% hitori 406 by Otto Janko, http://www.janko.at/Raetsel/Hitori/406.a.htm
hitori
medium-
10 10
1384713828
62898a3814
697a512369
454a163278
553164a883
786663247a
3a47827196
94423a9597
9128174a55
a495281845
