% nurikabe 470 by Adolfo Zanellati, http://www.janko.at/Raetsel/Nurikabe/470.a.htm
nurikabe
medium
12 12
...4...7.3..
............
.2........2.
..2........3
....2..6....
2..4.3......
............
2.........5.
......2.....
..3.......1.
3......2....
..2..2...3..
