% hitori 453 by Otto Janko, http://www.janko.at/Raetsel/Hitori/453.a.htm
hitori
medium-
10 10
52652a8432
37856a99a2
5312214856
a53592698a
92a8141753
519174224a
8264197335
7614493268
684127522a
16195aa114
