% slitherlink 414 by Otto Janko, http://www.janko.at/Raetsel/Slitherlink/414.a.htm
slitherlink
medium-
10 10
.221.21...
.2.3.33..3
..2...2.1.
.2..3..3.3
.....3..1.
2..3.1.3.3
3.1..2....
23..2.32.2
..2.22.113
.3..31.2..
