% nurikabe 89 by ooya, http://www.janko.at/Raetsel/Nurikabe/089.a.htm
nurikabe
medium
24 14
..a........5.....2.9....
..........2.............
8............3......6...
............2...1.......
..................3.2...
.............1..........
............2..4...1.4..
.....3....9.............
..4.3.3.........3..1....
...............4.......3
............2....6......
d...b..................4
.5......................
.....5....4......3.....8
