YZF_Sudoku

Programs which generate, solve, and analyze Sudoku puzzles

Re: YZF_Sudoku

Postby smb3smb » Sun Aug 11, 2024 10:05 am

Hello! Congrats for the program, I think it is the best Sudoku program, at least for now. I have a suggestion: a version of the program that inhibits all functions for automatic/computer solving. I mean the user to be able to solve the puzzle by himself, without help from computer. That would be very useful for organizing Sudoku solving contests. Thank you!
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Re: YZF_Sudoku

Postby yzfwsf » Sun Sep 22, 2024 8:44 pm

I found that the solver can be run on Android devices through https://github.com/brunodev85/winlator.
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Re: YZF_Sudoku

Postby StrmCkr » Wed Sep 25, 2024 2:07 am

That's intresting
Some do, some teach, the rest look it up.
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Re: YZF_Sudoku

Postby yzfwsf » Tue Oct 15, 2024 1:15 pm

Released version 630, may fix the bug of fake death when running in wine, partially modified the GUI to run on small-screen Android devices using winlator, and added a new type of Blossom Loop (AALS). If you want to have a better experience on a small screen, you can try to start the mobile mode in the tool menu. The next version plans to add AHS-XZ technique, and also wants to add AUR, AHS and other strong links to AIC, and separate AIC containing AHS, AUR, AFW, Almost Fish and other strong links into Complex AIC technique.

https://drive.google.com/file/d/16Lmbgm19swCC2z9TvwLXZ_-5ga9-Fsda/view?usp=drive_link
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Re: YZF_Sudoku

Postby claudiarabia » Tue Mar 04, 2025 10:11 am

Hi,

after a twelve year absence from this forum - at first, thank you for providing this tool. :-) I had been working with Nicolas Juillerat's explainer for long, but since it was on Java Script only I was to dumb to download it with my old PC. Today I experienced another failure when I tried anew.

Now I downloaded your program, and I used this site https://www.7-zip.org/download.html . I downloaded "Download .msi 64-bit x64 7-Zip for 64-bit Windows x64". I will open the .msi-file when I'm home again and not at work, then I'll tell you more.

Edit: I couldn't open the program.

  1. Has this 7-zip.org even any connection with the YZF_Sudoku program?
  2. Or Filezilla? What is that?
I hate it when I want to download something and then suddenly there are other things in package I never wanted and the thing I want I can't reach.

Please help me. :?:
Last edited by claudiarabia on Tue Mar 04, 2025 7:16 pm, edited 1 time in total.
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Re: YZF_Sudoku

Postby StrmCkr » Tue Mar 04, 2025 6:05 pm

https://drive.google.com/drive/folders/1uk4CCzW2fabLCawCwpwsQga2LtniXLQo

last file on the page, (629c3.7)
extra to a folder and run the yzf_Sudoku application
Some do, some teach, the rest look it up.
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Re: YZF_Sudoku

Postby claudiarabia » Tue Mar 04, 2025 7:13 pm

Thank you very much - that was the missing link. I still don't know if my 7-zip.org download before was necessary, but now it works: :D

Image
1....5..4.9..6..3...7...2..2.........8..5..9.........6..1...7...6..3..8.4..2....1

So happy to design and to learn more about sudokus again. :)
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Re: YZF_Sudoku

Postby m_b_metcalf » Wed Mar 05, 2025 2:30 pm

claudiarabia wrote:So happy to design and to learn more about sudokus again. :)

Dear claudiarabia,

Welcome back but, as you may have noticed, there is little activity here compared with 12 years ago. Your new pattern is a subset of that of Patterns Game 145. Here is a medium diamond, easier than your harder pearl:

Code: Select all
 1 . . . . 2 . . 3
 . 4 . . 5 . . 6 .
 . . 7 . . . 1 . .
 6 . . . . . . . .
 . 2 . . 8 . . 4 .
 . . . . . . . . 9
 . . 3 . . . 8 . .
 . 5 . . 6 . . 2 .
 8 . . 5 . . . . 7


Regards,

Mike
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Re: YZF_Sudoku

Postby StrmCkr » Thu Mar 06, 2025 2:34 am

Dear claudiarabia, welcome back :)

reddit sudoku community is picking up and doing well in the last year I've increased it from 10k users to 34k :)
i redirect lots of people to this old board for information :) check it out when you have time

yzfs software is pretty epic :)
Some do, some teach, the rest look it up.
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Re: YZF_Sudoku

Postby yzfwsf » Tue Oct 14, 2025 4:12 am

Added puzzle-solving technology AHS-XZ, and enhanced the marking function when manually solving puzzles, so a small updated version was released.

Code: Select all
https://drive.google.com/file/d/1ed25iysEltn7kGsfpW02TqOpfygPMqnS/view?usp=drive_link
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Re: YZF_Sudoku

Postby champagne » Tue Dec 23, 2025 9:35 am

Hi yzfwsf,

I left long ago the solving technics, but I was curious to see how many new things are now available.

I downloaded your last version and tried first with full success a skfr 11.0 recent puzzle with exocet.

I then waanted to see how "Golden Nugget" is solve to-day.
I am not sure that I used the code properly, but I faced "insane" then a brute force step.

Is it still out of the solving potential of your code ??

I posted years ago a long solution built with "abi". It was a long path, but without brute force.
my website is dead, but I still have the sources. I'll try to dig in it to see how it was solved (2008)
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Re: YZF_Sudoku

Postby yzfwsf » Wed Dec 24, 2025 2:28 pm

Hi champagne,
My program mainly introduces three technologies developed by forum members after you left: Fireworks, Wear Exocet, and Trivalue Oddagon. Other techniques were already possessed by the forum before you left. Since my solver does not introduce nested dynamic chains, at present, if there is no special structure for high difficulty puzzles, brute force is needed to solve them. I have seen Abi on the forum, but I have never understood its principle, so I did not implement it in my solver. Hope you can introduce it in depth, thank you.
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Re: YZF_Sudoku

Postby champagne » Wed Dec 24, 2025 4:31 pm

HI yzf_wsf,

No problem, you did a fantastic jocb and keeping horrible nested chains out of the scope was a good decision.


"abi", as "ttt" / "totuan", "eleven" ... had no limit in the ways to attack a puzzle.

She contributed heavily to the understanding of the exocet properties and what you call
Check X-Rule:r1c7<>7
is in fact the "abi" loop revisited by David to write the JE compendium.

I have currently heavy indirect health problems, but I'll try in the next days to dig in the path to rebuild the golden nugget full path.

Happy Christmas and enjoy this end of year
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Re: YZF_Sudoku

Postby yzfwsf » Wed Dec 24, 2025 11:25 pm

Hi champagne,
Wishing you good health and a Merry Christmas.
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