% nurikabe 575 by Adolfo Zanellati, http://www.janko.at/Raetsel/Nurikabe/575.a.htm
nurikabe
medium
15 10
...4.....3..4..
....3..2.......
2..2..........2
........7....2.
2..............
....4..4....3..
4....4...3....2
...............
...2...........
....2..3....3..
