% nurikabe 547 by Adolfo Zanellati, http://www.janko.at/Raetsel/Nurikabe/547.a.htm
nurikabe
hard-
16 12
4...9.....3...3.
................
......8..2....3.
....2......2...8
.......2........
.8.......3..2...
.............2..
4.....2.........
..1.2......2....
......2......1..
..1......2..8...
...2..2.........
