Fifth Wheel
(Published on 27. February 2025, 14:27 by IcyFruit)
Normal sudoku rules apply.
Along a line, each set of 3 adjacent digits sums to a multiple of 5.
Solution code: Row 8
Comments
on 6. May 2025, 21:13 by Agent
Cool puzzle, smooth solve once you have the right mindset!
on 6. March 2025, 17:19 by glum_hippo
No bifurcation for me, but I did have to have some crib notes at my side. Really elegant!
You can put me in the "4 stars" camp, but 5 seems fair too.
on 4. March 2025, 12:26 by DVFrank
Beautifully set! :^)
on 1. March 2025, 23:40 by Fool on Hill
Yet another economical grid with a beautiful solve. Mathematicians may find this easier than others, because they may get the implications of the rules more quickly.
on 1. March 2025, 18:31 by Mennoo_
I love this kind of puzzle where the logic in the end is not that difficult, once you got the right mindset on it. But finding the right mindset is the most challenging part actually.
Brilliant puzzle! Loved that
on 1. March 2025, 12:44 by Visumation
Very nice. But I found it very hard as well. I for sure went all in with my “aide memoirs” as well. Thanks for sharing this gem.
on 1. March 2025, 05:21 by henrypijames
@TrivialHomology:
I don't think that "minor bifurcation" you speak of is avoidable. I employed some "aide memoir" in the empty parts of the grid to help resolve this (and other) step, but but where does aide memoir end and bifurcation start?
on 28. February 2025, 21:34 by Silverscree
I had to stare at this for over an hour (admittedly distracted doing other things too) before I started to make any meaningful progress, but once you ask the right question it flows beautifully. There was one other sticking point (where my notation had to undergo a regime change), and I either made a wrong deduction or I got my pencil marks backwards at one point which needed a fix, but if you take it slow and steady I think this is achieveable.
on 28. February 2025, 14:38 by henrypijames
No way this is only 3 difficulty - 3⅔ for me, and the LMD average will surely be 4 if not 5.
on 28. February 2025, 04:11 by applesauce
Absolutely stunning. Fresh logic put to extraordinary use. Several moments of pure joy in my solve. Thank you!
on 27. February 2025, 21:46 by mihel111
Brilliant. A bit closer to 4* than 3* for me.
Very well done.
