% slitherlink 50 by Oleg Andrushko, http://www.janko.at/Raetsel/Slitherlink/050.a.htm
slitherlink
medium-
8 8
1...111.
1.1....1
.1....1.
....11.1
1.1111..
.11.....
1.111111
.1.11..1
