% kuromasu 227 by Otto Janko, http://www.janko.at/Raetsel/Kuromasu/227.a.htm
kuromasu
very hard
24 14
...6.........7....b.....
....7......8..a......5.6
.8...6.3....a...9.......
.......6.e........jd..b.
.....84..5b.d......9.2..
..........d.......b.....
9...9.5.........7.......
.......n.........6.a...a
.....c.......9..........
..9.6......9.c7..66.....
.k..hh........5.6.......
.......a...9....b.a...h.
5.5......6..b......8....
.....8....b.........6...
