% nurikabe 306 by Adolfo Zanellati, http://www.janko.at/Raetsel/Nurikabe/306.a.htm
nurikabe
medium-
10 10
2.3....2.3
..........
.......3..
..3.2.....
2.....3...
.........2
.......1..
.9........
....9.....
.....5....
