% slitherlink 377 by Otto Janko, http://www.janko.at/Raetsel/Slitherlink/377.a.htm
slitherlink
medium
16 12
...2..3..222..2.
..32.2..22.23.3.
.2..3...32.....3
203...2121.212..
.232.2...1213...
......22.2.3..2.
.3..........2332
2.11322222.3....
.3..2......1...3
32..2.2.3..2.113
...3..3.1..0...3
.2..21..3.3..2..
