% slitherlink 546 by Otto Janko, http://www.janko.at/Raetsel/Slitherlink/546.a.htm
slitherlink
medium-
10 10
...1..200.
30.32...1.
2..2.2....
2...3..003
..2...0.1.
.1.2...3..
223..1...1
....0.0..3
.1...32.31
.331..2...
