% slitherlink 453 by Hobbit's Room, http://www.janko.at/Raetsel/Slitherlink/453.a.htm
slitherlink
medium-
10 10
3...02...2
..31..21..
.21....22.
.3..23..0.
3..3..0..3
1..2..2..3
.2..33..3.
.30....12.
..22..31..
1...31...0
