% nurikabe 480 by Adolfo Zanellati, http://www.janko.at/Raetsel/Nurikabe/480.a.htm
nurikabe
very hard
12 12
....4....3..
...2........
3......2..2.
.2...3.....2
.......2....
.....9...4..
......2....2
2...........
...2.9......
............
............
.4.....4.3..
