% slitherlink 502 by Otto Janko, http://www.janko.at/Raetsel/Slitherlink/502.a.htm
slitherlink
medium-
14 10
3.2.......232.
.21.....22022.
12.3.1.3.3.3.1
3.21.23022.3..
2222..3..2.2..
..12.3122222..
.20..3...2....
...3221.32.22.
.21..13.20....
.23223.33.202.
