% kuromasu 68 by Otto Janko, http://www.janko.at/Raetsel/Kuromasu/068.a.htm
kuromasu
medium-
13 13
3.7.6.6...3..
.....c.....3.
...6.3...6..7
......7......
.6..67.67..49
4..5.....4...
..9....6.....
.8....7...8..
..77.d...c..8
...a....87.7.
6............
.i......hg...
3...645...7.7
