% slitherlink 543 by Otto Janko, http://www.janko.at/Raetsel/Slitherlink/543.a.htm
slitherlink
medium-
10 10
.3.01..12.
2....1...3
3.03...1..
....13.2.3
.0.1..1..1
2..3..1.3.
0.0.11....
..1...33.2
0...3....2
.02..22.2.
