% nurikabe 369 by Otto Janko, http://www.janko.at/Raetsel/Nurikabe/369.a.htm
nurikabe
medium-
13 13
..2..3......5
2.....1......
............2
2..2...4..2..
...........1.
...2..2.2....
..1.........2
4............
.....3..4.3..
..2.........3
.3...3.2.....
.............
2......6....3
