% slitherlink 608 by Luke Pebody, http://www.janko.at/Raetsel/Slitherlink/608.a.htm
slitherlink
very hard
19 16
.2.23....3.20.322..
23..12....1.2.1...2
.23.12..23......1.3
21.....11...3..3.12
..2112...2.3...22..
.1..3.20..2123...21
.1312...2.....312..
2......1.3.1......2
3..23.3...2.....020
13.2...32..132.....
...212..132.2.3...2
3..112.3....11.1.2.
..1.3..121.2..31.2.
32..2.1...2..2.2...
3.....2...1...23...
.2.2...22.3.2.1.3.3
