% slitherlink 724 by Otto Janko, http://www.janko.at/Raetsel/Slitherlink/724.a.htm
slitherlink
medium
12 12
.1.3.33233.1
..2........1
3..2..2..3..
3....3...32.
1..3.2..22..
2.2.........
.........1.3
..32..3.3..1
.32...0....0
..2..3..3..2
1........3..
2.31232.2.1.
