% nurikabe 91 by ooya, http://www.janko.at/Raetsel/Nurikabe/091.a.htm
nurikabe
very hard
36 20
.....2.5........2........8.a.......8
....................................
..2..........7.................2...2
5..3......3.6........7..............
..4...........1.............1.3...5.
....................c...2...........
.b.........................2........
..8...3...1......................4..
........5......2......b......3......
.........1.7.....1.......6..........
.................................2.7
9..........................a........
..5.....2....2....5...........e.....
......3................6...........f
...........4...4....................
..........................a..4......
...............3..3.............3...
3....c.....3......................7.
....................................
..4..3..6.5...................f.2..3
