% nurikabe 78 by ooya, http://www.janko.at/Raetsel/Nurikabe/078.a.htm
nurikabe
medium-
18 10
.....6...4....4...
..................
..........2.2..2..
.................6
...........8......
.4...........2....
....6.....6....4..
.....6........4...
.......2.4........
4.............2.8.
