% nurikabe 506 by Grant Fikes, http://www.janko.at/Raetsel/Nurikabe/506.a.htm
nurikabe
easy+
18 10
................1.
..5....l......3...
..................
..5...1..........1
5.................
..................
.............4....
2.....7..........3
.2.....9...3....2.
.........4..1.....
