% nurikabe 7 by Warai Kamosika, http://www.janko.at/Raetsel/Nurikabe/007.a.htm
nurikabe
medium-
10 10
4.1.......
......7..2
..........
....2.....
..........
a...1.3..5
.....3..4.
..........
..2.......
.........7
