% slitherlink 137 by Oleg Andrushko, http://www.janko.at/Raetsel/Slitherlink/137.a.htm
slitherlink
medium
18 10
112.321..11..022.3
.......11...2....2
3.....1..203..02.0
2.13.3..2...0.2...
1..2.0.2.3..2.....
.....3..1.1.3.3..3
...1.2...1..1.13.2
2.12..202..2.....3
3....2...33.......
3.121..22..312.223
