% hitori 554 by Otto Janko, http://www.janko.at/Raetsel/Hitori/554.a.htm
hitori
easy+
10 10
a941489767
81a6426797
5a1a277956
9a47a93346
79628a4453
6198a683a1
966594a1a1
552697481a
4578165639
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