% kuromasu 158 by Otto Janko, http://www.janko.at/Raetsel/Kuromasu/158.a.htm
kuromasu
medium-
13 13
........b....
9....9......4
4...3...6..3.
...6.2.76.d.2
3............
....b.5..5...
.3...a......5
..5...b......
.7.....38..83
2..9..8..4...
.4.....7..a.2
....k...i....
..8......5.5.
