% slitherlink 413 by Otto Janko, http://www.janko.at/Raetsel/Slitherlink/413.a.htm
slitherlink
medium-
10 10
.3.21...1.
..13.2...3
.23.21....
30..32.1..
..3....32.
3...22....
3.3...3.2.
....2.22.1
.3...22122
.32.23..23
