% slitherlink 597 by Otto Janko, http://www.janko.at/Raetsel/Slitherlink/597.a.htm
slitherlink
medium
24 14
0.312.3.3..2.1..2.12..13
2......2..3..0.3.3..03..
.1.3.3...2.0.3..2......2
....2.3.2.3.......031.3.
.3.......3...333.......2
.3.032....13.....3.3..3.
.1.....320..22....3.2...
...2.1....13..020.....0.
.3..3.3.....23....102.3.
2.......201...3.......1.
.1.201.......0.2.3.2....
1......3..3.1.3...3.3.3.
..23..2.0.1..2..1......2
22..23.3..3.1..3.3.131.1
