% slitherlink 411 by Otto Janko, http://www.janko.at/Raetsel/Slitherlink/411.a.htm
slitherlink
medium-
10 10
.23.2.....
.1..1.32..
2231...22.
.2..213..3
2.3.3...22
...12.3..3
2.3.22.3.3
3.1122231.
2.332.....
....12.3..
