% hitori 405 by Otto Janko, http://www.janko.at/Raetsel/Hitori/405.a.htm
hitori
medium-
10 10
56818a7932
853a962377
a737868215
82291763a1
2446a79843
9197837a57
4763128697
647728858a
3a22591746
93a4783323
