% hitori 424 by Otto Janko, http://www.janko.at/Raetsel/Hitori/424.a.htm
hitori
medium-
10 10
948497636a
1a56538924
3999877281
51783634a8
69a7aa2815
7851218a63
96a1a84837
68387a7472
731a929548
276939a17a
