% slitherlink 550 by Otto Janko, http://www.janko.at/Raetsel/Slitherlink/550.a.htm
slitherlink
medium-
10 10
23.32.2..0
...0..1..1
...0.3....
23.....003
..3.33...2
1...11.1..
130.....22
....2.3...
2..2..2...
2..3.22.33
