% slitherlink 361 by Otto Janko, http://www.janko.at/Raetsel/Slitherlink/361.a.htm
slitherlink
very hard
30 20
.3323..2.31.3.....3.3.....3.0.
12...21.21221..2..1...221.1.20
.33.1..3..31...12.3.3..11.22..
.....20.22.2..1..3.2122.3.1..3
2..2..3.2..221.30.22.3.2..2...
1....1212.11.....3....2.3.2.2.
32................1.222..2.3..
1....232.11.2.2...2.21..2....2
2.313..2...31..22.22........3.
.......2.3..223.322.....2133..
.3.32..3..2....22..2...2....22
..2..12..231.021.3.1.0...2.231
22...3..22.1.2..32..21.11.202.
...1...3....213....2....2..222
.32.3..32...3.213....311..3...
31.......1.....2.22.2...2..2..
322.....2.3.3.112...03...33...
.22312032........2.3..2....122
.3.1.32.2..2.0...3.121....22.3
.2.2.2.....3.3....31..322.....
