% slitherlink 554 by Luke Pebody, http://www.janko.at/Raetsel/Slitherlink/554.a.htm
slitherlink
medium-
10 10
3.3.....3.
.2.2..3...
...1...2.3
.22..2....
...332.2.3
3...123.21
2.1.231..3
1.22.3.3.2
.3..1.....
..2.2.....
