% hitori 280 by Otto Janko, http://www.janko.at/Raetsel/Hitori/280.a.htm
hitori
medium
12 12
97b53a712116
a84427c67c93
3a545651bbc2
228b18629ca4
6c79435417b1
1b5bac376121
59b7c74b5315
b218543a5167
57c3482926cb
73624137b47a
842c64938a5b
25a9892c3449
