% slitherlink 353 by Otto Janko, http://www.janko.at/Raetsel/Slitherlink/353.a.htm
slitherlink
medium
16 12
..12.....23...23
.3.323.22.121...
..1..2.3222.1..2
.3.3.2...203...3
..2...3.22..1...
.3.33..3.223...3
.20..3....2..33.
.22..22...2...12
...22.1..3.2....
22....2.1.2.3.23
.3..3......2...2
..3...33....1...
