% slitherlink 109 by Oleg Andrushko, http://www.janko.at/Raetsel/Slitherlink/109.a.htm
slitherlink
very hard
10 10
.3..23.223
.2...1.23.
.1...2...2
22.2....22
3..2222.2.
.3.3...2.2
....1..3.2
.3.2121212
3..2.1.2..
.122..3.1.
