% slitherlink 405 by Otto Janko, http://www.janko.at/Raetsel/Slitherlink/405.a.htm
slitherlink
medium-
10 10
.2222.2...
2...2.3.22
2.33..13..
...1...22.
.22212..2.
.1.3....2.
...12.1.22
1.22.32..3
3.3..2..2.
.2....33.3
