% nurikabe 169 by ooya, http://www.janko.at/Raetsel/Nurikabe/169.a.htm
nurikabe
medium-
18 10
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.4..4..4.....4....
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.............4.4..
..4...............
.4..4....4........
.......4...4...4..
.4................
..4........4..4...
.....4.4..........
