Golden Palindromes
(Published on 23. September 2025, 03:28 by MathGuy_12)
This was set for Scojo's Setting Saturday prompt. Sotehr created this particular prompt, which was to either revisit or create a sequel for one your first puzzles.
I chose to revisit one of my oldest puzzles and see if I could use some of my original ideas to create an interesting puzzle. And I am very glad I did as this was one of my favorite first ideas, so thanks for the motivation to look at it again!
Thanks to Calvinball and NEWS for testing!
Also, I have failed to mention one of the original contributors to this puzzle, flump (No LMD page), who was instrumental in helping me flesh out some of the palindrome ideas way back in July of 2021! So a major thanks to them too :)
Rules:
- Normal sudoku rules apply.
- Clues outside the grid provide the sum of the indicated diagonal. Digits may repeat along a diagonal if allowed by other rules.
- Digits in cages sum to the value in the top left corner.
- Digits along a golden palindrome line are read the same from either direction. In addition, the central digit on the line marked by a golden circle is the same as the digit on the ends of the line.
Solution code: Row 5 left to right
Comments
yesterday, 22:15 by briansometimes
Absolutely lovely, thanks
on 26. September 2025, 16:08 by AdarshN
Like Exigus, I got quite stuck and had to step away for a while, but the logic is actually gorgeous once you see it. The fact that just these 4 cages disambiguate everything is lovely, and I was truly surprised that the math was as constrained as it ended up being. Incredible work!
on 24. September 2025, 22:47 by MathGuy_12
Added thank you to original contributor flump.
on 24. September 2025, 10:00 by Snookerfan
Brilliant puzzle! Thank you
on 24. September 2025, 05:01 by Abehar
Absolutely loved the puzzle!
on 24. September 2025, 03:26 by RedBarchetta
All clues worked so well together, bravo - excellent coloring puzzle and math!
on 23. September 2025, 19:07 by Exigus
Great puzzle. I found it quite hard and had to take a break. When I came back I found what I had been missing and it solved beautifully. Thanks!
on 23. September 2025, 10:59 by Gambit
I concur with Calvin on both points...great idea and execution. (For those that read the comments before solving, keep Zipper lines out of your mind).
on 23. September 2025, 04:26 by Calvinball
A great idea, and an even better execution. Well done!
