### Masyu (Deformable) by Murat Can Tonta

PDF

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: Antisymmetry

Author/Opus: This is the 18th puzzle from guest contributor Murat Can Tonta.

Rules: Variation of Masyu rules. In addition to the standard rules, 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 = 2:30, Master = 3:30, Expert = 7:00

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.

• Neelix says:

I find it very frustrating not to be able to trust white circles to actually be white, and yet somehow at the same time I find the challenge level of these puzzles just hits that perfect sweet spot. Go figure. 🙂

– Neelix

• Carl W says:

I have a similar feeling. This is the first Deformable Masyu I’ve actually attempted. I had seen that there were a couple published during 2014 so those are on my list to attempt at some point. But when I saw them previously they looked really intimidating.

So I approached this expecting some frustration, but instead was rewarded with a very satisfying puzzle. Thanks, Murat!

• Murat says:

I’m glad both of you enjoyed it! Thanks Carl, I feel special 😀

• Jonah says:

I thought the instructions were a prank at first, because the first half of my solve didn’t involve shading any white circles at all. Was that a hidden logical theme? I like it.

• Murat says:

🙂 kind of. I did entertain the idea of making a deformable masyu where nothing ends up changing. This one doesn’t take it to the extreme and while few actually changes color, it is that possibility that makes up part of the challenge.

• skynet says:

13:25.I too thought that this would be a normal masyu puzzle….Bayl 2 bs gur pvepyrf punatrq pbybhe

• Neelix says:

gjb? V pbhag guerr.

– Neelix

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