% hitori 337 by Otto Janko, http://www.janko.at/Raetsel/Hitori/337.a.htm
hitori
medium-
10 10
7779536a85
9214354457
7686123595
434a7a1218
89a1469131
45531a8969
a454927616
865238575a
59376428a6
1274845543
