% nurikabe 469 by Adolfo Zanellati, http://www.janko.at/Raetsel/Nurikabe/469.a.htm
nurikabe
very hard
12 12
...2.2..3..2
3...........
.........3..
..2.4.....3.
............
.2..2..3....
..3.........
3....6......
....4...3..4
............
...........2
..5....2.2..
