% slitherlink 627 by Luke Pebody, http://www.janko.at/Raetsel/Slitherlink/627.a.htm
slitherlink
very hard
19 16
.23..3...3.2...3.3.
31...0.2..1...3..32
..2...3.....22...2.
....2....222.....3.
.11....1111..2.22.2
2..322112.33.1.23..
1..21.2.1....2.12..
3..1..23.32.31.1.32
.2.2221.12.......3.
3.12.2.....02.1..22
.32.11231...0.2..2.
3...3.2.2.1..1.2...
.2.122....3....20..
32.2.1..3.0.....3.2
2..23.2..20...3....
.......22.2.2222.23
