% hitori 509 by Otto Janko, http://www.janko.at/Raetsel/Hitori/509.a.htm
hitori
medium
12 12
58511324ca91
6928a12437b9
497aab1b5c63
b4a825c3687c
83798c6cb5aa
13759ac845c2
82c96959c384
c253c695a187
21b948976985
9367c4ab2a3b
9a9972351c23
7b3279416a56
