% kuromasu 4 by Warai Kamosika, http://www.janko.at/Raetsel/Kuromasu/004.a.htm
kuromasu
medium-
9 9
.....9...
...9...9.
9.f.a....
...6.9...
..7...3..
...5.9...
....6.6.7
.3...d...
...2.....
