% nurikabe 430 by Otto Janko, http://www.janko.at/Raetsel/Nurikabe/430.a.htm
nurikabe
hard-
13 13
5...........4
..3..........
...1....5..1.
......2...1..
............1
..4.....2....
......3....3.
........3...5
.3..7.....1..
1........3...
.............
...1...2.1...
4....3......2
