% nurikabe 456 by Grant Fikes, http://www.janko.at/Raetsel/Nurikabe/456.a.htm
nurikabe
easy+
18 10
..4...............
1.................
....4.7..5.....7.5
..............4...
........2.......2.
......5...........
..........c...3...
8.................
........2........1
......6...2.......
