% nurikabe 259 by Robert Hollenstein, http://www.janko.at/Raetsel/Nurikabe/259.a.htm
nurikabe
medium-
18 10
......6.......8...
...............8..
....4.........8...
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.....5.......8....
.......8..........
................8.
6...........8.....
....8.............
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