% slitherlink 610 by Luke Pebody, http://www.janko.at/Raetsel/Slitherlink/610.a.htm
slitherlink
very hard
19 16
2.22.2.....3..3....
..3..13..312..1.112
.1.1.2.3..1.322.23.
3.3.1......1....0.2
.....2.233..32.3.33
1...22.22.120.22.1.
...1232...2..2...13
31..31.3..0..1..21.
2.2.....2..32220...
0..22.2321.1....3..
..2.2..2.23.23.22..
3..2.222.13....3.21
2..2..1....13..1..2
1...2.130.1.2.2..12
2221.3..2.2.2.32212
......23....3.2....
