grid contains black circles with numbers. The aim is to divide the grid into regions. Each region contains one black circle. A black circle is an eye that looks in all four directions until a region border. The number in the cell represents how many cells of the region the eye does not see.
"Eye" Concept: Each black circle represents an "eye" that looks in all four directions (up, down, left, right). The "eye's" vision is blocked by the region's borders.