% nurikabe 11 by Warai Kamosika, http://www.janko.at/Raetsel/Nurikabe/011.a.htm
nurikabe
medium-
18 10
.7....2.3.........
..3........2..3...
.............3....
......1...2.......
..2.....b.........
...1......1.....3.
..................
3...7.........3...
...b........4..8..
...........1......
