% nurikabe 171 by ooya, http://www.janko.at/Raetsel/Nurikabe/171.a.htm
nurikabe
easy+
18 10
........5..3......
b.................
.1....2........4..
..2..3............
.3.....2....2....5
...............5..
...2...2.2...3..1.
..................
........3...7.2.6.
..6.3.............
