Nurimisaki

Nurimisaki (from Japanese, literally "paint a cape") is a logic puzzle invented by Nikoli. A rectangular or square grid contains circles in some cells; a circle may have a number inside or not. The task is to blacken some cells of a grid according to the following rules:

Nurimisaki

Cross+A can solve puzzles from 3 x 3 to 30 x 30.