% kuromasu 2 by Warai Kamosika, http://www.janko.at/Raetsel/Kuromasu/002.a.htm
kuromasu
easy+
9 9
.2...6.b.
..9......
.5..a.3.4
4......7.
...8.9...
.4......4
2.b.9..7.
......4..
.5.4...4.
