% slitherlink 579 by Otto Janko, http://www.janko.at/Raetsel/Slitherlink/579.a.htm
slitherlink
medium
24 14
2.2.23.3.2.02.3.2.31.3.2
2.3....1.0....1.1....1.1
...1221...2120...2212...
.0......3......0......0.
...2122...3321...2011...
2.2....2.3....3.2....1.2
2.2.11.1.1.23.1.3.22.3.3
2.2.31.3.3.20.1.2.12.1.1
0.2....3.1....0.1....2.1
...0232...2113...2123...
.3......3......3......3.
...0213...1203...3102...
3.1....1.0....1.1....3.1
2.1.20.1.2.23.3.3.31.3.1
