% nurikabe 233 by ooya, http://www.janko.at/Raetsel/Nurikabe/233.a.htm
nurikabe
easy
10 10
....2.5...
..1.......
.3........
....3.3.1.
.....5....
.2......4.
....2.....
..........
.4....2...
..3......2
