% slitherlink 412 by Otto Janko, http://www.janko.at/Raetsel/Slitherlink/412.a.htm
slitherlink
medium-
10 10
3.3.2.12..
...2232.12
.2.2.3.12.
.2..2.3..2
.22..212.3
....2..2..
..22...2.2
.2......22
.32..3.32.
223.3.2..3
