% slitherlink 525 by Otto Janko, http://www.janko.at/Raetsel/Slitherlink/525.a.htm
slitherlink
medium
18 10
..0.12.22..232..2.
...3.....0....0.21
30...12..2.33...3.
..13........02...0
.0..13..31....1.3.
.3.1....13..32..3.
1...11........31..
.2...31.3..33...03
31.2....3.....3...
.2..131..02.21.3..
