% kuromasu 24 by Toshio Karino, http://www.janko.at/Raetsel/Kuromasu/024.a.htm
kuromasu
easy+
9 9
.2...6...
..3.....6
b.....5..
....4....
..2...5..
....7....
..3.....7
d.....2..
...5...4.
