% slitherlink 611 by Otto Janko, http://www.janko.at/Raetsel/Slitherlink/611.a.htm
slitherlink
medium-
10 10
1..33..20.
33.0..0..3
.....3...1
31.2..3.3.
.2..3.....
.....3..2.
.3.3..1.32
3...3.....
2..2..0.31
.23..32..1
