% hitori 471 by Otto Janko, http://www.janko.at/Raetsel/Hitori/471.a.htm
hitori
medium-
10 10
1a53599269
6591215887
5921a87aa6
369791a314
a64a397756
34a9772538
4295821293
7986a38955
988a826471
a361158444
