% slitherlink 574 by Otto Janko, http://www.janko.at/Raetsel/Slitherlink/574.a.htm
slitherlink
medium-
10 10
11.2101.13
..3....2..
2.1.31.2.1
2.2....3.2
.3..32..2.
..0....3..
3.2.23.2.3
..3....3..
33.2223.23
...2..3...
