% slitherlink 184 by Otto Janko, http://www.janko.at/Raetsel/Slitherlink/184.a.htm
slitherlink
very hard
30 20
...1.3.0022..22222.2....3....3
.2.12.3.......3...212..2.02...
.2.3...1.2..31.2..2331213.322.
2...13..2..1.2...1......31...3
...2..13.21..322...2312.3..3.3
3...3..22.3.2.2222.22.22.2..1.
.12.03..31211.0...1.3..3.....2
.3.22.1...2223..3.3..122...13.
2...2.3.3.1...31....3....1....
.2.1.12.2.132......3..3.22..33
..211....3...122.3.32.2.31.2..
2..3..1.2.222.213.211.321....2
23...3...2......2.2...22.23..0
2....3..21.32.......2...2....2
.2222.1..1.2.33.2.1...1..22.23
.....3..3..2......2...2.21.2.2
...3..1..0.1..22.3.33.313.2.2.
2.22.3.2.2.222.3.3..2..23..1.3
12.2..223...233.2.2..1......1.
3332.....3..2......2...32....3
