% nurikabe 338 by Halflength Sleeve, http://www.janko.at/Raetsel/Nurikabe/338.a.htm
nurikabe
medium-
18 10
..................
......a..........7
...7...........1..
a.....1...1.......
..................
..................
..3....1..9..7..1.
............7.....
..4..........1....
7................8
