% slitherlink 363 by Otto Janko, http://www.janko.at/Raetsel/Slitherlink/363.a.htm
slitherlink
very hard
30 20
.....1....33.23...3.32.3..3..2
.32.33.33.2.12...2.......3..3.
2..3.20.1.1...2.2.2.....2.11..
3....31.2...0...1..3.020.3..3.
.0.2...31.132..2.1.2...1110.13
233122..1222..3.3.3...12.12..2
.2.......2...2..3..3.22......2
..22213.22...23..........1.2.2
312.....1.2....3.2..3....2.3.2
2.2.122.01..22.1..21..22..2.22
.1.22.2.2.31...3...2.22.22.131
...2..22..32.1..2......322..32
.....3...3..2.2.223121.2..222.
..31.223..2.13...2..3...322..3
.23..1....2..2.212..1.2..2....
..2..1..31.0.2.2...2.13.3223..
23....2.2.2..231323.1..1...22.
.2312.3.1..32.2.3.1.1..2.232.3
2..2.....30..332..3.22.1213.2.
.3..222..2.3.2.2...223.3.....3
