% slitherlink 497 by Hobbit's Room, http://www.janko.at/Raetsel/Slitherlink/497.a.htm
slitherlink
medium-
10 10
..1.2...2.
22..0.1.3.
...2..1..0
.13....0..
1..1.3...2
2...3.2..1
..1....31.
3..3..2...
.0.1.0..20
.1...1.1..
