% kuromasu 88 by Otto Janko, http://www.janko.at/Raetsel/Kuromasu/088.a.htm
kuromasu
medium-
13 13
....2..54..4.
.5....a......
3...6....5..6
.4....5.58b..
.4..5..3...5.
9..7......7..
.3.........69
......7..3.4.
.2.6.c.4..4..
9...7....5..4
.............
.67...5.4..4.
....d........
