Slitherlink (Liar) by Thomas Snyder
or solve online (using our beta test of Penpa-Edit tools; use tab to switch between edgex mode where left click+drag draws lines and right click marks X’s, and a shading and number entry mode to mark/update the liar clues.)
Theme: Bull’s-Eye
Author/Opus: This is the 419th puzzle from Thomas Snyder, aka Dr. Sudoku.
Rules: Variation of Slitherlink rules. Exactly one clue in each row and column is incorrect and must represent another number.
Difficulty: 4.5 stars
Time Standards (highlight to view): Grandmaster = 8:45, Master = 13:30, Expert = 27:00
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.
Brilliant puzzle. It took me 35 minutes but it was worth to sacrifize this time to have this pleasure in looking for 11 liers. I marked every of them red, having satisfaction every time when I discovered one of this fooling clues
Wow, this one felt very satisfying to solve! Great use of the ruleset, I had to use a lot of different application of those rules to reach the end, but never got stumped anywhere. Very smooth solve overall, this was my favorite puzzle this month.