% nurikabe 448 by Adolfo Zanellati, http://www.janko.at/Raetsel/Nurikabe/448.a.htm
nurikabe
medium-
12 12
......6..3..
..4.........
.4..........
..1..4...3..
.2.2........
.........3.2
.......2....
..5..2......
.3..........
.........2..
..2....3...3
2...2...2...
