% hitori 571 by Otto Janko, http://www.janko.at/Raetsel/Hitori/571.a.htm
hitori
easy+
10 10
442a717882
634a53712a
6874279161
4572671213
36a219634a
889449a737
2955136716
2127315589
37a69425a9
8a57844a76
