% hitori 220 by Otto Janko, http://www.janko.at/Raetsel/Hitori/220.a.htm
hitori
medium-
10 10
558376a843
823a639619
1693861a83
4886a93478
2472851831
7645386578
59271a8386
37a5282154
6835215492
935155862a
