Saturnalia
(Published on 13. January 2024, 05:19 by mathpesto)
This puzzle was created as a secret santa gift for Bill Murphy.
Rules:
Normal sudoku rules apply within each 9x9 grid. From left to right, top to bottom, the following lines have the following properties:
- Whisper (green): Adjacent digits on a whisper differ by 5 or more.
- Between (dark gray): Digits on a between line are between the values in the circled ends.
- Ten Line (light gray): A ten line consists of one or more contiguous groups of cells, each of which sums to 10. Groups cannot overlap.
- Parity (red): Adjacent digits on a parity line alternate between odd/even parity.
- Region Sum (blue): Digits on a region sum line have the same sum in each 3x3 box the line is in. If a line passes through a box multiple times, each individual segment sums separately.
- Entropy (gold): Every set of three sequential digits on an entropic line contains one digit from {1,2,3}, one from {4,5,6}, and one from {7,8,9}.
- Thermo (gray): Digits along a thermo increase from the bulb to the end.
- Arrow (gray): Digits along an arrow sum to the digit in the arrow’s circle.
- Renban (purple): A renban contains a set of consecutive digits (not necessarily in order).
(Note: The parts of lines in between grids are ignored. For example, R9C5 of Grid 1 and R1C5 of Grid 4 are considered adjacent and therefore will have opposite parity.)
Solve online:
Solution code: Left to right, top to bottom, the digit in R1C1 of each grid. (i.e. R1C1 in the top left grid, R1C1 in the top middle grid, etc.)
Comments
on 6. September 2024, 12:48 by oyyq99999
DNF'ed first attempt at around 460 mins and finished in another 697 mins from scratch with a few Check button click and rewinds...
didn't feel very hard for 85% of the puzzle but the last bit was a pain for me.
on 19. August 2024, 17:48 by isajo4002
When do we get the pencil puzzle version?
on 14. August 2024, 22:06 by Chad
Crazy puzzle that did not disappoint.
Very impressive setting!
Solve in about 5.5 hours and enjoyed every minute of it!
on 29. July 2024, 08:05 by benzonitrile
Absolutely stunning. Loved every bit of this.
on 13. June 2024, 13:19 by Smoncko
455 minutes, but I loved every moment of it.
on 8. March 2024, 11:02 by NEWS
It took me a total of half a day to complete this puzzle, though I did not do this without any pauses.
on 17. February 2024, 15:54 by hajuyi1020
a very complex, wonderful and time-consuming sudoku
on 30. January 2024, 18:43 by dtoto
Absolutely amazing. One tiny false assumption mucked up my first go but it was a great reward sticking with it. Thanks mathpesto!!
on 25. January 2024, 08:25 by wpolly
7 hours of an enjoyable mind marathon. I cannot imagine the work needed in setting up such a puzzle.
on 21. January 2024, 12:19 by Sanger54
Loved that. Now to reunite with my family after ignoring them for a few days.
on 15. January 2024, 17:43 by h5663454
Until the solution code was submitted, I spent 8.45 hours on this puzzle... Of course, this was all done in the fragmented time of these few days...
And...actually I'm not really done yet. But to be honest, this is really, really, really an extremely painful protracted battle...
I'll leave another comment once I've completely finished this puzzle...
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...9.6 hours...I finally finished it...
on 14. January 2024, 18:14 by mathpesto
Added penpa+ links and adjusted difficulty
on 14. January 2024, 07:25 by by81996672
The puzzle itself is not very difficult, I think it's about three stars. It just took a long time, and I took four hours to solve it slowly. Although the problem-solving process is relatively easy, I think the setup process should be time-consuming. Thank you for your puzzle.
on 14. January 2024, 04:44 by h5663454
Just like Myxo and KNT said, I also think penpa is a better tool.
The grid of this size is not suitable for using CTC to solving this solving, because the display interface is too unfriendly for both mobile phone users and computer users. And there is another reason... it may not load the previous solution records correctly...
…When I reopened the CTC page today, I found that all the solution records from last night had been cleared. (I did not clear the browser cache and browsing history during this period.)
I don’t know if it’s because the grid is too large(29*29!!!) and CTC can’t save the solution records normally.
I don't know if this has happened to anyone. But to be honest, due to problems caused by inappropriate tools, the entire process fell short, which was definitely a huge blow to the solvers.
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@h5663454
Apologies that the sudokupad ended up clearing the solution records from you. When I added initially tried adding a penpa+ links here, it wouldn't load properly. To any other solvers as well, I think it should be resolved now though, as a well as a backup link.
-Math Pesto
on 13. January 2024, 21:43 by halakani
The difficulty should be lower than 5 stars. It takes a looong time as you can imagine.
on 13. January 2024, 20:30 by KNT
I second the comment by @Myxo, a penpa link for zoom would be most appreciated.
on 13. January 2024, 14:31 by Myxo
Do you mind providing a penpa link? I would love to solve this, but the lack of zooming in Sudokupad makes it very challenging :D
on 13. January 2024, 10:18 by Playmaker6174
What a long and consistently entertaining journey! Hats off to you for creating such a delightful gargantuan gift, I’m pretty sure Bill would enjoy this gift greatly (though that would also take him quite a long time)
