% slitherlink 162 by Otto Janko, http://www.janko.at/Raetsel/Slitherlink/162.a.htm
slitherlink
medium
16 12
32...232...1232.
....3.3.1.211.1.
13.2.2.2.322.3.3
..0..3.12.......
3.23..2.231.131.
21.2......12..2.
..22..2..1222...
.....12.3....22.
312...1..1.21.2.
.2.3132.....3..1
..112....1....33
.....232.3.3...2
