% hitori 423 by Otto Janko, http://www.janko.at/Raetsel/Hitori/423.a.htm
hitori
medium-
10 10
272251a333
46a2796183
2a71a3436a
81346549a6
2544288379
1439682258
6515483887
5253547a98
283a125524
3a78765546
