% nurikabe 61 by ooya, http://www.janko.at/Raetsel/Nurikabe/061.a.htm
nurikabe
medium-
16 10
......4.....3...
3.........3....1
..4......2......
...6.2..........
...........a....
..5....4.......4
........2.......
.3..............
8............6..
..............3.
