% nurikabe 438 by Otto Janko, http://www.janko.at/Raetsel/Nurikabe/438.a.htm
nurikabe
easy+
13 13
...3......4.3
....1..2.....
3............
.5...3.2.....
...........2.
........1....
.....2.3.....
.5.2.....3..2
.............
...........1.
2....2....3..
..4....2.....
.2...4....2.2
