% nurikabe 548 by Adolfo Zanellati, http://www.janko.at/Raetsel/Nurikabe/548.a.htm
nurikabe
medium-
16 12
.....3.3.2......
8...........2...
..........2...2.
...2........2...
.2......2.....2.
.....3.........2
..3.1..2..2.3...
2........3......
...1..........2.
3....5..........
...........9...2
8...........2...
