% hitori 510 by Otto Janko, http://www.janko.at/Raetsel/Hitori/510.a.htm
hitori
medium
12 12
21a7a3242c9b
bc6535765241
1b6274959618
a379bc8b3a51
261646b678c2
2796c94185b5
c59416b85171
48959c3a6517
52a661a327bc
494b1952c2a7
6439bac76589
93ca28221934
