% slitherlink 466 by Otto Janko, http://www.janko.at/Raetsel/Slitherlink/466.a.htm
slitherlink
medium-
18 10
31.1.1..33.10....3
..3....3.....202.1
1.0..31.0..01...0.
..221.0...3...3.1.
.1.....3.3..3.1..2
3..3.1..2.1.....3.
.2.0...0...2.013..
.1...13..1.33..2.1
1.032.....2....0..
1....31.12..2.3.33
