% slitherlink 131 by Oleg Andrushko, http://www.janko.at/Raetsel/Slitherlink/131.a.htm
slitherlink
medium
18 10
0.33.33.......20.3
.2......0.3.0...2.
2.3..3...2..33...2
2..1.2.0..32...3.1
3...3..2.1..2.1.3.
.1.2.2..2.1..1...2
3.3...23..3.3.0..2
2...30..2...2..1.0
.3...3.3.0......2.
1.33.......33.23.3
