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: Diagonal Pairs
Author/Opus: This is the 24th 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 = 0:50, Expert = 1:40
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.
4:45 on my second attempt. (The first time I broke it really early,
but didn’t realize it until I stared for 10 minutes without making progress, only to finally start guessing and realizing I had an ambiguous finish. Then I finally found the white circle I had with no turn next to it.)
Wow ! More than 2 minutes. I can’t see how to make it faster on computer. Maybe I should train Masyu on paper to see if I can get under Expert time.
00:56
Nice theme, an easy Monday puzzle.
2:51