% slitherlink 576 by Otto Janko, http://www.janko.at/Raetsel/Slitherlink/576.a.htm
slitherlink
medium-
18 10
.0..1.20.1.2..1.3.
3.1..1....3..3..0.
.1.1..11.3...3...1
1....0..1.113..0..
..3..3...1....1..3
3..3....3...1..1..
..1..312.1..3....0
1...0...3.11..3.3.
.3..3..2....2..2.3
.0.2..1.1.33.2..2.
