% slitherlink 671 by Luke Pebody, http://www.janko.at/Raetsel/Slitherlink/671.a.htm
slitherlink
medium-
10 10
.2.1..1..3
2132...3.2
222..2...2
2..32.2.3.
12...2.12.
..20.2....
23.....02.
2....22...
..3.23.3..
3.3...3.1.
