% slitherlink 422 by Otto Janko, http://www.janko.at/Raetsel/Slitherlink/422.a.htm
slitherlink
medium-
10 10
3..2..2.3.
....3.32.1
3.32.31..2
....2..22.
3.1....332
13...2....
.2213....3
........2.
.2.22.1..3
323..3..3.
