Masyu by Prasanna Seshadri
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: Almost Twisted (Bonus: for an easier puzzle you can make the white circle in R9C6 black and try the fully antisymmetric form.)
Author/Opus: This is the 10th puzzle from our contributing puzzlemaster Prasanna Seshadri.
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 = 1:45, Master = 3:00, Expert = 6:00
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.
I don’t know how I feel about this puzzle. I ended up abusing uniqueness on the top quite a bit.
I think the top can be determined after a certain point without guessing or abusing uniqueness if you count ends (I think there were ten ends that could not support an eleventh, but I might be remembering wrong).
I think the key part is figuring out the bottom on how to avoid not creating any loops there. The top is then a bit of an afterthought after figuring that out. Definitely no need to count to 11 ends.
8 mins
Thomas, are you sure the answer for this one is keyed in correctly? I’m sure I have the right answer but it keeps telling me that my answer is incorrect.
I could e-mail you my solution if necessary; I’m sure it’s the only one and all… thanks.
About 50 people have submitted the answer I’m expecting, but I’d be glad to look at your image and see if it is just a problem with our formatting or something else.