% nurikabe 157 by ooya, http://www.janko.at/Raetsel/Nurikabe/157.a.htm
nurikabe
medium
24 14
..4.4...3...............
2.....................4.
.....3......8...5....4..
.6...........1....4.....
.........2...........4..
....1...2.....3.....7...
..................1.....
1.2..4......5..5........
.........6..........5...
2..1...5...........2....
....2.....2............g
..............1..8......
4........a..............
..3.....................
