Slitherlink by Tom Collyer
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: Plaid
Author/Opus: This is the 44th puzzle from our contributing puzzlemaster Tom Collyer.
Rules: Standard Slitherlink rules.
Difficulty: 2 stars
Time Standards (highlight to view): Grandmaster = 1:00, Master = 1:30, Expert = 3:00
Solution: PDF
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.
2.32 mins to solve this one. 3 coming with two 1s around it is learning from this puzzle.