% slitherlink 427 by Otto Janko, http://www.janko.at/Raetsel/Slitherlink/427.a.htm
slitherlink
medium-
16 12
.3.23.222..231..
2.......3......2
.3.21.32..3....2
.....1..22.2..30
2..1..2.1321...2
3...21.....3.32.
.2322.312..31..2
22.13.131...21.2
...22...1..0.2..
1..2.3.322.2....
2.....3..23.2...
.2..3..2..2....2
