% nurikabe 515 by Maarten Lffler, http://www.janko.at/Raetsel/Nurikabe/515.a.htm
nurikabe
medium-
10 10
.4........
....4..3..
5.......2.
....5.8...
..........
.2.......2
..........
....3.....
.4....2...
..........
