% hitori 237 by Otto Janko, http://www.janko.at/Raetsel/Hitori/237.a.htm
hitori
hard-
17 17
376ef9h1134489de2
7h15e18e6gfab421c
41gh4fa62bcbedc8e
fbf2cfdeh84h13693
ecf6425759b8a4ebg
5f6cd26be19c7a4eb
dfb8e6dha51c93f4h
h4fe8b15a773d692d
c24ha47c9632e5b5e
h92ehd38c4dgef745
68gddaabdchb425f9
ag7922b35f8a3he17
b63c18aea7ae55dch
3214hg9cbfd5hee74
231153c96ehd9b8a4
fe5fbh727c193ag6d
46d39b2c4bg6f17h3
