% kuromasu 18 by Grant Fikes, http://www.janko.at/Raetsel/Kuromasu/018.a.htm
kuromasu
medium
11 11
...3.......
.5.......4.
.....3..b..
8....7.....
....7......
..39...3b..
......7....
.....3....4
..7..8.....
.5.......5.
.......3...
