% hitori 536 by Otto Janko, http://www.janko.at/Raetsel/Hitori/536.a.htm
hitori
medium-
10 10
928a4a7193
75599a1668
93671aa556
1695946379
69a5384551
a481969289
5873a26542
a931675826
86424394a5
7714912136
