% slitherlink 167 by Otto Janko, http://www.janko.at/Raetsel/Slitherlink/167.a.htm
slitherlink
medium
16 12
3.2312....22.3.3
....23...21.212.
.22222.2.322...2
22.2..323.2.2...
..2.11...222....
23..1.212..32.23
.203.213.1....1.
..22......11..3.
.212.23..2......
..2....1322..32.
...312...1221...
.32.122.33.32...
