% nurikabe 650 by Tom Collyer, http://www.janko.at/Raetsel/Nurikabe/650.a.htm
nurikabe
medium
24 14
................1.2.....
.1.2..........1.....2.2.
...............1.2......
1............c.....2....
...........b...1........
..........a.....2...3..3
........................
.........9.......3.3....
........................
1..2....8.8.....4.......
...........7...5.....4.4
.............6..........
.2.................5....
..2........7.6..........
