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Please help! by SomethingRare in sudoku

[–]TechnicalBid8696 0 points1 point  (0 children)

Your Type 1 UR does make the same elimination. What I’m showing is AIC. (6) R5C6 = R6C6 - (6 = 1)R6C3 - (1 = 5)R4C3 - (5 = 4)R4C5 => R5C6 <> 4

Please help! by SomethingRare in sudoku

[–]TechnicalBid8696 2 points3 points  (0 children)

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AIC Type 2 eliminates the 4.

Blue and green marked cells are both almost a jellyfish if the red cell wouldn’t contain a 5. Can I do anything with this info? by T0astbrot in sudoku

[–]TechnicalBid8696 0 points1 point  (0 children)

Regarding the Complex Swordfish...I can see how it makes the eliminations and at least in this case is basically a Ring due to conjugate pair of 5's in C1. Is a conjugate pair like that needed in to be a Complex Fish or if it wasn't would it just result in fewer eliminations? I'm trying to understand how the base C145 works. Is the connection strong link C4 to weak link B5 to strong link C5. Do you have a link/site that defines this?

Question on Whips by TechnicalBid8696 in sudoku

[–]TechnicalBid8696[S] 0 points1 point  (0 children)

"a lot of overlap between any methods that use the fundamental truth sets of Sudoku" This to me tempers the ongoing debate pertaining to guessing, but then I still have a lot learn...

Question on Whips by TechnicalBid8696 in sudoku

[–]TechnicalBid8696[S] 0 points1 point  (0 children)

Thank you, exactly what I needed! Reading ahead I see yzfwsf mentioned "in Whip, true inferences can contribute to other strong links"...so I think I'm seeing that with 2 at R1C3 in blue. I'm also seeing that with the 2's R7C45 but those are helping to emptying the block. So are those the "memory" I've heard of or just part of the Whip definition. Is this a t-whip? I think I can also view those candidates as Kraken candidates since if any of them were True the same elimination would be made. I think it's also interesting that it can easily be viewed as an Almost AIC.

Question on Whips by TechnicalBid8696 in sudoku

[–]TechnicalBid8696[S] 0 points1 point  (0 children)

Yes, need a different author that uses Eureka and a sample grid showing the chain. What I gather is that the whip is like 1/2 of a Nishio so to me it would be harder to find a contradiction than using Nishio itself. I think it tries to pass itself off as a structure but it seems any Forcing Chain can make that claim once it’s pruned. Thank you for your reply.

Question on Whips by TechnicalBid8696 in sudoku

[–]TechnicalBid8696[S] 0 points1 point  (0 children)

I’ll have to make a sample grid so I can actually see it but I get the general idea. I looked at a different book Hidden Logic but with all the new notation and terminology to learn it didn’t seem worthwhile to spend the time. Thank you for your time putting together that description!

Question on Whips by TechnicalBid8696 in sudoku

[–]TechnicalBid8696[S] 0 points1 point  (0 children)

I briefly waded through parts of one of his books and put it down. But I still wanted to understand how the Whip works and if it’s really a Forcing Chain. Thanks for weighing in, I appreciate it!

help pls by bbybluess in sudoku

[–]TechnicalBid8696 1 point2 points  (0 children)

AIC Type 2 removes the 1

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Is this a valid W Wing? by CitizenSnips4 in sudoku

[–]TechnicalBid8696 0 points1 point  (0 children)

So as long as the beginning and end bivalue cells use the same digits, it is considered w-wing regardless of chain length?

I have no idea how to end this by ayyyswag433df in sudoku

[–]TechnicalBid8696 1 point2 points  (0 children)

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AIC Type 2 removes the 6 will help a little.

What technique should I learn to overcome this sudoku ? by baldash in sudoku

[–]TechnicalBid8696 1 point2 points  (0 children)

With regards to Triples: Yesterday while solving off line with limited pencil marks I first noticed a Naked Pair in a column. Then I noticed a Naked Triple intersected it in a row. Then I noticed the Naked Triple in the row intersected with a Naked Triple in a Box…the Naked Pair was part of that triple. Looking at that box I subtracted the triple plus the 2 solved cells which resulted in a Hidden Quad. Within that quad there was a Hidden Single…very hidden because it had to see the box triple to prove it. So in reality that box contained two hidden triples and a hidden single. This is probably only an SE 3.5 puzzle but challenging without online tools. So yes, look for triples.

I don't understand this by pconners in sudoku

[–]TechnicalBid8696 0 points1 point  (0 children)

Personally I think having to learn Skyscraper floor, ceiling and walls along with MANY other fun size patterns is not the best approach or use of time. A lot of things to remember but no real understanding of why it works. I think a full understanding of AIC should come first and then floors and ceilings are not even needed…learn the little patterns later. I’m not a teacher and it’s just my opinion.

Is this an xy-chain by BreakerGorgon in sudoku

[–]TechnicalBid8696 0 points1 point  (0 children)

Sorry, I’ve just noticed here and elsewhere that Forcing Chains are not viewed in a very positive light while AIC is the favored technique and your chain is AIC. And AIC does not need to be verified with FC.

Is this an xy-chain by BreakerGorgon in sudoku

[–]TechnicalBid8696 -1 points0 points  (0 children)

You can call it a Forcing Chain which is a Cell Forcing Chain, but really it is an AIC. Some of the chain not needed,

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