Masyu by Tom Collyer
or solve online (using our beta test of Penpa-Edit tools in linex mode where left click+drag draws lines and right click marks X’s)
Theme: Antisymmetry
Author/Opus: This is the 23rd puzzle from our contributing puzzlemaster Tom Collyer.
Rules: Standard Masyu rules.
Answer String: Enter the length in cells of the horizontal loop segments from left to right in the marked rows, starting at the top. If the loop only has vertical segments in the marked row, enter 0. Separate each row’s entry with a comma.
Time Standards (highlight to view): Grandmaster = 0:40, Master = 1:00, Expert = 2:00
Solution: PDF
Note: Follow this link for other classic Masyu. If you are new to this puzzle type, here are our easiest Masyu to get started on.
3:38
By the way, nice to see a Tom Collyer puzzle again. It’ll be nice to have him back in the mix.
(Not that the other authors haven’t been great, of course…)
Thanks for the comment – I hope to be contributing a few more puzzles than I have been this year!