% slitherlink 373 by Otto Janko, http://www.janko.at/Raetsel/Slitherlink/373.a.htm
slitherlink
medium-
10 10
3..2......
.3.32..3..
2.2222..1.
3...3.332.
3..2.1..1.
.2.2.13.3.
32.2.....1
..21.11.2.
3.323.33..
...32.22.3
