% slitherlink 160 by Oleg Andrushko, http://www.janko.at/Raetsel/Slitherlink/160.a.htm
slitherlink
hard
24 14
.12..33..11..02..21..32.
2..1....1..3....3..0...1
1...1..1....1..1....3..3
.12..32..03..33..10..20.
........................
13.33..12..11..13..13.13
..1..12..32..31..22..0..
..3..21..21..11..11..2..
23.01..13..31..30..33.31
........................
.23..03..01..03..21..31.
1..2....2..0....2..3...2
1...1..2....3..2....3..2
.20..12..12..12..13..23.
