% nurikabe 343 by Halflength Sleeve, http://www.janko.at/Raetsel/Nurikabe/343.a.htm
nurikabe
medium-
18 10
3............3....
.........c..1....1
........1.........
.................2
8.3......4.2..9...
.1................
......2...........
.......1.......2..
..............7.5.
.a.3......5.......
