% kuromasu 121 by Otto Janko, http://www.janko.at/Raetsel/Kuromasu/121.a.htm
kuromasu
easy+
9 9
..d...8..
....a7.3.
87....7..
4...95..7
.5..5....
...6.7...
........c
3...67.5.
.2....4..
