% nurikabe 474 by Adolfo Zanellati, http://www.janko.at/Raetsel/Nurikabe/474.a.htm
nurikabe
medium-
12 9
...9..3...2.
2...........
............
.....3....2.
2.4.........
.....2......
..3......9..
.....2..2...
2........3..
