Slitherlink (Unequal Lengths) by Murat Can Tonta
or solve online (using our beta test of Penpa-Edit tools in edgex mode where left click+drag draws lines and right click marks X’s)
Theme: Empty Middle
Author/Opus: This is the 231st puzzle from our contributing puzzlemaster Murat Can Tonta.
Rules: Standard Slitherlink rules, but any two consecutive line segments cannot have the same length (i.e., on both sides of any turn, the loop must travel different lengths).
Difficulty: 3 stars
Time Standards (highlight to view): Grandmaster = 2:30, Master = 5:00, Expert = 10:00
Solution: PDF and solving video.
Note: Follow this link for classic Slitherlink and this link for Slitherlink variations. If you are new to this puzzle type, here are our easiest Slitherlink puzzles to get started on. More Slitherlink puzzles can be found in The Art of Puzzles, Slitherlink and Variations, and our beginner-friendly book Logic Puzzles 101.
Fun puzzle!
Upper right tripped me up, though.