% slitherlink 594 by Otto Janko, http://www.janko.at/Raetsel/Slitherlink/594.a.htm
slitherlink
medium-
18 10
102..23.232..20.11
....3.1...........
2.1.1..3.0...1.1.3
3..3.3..2..33.1..1
.0....1.0.1..2.3..
..1.2..3.1.3....1.
0..3.32..3..3.1..3
2.0.2...1.3..2.3.3
...........0.2....
33.20..331.13..220
