% slitherlink 621 by Luke Pebody, http://www.janko.at/Raetsel/Slitherlink/621.a.htm
slitherlink
easy+
10 10
...12..2.3
2.....32..
32..3.212.
2..12.3.23
11....1.0.
3...212223
1...23.2.3
...21.2.22
21.2.31..0
.2221...0.
