% nurikabe 93 by ooya, http://www.janko.at/Raetsel/Nurikabe/093.a.htm
nurikabe
very hard
36 20
.8.2..4..........8........5....2.4..
........3.........4....5.4..........
.........7............3......1.3..2.
.....4.....2...............2........
............9.5.......6.............
.........3........1.........3.3.....
2.......5.................4....4.4..
............4........3...3..........
..3..........5..3...2..4........3..2
..........1...............6.......3.
.......6....6.......1.......4.......
...5.4.....4...........9............
2................6.........5....2...
....1.......5.....b...5..........5..
...4...2............4.......3......5
.....6.....2.................2......
..2.................3...............
..................3.................
......2.4...4....3.................8
....6........3.........9......6.....
