Renrenbanban
(Published on 25. April 2023, 17:54 by DarthParadox)
Place the digits 1-9 once into each row, column, and 3x3 box. Digits must not repeat along the marked diagonal. The grey lines are palindromes and must contain the same sequence of digits in both directions along the line.
The purple lines are Double Renban lines. Each such line contains two equal-sized sets of consecutive digits. The sets might overlap partially or completely, and the digits can be in any order along the line. For example, 123123, 172839, and 142332 are each valid ways to fill a six-cell Double Renban line.
Online solver: CTC
Solution code: Row 4 then column 6, no spaces
Comments
on 12. May 2023, 18:45 by glum_hippo
I really had a great time with this one. I'm sorry to see the s%%%ping of the puzzle's rating, which I'm sure ought to be at 100%
on 12. May 2023, 14:03 by giladooshlon
WoW! that's really great setting
on 12. May 2023, 03:45 by OGRussHood
Absolutely bonkers!
on 12. May 2023, 02:52 by DarthParadox
SenatorGronk -- thank you so much for the kind words and the recommendation to CTC! That was a lovely surprise on what had previously been shaping up to be a really rough day.
simoons -- I've never been good at estimating difficulty, and I'm sure that my opinion of this puzzle's difficulty has likely been skewed by having the logic in my head for hours on end while I was constructing it. It's easy when you know all the steps already, right? :D
on 12. May 2023, 01:05 by simoons
This is an incredible puzzle (but I don't understand how you could think it is a 4/5 difficulty :D). Solved in a bit less than 100 minutes.
Thanks a lot for sharing this beauty!
on 5. May 2023, 00:16 by DarthParadox
Revised color/size of lines to make digits easier to see
on 28. April 2023, 16:27 by SenatorGronk
This puzzle was fantastic -- I figured out the first half of the break-in relatively quickly, but floundered for a while making some bad geometry-related assumptions. When everything finally clicked about the nature of the four outer lines, it came together nicely. Great job!
