% slitherlink 371 by Otto Janko, http://www.janko.at/Raetsel/Slitherlink/371.a.htm
slitherlink
medium-
10 10
...3..22.3
31.22....2
3.22.2.3.2
..23.33.22
...31.2.23
.322....1.
31....22.3
2...1.1.3.
.22..321..
...2...3.3
