% slitherlink 408 by Otto Janko, http://www.janko.at/Raetsel/Slitherlink/408.a.htm
slitherlink
medium-
10 10
..23222...
.......3.3
..31..22.2
....2.22..
...12.2.3.
..23.2.1..
..3.2....2
.2.102..3.
..23.22..1
3....2333.
