% nurikabe 75 by ooya, http://www.janko.at/Raetsel/Nurikabe/075.a.htm
nurikabe
medium-
18 10
..........2......2
.3................
..2...5.....5.....
.....8.......3....
1.......1........2
.....3............
......3.......3.1.
.3.......6.5......
........7.......5.
..2......7........
