% kuromasu 251 by Otto Janko, http://www.janko.at/Raetsel/Kuromasu/251.a.htm
kuromasu
medium-
10 10
.8........
....d....5
5........6
..9.......
5..3.....7
7.....9..6
.......8..
4........c
6....3....
........8.
