% slitherlink 595 by Otto Janko, http://www.janko.at/Raetsel/Slitherlink/595.a.htm
slitherlink
medium-
18 10
.2..3..0.1.2.3.2.3
2.3.3.31.2..2..21.
2......1..2..2...1
.3.3..0...02...2..
.2..31..03..0.3..3
1..2.0..23..12..2.
..0...33...3..2.1.
3...1..2..0......3
.23..1..3.22.3.3.3
1.0.3.3.3.2..3..1.
