% slitherlink 552 by Luke Pebody, http://www.janko.at/Raetsel/Slitherlink/552.a.htm
slitherlink
medium-
10 10
..3.33332.
2221...21.
2..2....1.
...1....1.
33....22..
..221231.2
.3.2.2.1..
2.2221...2
...232...2
.1..2.33.3
