% slitherlink 364 by Otto Janko, http://www.janko.at/Raetsel/Slitherlink/364.a.htm
slitherlink
very hard
30 20
.1....3.3.32.2213..1.31.3.3...
3...2323.122.2.3.221...3021.32
.1....1....2.2....3..3.3....12
32.1....31.2...3.13.3....31...
.1....2.22.....2.1...221.11.1.
2.22..2..222121..13..23.....23
3122.22...32...2..1...1221..13
.2....2.1..123....232....12.3.
2...111..323.2.12.2....32..21.
221...3.2..2.13..22.32..2...3.
2.....21.....32.2.213..3...0..
313..1.13.3.12.2..232..222...2
2.2112.3.2...2.3...2.....3...2
0.3.........2.21...2.3.....33.
2.202..33..23..23.221.23.3.2.2
...2.22..2..21.21.2.1.2..3....
2..212..23...31......3.32.222.
121...3....2..2...3..3..2.23..
22.2..21..222.23...2.........3
..2...23.23.222.132...3.3.333.
