% slitherlink 714 by Grant Fikes, http://www.janko.at/Raetsel/Slitherlink/714.a.htm
slitherlink
medium-
10 10
21..3.21..
....0....0
..12.22..1
.1..2..1..
.2..2..1..
..2..3..1.
..1..1..3.
1..12.23..
1....3....
..21.0..20
