% nurikabe 166 by ooya, http://www.janko.at/Raetsel/Nurikabe/166.a.htm
nurikabe
medium-
18 10
......4...5....7..
1.................
....6....2..4.....
..........7.......
...5..........3...
..7...............
.......4........3.
8...........1.....
.1..2....5........
..............7...
