DxSudoku’s SECRET Strategy To Solve ANY Extreme Sudoku! YouTube Collaboration
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- Опубліковано 26 чер 2024
- In DxSudoku’s Secret Strategy To Solve ANY Extreme Sudoku - UA-cam Collaboration by Smart Hobbies, I invited David Peru of @DxSudoku to show you how to solve extremely difficult Sudoku puzzles using his secret strategy. DxSudoku created an amazing Sudoku technique called Alternate Inference Chains With Extensions, or AIC With Extensions, that can solve the most difficult Sudoku puzzles. In this video, he applies AIC With Extensions to solve an extreme Sudoku given to me by Julian Locke. Thank you David Peru of DxSudoku for this collaboration.
David used the software program Hodoku for this solving video. Learn how to load this puzzle into Hodoku to solve it like David did in this tutorial: • How To QUICKLY Become ...
Here is CTC puzzle link if you want to try solving this puzzle on your own on desktop or mobile:
tinyurl.com/yc6ner56
Check out David Peru’s DxSudoku UA-cam channel here: / @dxsudokuchannel
You can buy David’s books here: dxsudoku.com/books
Watch DxSudoku AIC with Extensions Tutorial here: • dxSudoku #107 Improved...
Learn more about links and chaining here: hodoku.sourceforge.net/en/tec...
This video is part of my Sudoku Collaborations series on my UA-cam channel, Smart Hobbies. The goal of this series is to feature videos made by individual Sudoku setters and other UA-cam channels.
#learn #sudoku #youareawesome
Strategies demonstrated in this video:
Alternate Inference Chains (AICs) With Extensions
Timestamps
0:00 Intro
00:36 DxSudoku Intro
01:41 Hodoku Tips
02:13 Solving Puzzle With AIC With Extensions
12:30 Outro
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sudokuprimer.com/smart-hobbie...
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Let me know what you think and how you did in the comments below. Thank you so much for watching.
Timberlake
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Check out David Peru’s DxSudoku UA-cam channel here: www.youtube.com/@dxsudokuchannel Thank you so much David for the collaboration!
Timestamps
0:00 Intro
00:36 DxSudoku Intro
01:41 Hodoku Tips
02:13 Solving Puzzle With AIC With Extensions
12:30 Outro
I watched your friends video. That technique may work for some. It was 1000% harder than it needed to be. I loaded the puzzle into sudoku exchange website. I found 1 naked 8, and marked all candidates. I then looked for bi value cells that seemed to connect and used coloring to look for conflicts. After 1 failed chain of 8 digits I revealed 12 new correct digits in the grid. Then I colored another chain of only 6 digits finding a conflict in one of my bi value cells.from here I continued, filling in the other chain and the whole puzzle solved in about 15 minutes TOTAL (incl. pencil marking) you might call it bifurcation but it was WAY easier and faster than the crazy hassle on that video.😊
Wow! That is quite amazing. Can you share some insight on how you pick the cells to start your chains?
Okay, I tried it. Once I placed a number of digits, and followed my usual rounds, eventually filling the gird with centermarks. I found a short AIC(?) that showed a 21 cell to be 1, and kept going until I realized I'd broken the puzzle. I kept trying things in different orders, still getting things such as naked voids. I finally stripped all my pencilmarks, although I kept my placed digits, and repopulated the grid. I found something that apparently cracked the puzzle wide open, until I found I'd broken it again. Apparently, one of my digits was misplaced. I may retry it, but for now, I need some rest.
This is a ferociously hard puzzle, John, to solve logically. DxSudoku has been improving this technique with each of his videos. I hope you give it another go.
Nice 👍
Thanks ✌
I thought I was getting better with Hudoku but this guy runs circles around me. As for his method: clear as mud.
Adding to my post: on the positive side, David has several excellent videos on using this strategy; all worth repeated viewings!
Wow! Thank you, Timberlake, for suggesting my puzzle to DxSudoku. You said he had a technique to solve the hardest puzzles, and you weren't kidding. Obviously, such an advanced methodology is not to everybody's taste, but its power and efficacy are beyond doubt. Additional thanks are due to Clover, who created the GAS puzzle (“Leaps and Bounds”, 2023-12-25) that inspired my far-from-GASeous creation.
Just so that everybody can participate, here's a somewhat easier variation:
023 000 004
100 400 230
000 050 000
000 006 009
056 000 780
400 700 000
000 080 000
075 009 003
300 000 120
023000004100400230000050000000006009056000780400700000000080000075009003300000120
You are welcome Julian. I am glad you sent this to me. I knew it would be perfect for @dxsudoku to try his technique on.
@Julian, thank you for the awesome puzzle! I really enjoyed solving it. It was a challenge and several times I had my doubts I would be able to solve it. The constellation of givens were beautiful. A really nice puzzle.
@@dxsudokuchannel Thank you for battling through what is probably my hardest Sudoku to date. I'm truly amazed that anybody can solve such a puzzle. Until yesterday, I would have rated it as “beyond human comprehension”, but your beautiful method (which I can't say I really understand as yet) has proved my grading unduly pessimistic. Thank you, too, for appreciating the beauty of the layout. I specialize in producing aesthetically pleasing grids, and it often disappoints me that so few people seem to notice the carefully crafted “constellation”, as you put it. Interestingly, the grid you solved was not even the most beautiful of the 30-odd members of its still-growing series.
If you are up for another hefty challenge, perhaps you'd like to have a go at another of my monsters. According to HoDoKu, it's only about half as hard as the one you've just solved, but it's still brutally difficult after the first few write-ins:
002 000 100
050 002 030
800 040 506
000 007 080
001 000 900
020 300 000
405 060 007
070 800 050
009 000 200
002000100050002030800040506000007080001000900020300000405060007070800050009000200
Naturally, if it seems suitable for your channel, feel free to feature it.
Being a handcrafted puzzle and not a computer generated one I was on the lookout for a logical "trick" which I assumed must be planted in there somewhere
@@AnonimityAssuredI'm planning on doing a new video showing the technique step-by-step in more detail. I think I might do it as a live solving so people can hear my thought process of how I decide which starting candidate to use in the chaining sequence. But what I am doing logically is identically to the way X-Chains work. Anyway, thanks for your awesome comment above! Your puzzle took me several days. It really was a good challenge. Very tightly knotted.
I didn't enjoy this at all. If you have to go through this rigmarole to solve a puzzle, it's no fun, in my opinion.
I appreciate the feedback. What type of techniques do you prefer?
@@SmartHobbies Something I can do without a computer.
@@Pwecko Sounds good. Do you normally solve Sudoku via app or paper and ✏️?
@@SmartHobbies I use an app.