Round Trip by Ashish Kumar
or solve online (using our beta test of Penpa-Edit tools; in default linex mode: left-click+drag draws line, right click marks X on edge)
Theme: 456
Author/Opus: This is the 79th puzzle from our contributing puzzlemaster Ashish Kumar.
Rules: Draw a single loop in the grid which may cross itself orthogonally, but otherwise does not touch or retrace itself. The clue numbers to the left/right of the rows indicate the number of squares visited by the nearest section of the loop that travels horizontally in the rows. The clue numbers to the top/bottom of the columns indicate the number of squares visited by the nearest section of the loop that travels vertically in the columns.
Also, see this example:
Difficulty: 3.5 stars
Time Standards (highlight to view): Grandmaster = 3:00, Master = 5:45, Expert = 11:30
Solution: PDF; a solution video is also available here.
Note: Follow this link for other Round Trip puzzles. Some more Round Trip puzzles can be found in the book Loop Variety Collection by Ashish Kumar and Murat Can Tonta.
Going to try again this afternoon, “almost” solved 2 times, until I realized that, 4 4 vf n genc!
First time I’ve cleared the expert standard!
I was having the same issue! It took me like five times until I realized what I had been doing wrong.
And the threading didn’t work again. That was supposed to be in reply to R.
Yep same here, fell for the 4,4 clue. But fortunately realised it eventually!
6:54.Really nice puzzle and solve and happy with my time !