% slitherlink 462 by Otto Janko, http://www.janko.at/Raetsel/Slitherlink/462.a.htm
slitherlink
medium-
10 10
.33...3.3.
1...2..0..
0...3.3..3
...2..2.2.
.3..2..0.3
0.0..3..1.
.3.2..3...
3..1.2...2
..1..3...0
.3.3...13.
