% nurikabe 579 by Adolfo Zanellati, http://www.janko.at/Raetsel/Nurikabe/579.a.htm
nurikabe
medium
18 12
..2.2..4..3....2.2
..................
...3..2..2.....2..
3...........3.....
.......2...3...6.2
.3...3...3........
2...............2.
...2.........2....
.......2..........
4.........3.2.1...
..3..2..3.........
...........3..3.3.
