% slitherlink 236 by Oleg Andrushko, http://www.janko.at/Raetsel/Slitherlink/236.a.htm
slitherlink
very hard
36 20
.313....311...31.01.33...221....333.
0...0..0...1.3...13...1.1...2..2...2
1...2..1...2.3........3.3...2..3...1
.332....022...12.20.21...102....311.
.....01.....3..........0.....01.....
.010....130...12.33.31...132....313.
3...1..2...1.3...11...1.1...3..3...1
1.1.1..0.3.1.2.3.13.0.3.3.3.0..1.2.3
....................................
.1.3.0.2.1.3..223..211.2.1.3.0.1.1.3
3.0.3.3.3.0.0.201..011..3.3.3.3.3.3.
....................................
1.3.2..1.0.1.1.3.22.3.2.2.1.0..3.3.0
2...0..3...3.3...10...3.0...2..1...2
.323....113...12.21.32...111....122.
.....01.....0..........1.....31.....
.311....312...02.21.13...332....333.
0...3..1...0.2........0.1...3..1...1
1...0..2...2.2...21...1.3...3..2...0
.233....212...12.31.20...221....213.
