% hitori 494 by Otto Janko, http://www.janko.at/Raetsel/Hitori/494.a.htm
hitori
easy+
10 10
7522657136
a491893735
271998a874
3534527964
38765a928a
1139735987
5384141a95
1795692876
6852428319
92887a1159
