% slitherlink 80 by ?, http://www.janko.at/Raetsel/Slitherlink/080.a.htm
slitherlink
medium-
10 10
..3.3..20.
3..2.1...3
.0..0....1
3.32..3...
.....3.23.
.23.2.....
...2..21.3
3....0..1.
3...3.3..3
.10..0.3..
