% hitori 444 by Otto Janko, http://www.janko.at/Raetsel/Hitori/444.a.htm
hitori
medium-
10 10
19132a6873
81311a5a67
7824267599
aa5a781488
2455687932
9579384186
66925379a4
317a898746
236395328a
46a9373652
