% slitherlink 425 by Otto Janko, http://www.janko.at/Raetsel/Slitherlink/425.a.htm
slitherlink
medium-
14 10
2.122...33...3
2..2.2..1...2.
22.221..2.2..3
3....3.323...3
3.3..2.3.2..23
.3.3..2.......
..2..21..23...
..2..2.31...3.
23..0....23...
..1.232...233.
