% nurikabe 652 by Tom Collyer, http://www.janko.at/Raetsel/Nurikabe/652.a.htm
nurikabe
medium-
10 10
..........
..3....7..
.1..1...5.
......2...
..3.......
....2.....
......2...
.7......3.
..1....5..
..........
