% hitori 454 by Otto Janko, http://www.janko.at/Raetsel/Hitori/454.a.htm
hitori
medium-
10 10
1534a42821
9495632319
68a1a59747
9349797612
2aa9328751
32911a7568
aa62521887
565a687914
99194a523a
597481a233
