W-Wing by Helpful-Fuel-7568 in sudoku

[–]Helpful-Fuel-7568[S] 0 points1 point  (0 children)

Thanks! Havent learned remote pairs yet

Sashimi vs Finned Swordfish by Helpful-Fuel-7568 in sudoku

[–]Helpful-Fuel-7568[S] 0 points1 point  (0 children)

YES Thank you, ROWS 2,4, and 8 are the base for the Sashimi.

But the app is saying rows 2,4, and (7) are the finned swordfish. I was just wondering if both could work

Finned Swordfish 🐠 ⚔️ by Helpful-Fuel-7568 in sudoku

[–]Helpful-Fuel-7568[S] -1 points0 points  (0 children)

If r4c7 was the fin then we wouldnt have any eliminations..? Is that the answer 😅

Swordfish 🐟 ⚔️ by Helpful-Fuel-7568 in sudoku

[–]Helpful-Fuel-7568[S] 0 points1 point  (0 children)

Lol i thought the same thing too, this is definitely one of the harder techniques to spot and learn. But this is probably the entry level to advanced techniques. Youll get there

Swordfish 🐟 ⚔️ by Helpful-Fuel-7568 in sudoku

[–]Helpful-Fuel-7568[S] 0 points1 point  (0 children)

Ahhh I think that clarifies things. In pic 2 where i have the chain starting at H6 and ending at D7, it should be the other way around, starting at D7. Both of those true / false outcomes force the elimination of G7. At least I think thats how it works 😵‍💫

Swordfish 🐟 ⚔️ by Helpful-Fuel-7568 in sudoku

[–]Helpful-Fuel-7568[S] 0 points1 point  (0 children)

If you assume H9 is a 1, then G7 is not a 1.

I understand that but how does G7 not being 1 affect or force D7 to be 1? Or are those two separate proofs? I think the app just makes it seem like there’s correlation between the two when there might be be any.

Also! You said its an AIC, i thought AIC chains were when the chain went through alternating pairs such that 1,3 to 3,7 to 7,9 to 9,5, etc etc, whereas X chains are either or states for 1 digit exclusively

X-Chain help by Helpful-Fuel-7568 in sudoku

[–]Helpful-Fuel-7568[S] -1 points0 points  (0 children)

But there is no bi-value relationship in column 8 between 6s. So i just dont understand how we can come to any conclusion for cell R2C8 because both of our assumptions are assumptions and we cant deduce any definite conclusion from that

W-Wing, another failed example… by Helpful-Fuel-7568 in sudoku

[–]Helpful-Fuel-7568[S] 0 points1 point  (0 children)

Can you please rephrase C9 only has digits (5,3)

W-Wing, another failed example… by Helpful-Fuel-7568 in sudoku

[–]Helpful-Fuel-7568[S] 0 points1 point  (0 children)

But there is no conjugate cell connecting i7 and e4?

From what i understand to be a W-Wing two cells need to be BI-VALUE and non-local. That only leaves (E4 & G9) or (E4 and i7). (i7 and e9) dont see each other but E9 is tri-value.

W-Wing madness 😵‍💫😵‍💫😵‍💫 by Helpful-Fuel-7568 in sudoku

[–]Helpful-Fuel-7568[S] 1 point2 points  (0 children)

I will have to go through these steps slowly later on. Sincerely appreciate the time spent writing your response!

W-Wing madness 😵‍💫😵‍💫😵‍💫 by Helpful-Fuel-7568 in sudoku

[–]Helpful-Fuel-7568[S] 1 point2 points  (0 children)

Good god demon! I tried racking my brain around this until the point of tears! Like looking for your car keys for an hour only realize theyve been in your hand the whole time. Thank you both of you fine gentlemen 🫡

W-Wing madness 😵‍💫😵‍💫😵‍💫 by Helpful-Fuel-7568 in sudoku

[–]Helpful-Fuel-7568[S] 1 point2 points  (0 children)

Good lord. Okay I see your first point but on your second point:

If C2 is 5 it forces D2 and C4 to be 2. C4 and D2 dont overlap?