% kuromasu 234 by Mokuani, http://www.janko.at/Raetsel/Kuromasu/234.a.htm
kuromasu
easy+
9 9
.3...2..2
...5.....
3........
..3..5..5
.a.....4.
3..4..6..
........6
.....7...
3..3...3.
