All the white cells must be connected horizontally or vertically.