% slitherlink 679 by Luke Pebody, http://www.janko.at/Raetsel/Slitherlink/679.a.htm
slitherlink
hard-
19 16
.213......2..3....3
.........3..2...1.2
313.1.3.203..2.23.2
3..0..2...3..0.2..2
3222.22..1213.12..1
.12...13.2........3
...322.22221..2..3.
......3....32.1...3
12222..2..32.3..2.2
2....2..2.13...23..
.232..3.21.....32..
..2.3....32..11.2..
..20.1.2..22.....21
.2.....222..3.2...2
2.2.2.33..22323.31.
..33.222.221.21..2.
