% nurikabe 379 by Otto Janko, http://www.janko.at/Raetsel/Nurikabe/379.a.htm
nurikabe
medium
13 13
2..2.4...4...
........3...3
.2...........
...2..3......
2...........3
..3...3......
....4....4..1
4............
..........2.4
..1....3.....
......1......
.............
2.5..4......5
