Masyu (Deformable) by Murat Can Tonta
or solve online (using our beta test of Penpa-Edit tools; use tab to alternate between linex mode where left click+drag draws lines and right click marks X’s and a black circle shading mode)
Theme: “You’re Surrounded!”
Author/Opus: This is the 102nd puzzle from our contributing puzzlemaster Murat Can Tonta.
Rules: Standard Masyu rules. Also, some white circles may be shaded to become black circles.
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 = 3:45, Master = 5:15, Expert = 10:30
Solution: PDF
Note: Follow this link for other Masyu variations and this link for classic Masyu. If you are new to this puzzle type, here are our easiest Masyu to get started on. More Masyu puzzles can be found in The Art of Puzzles.
I stumbled my way through the first 30% or so and then it took pity on me and solved pretty smoothly from there on out.
Hi Paul, thanks for solving 🙂 Yeah, the opening steps are mostly where the difficulty is. I hope it was still enjoyable. Cheers!
Done.Nice and hard.
Recall this being very difficult for a good while. Notes say 18:38. Faving because it is just such an inaccessible-looking grid that does go places in the end.
7:07 due to a few careless mistakes. Abused a certain technique commonly found in masyu puzzles (which I shall not name here) which, interestingly, also works in deformable masyu.