% hitori 254 by Otto Janko, http://www.janko.at/Raetsel/Hitori/254.a.htm
hitori
medium-
10 10
71a7a24293
1585269a7a
2196237181
4741388562
78a8946858
86857a1419
a444579358
9354719828
49728715a6
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