% slitherlink 429 by Otto Janko, http://www.janko.at/Raetsel/Slitherlink/429.a.htm
slitherlink
very hard
30 20
3.1.....2.2.2..........2222...
....231.213..202...32.3......2
2.3.3.23..21.2.3.13.1.2.322..1
2...2.2...3..12....332.2.22.3.
212.....2.2.2...1.....1..2..2.
.312.1.2.113..23.2..1..1222...
1....3....2...3.......32.2..1.
.22....12..3....32.3...1.0.3..
..2..3.2321.1.3..2.2.22.3.3..3
3..2.3.31..3.3.21.322132.1.2..
.1......1.3...222...22...2..3.
.1..1.2..220..31...2.2.32..21.
3.3..3.1....13.322.3.2.112..32
2.3..132.2..2.12.32.22.322..11
.312.....1....1....3132..3.3..
1..3.32..2.1.2332....2.2.2....
...1..2...33.1.1.22..3.2...3..
3..2..0.1..1.2232.3...12..12.3
31.1..221.33...2...1232.21.222
222.32........3....2.3.3.2....
