% slitherlink 536 by Otto Janko, http://www.janko.at/Raetsel/Slitherlink/536.a.htm
slitherlink
unknown
10 10
.3.....33.
1..230.0.2
20..21....
.....2..2.
.232...01.
.01...022.
.2..3.....
....12..33
0.3.120..2
.01.....3.
