% nurikabe 264 by Daniel Adams, http://www.janko.at/Raetsel/Nurikabe/264.a.htm
nurikabe
very hard
15 15
...............
.........9....4
3..2........2..
......2........
..........4..2.
...5.3..5......
..2........1...
.......7.......
...3........3..
......2..5.7...
.2..3..........
........2......
..3........4..2
1....7.........
...............
