% hitori 209 by Otto Janko, http://www.janko.at/Raetsel/Hitori/209.a.htm
hitori
hard-
17 17
dg1b4da9bh87e2ch5
abgc81hdhfg372h4a
3f48fd6829gb5h7he
e9gdda45d4g2676h3
75afc9h2d6b77g3f1
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cd793111efh8a4a58
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4352eg956ca1dh872
4e857cg62gaaa88d3
6a3hga21587c4dbh9
b6919f7bde2485287
76hab7e5912f31gc4
b42287dhc1gee366h
d1b7a7cg8149h22eg
