% slitherlink 586 by Luke Pebody, http://www.janko.at/Raetsel/Slitherlink/586.a.htm
slitherlink
very hard
19 16
.33.23.132.1.3...22
.1.2.2.2....2.3122.
23..2..11......01..
.20..1..3..2......2
..2.22...1223.2..3.
.2.12..2..3.3..2121
.3.1....21...2.3..3
....3212.33.2.132..
..2.313.1.1.1...11.
13....2..1....2..2.
3.....3.....2...32.
.32132.22.21.2...0.
.2...22...222....3.
.1......2.2.2.23...
.132...22231313.1.3
3.2.3..2.1..2..2..2
