The XY Wing a.k.a. the Y Wing: A Useful Sudoku Solving Technique When You Are STUCK !!!
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- čas přidán 16. 08. 2022
- Lesson #12: In Lesson 10 and 11 of my "lessons" series, I covered x wings and the swordfish. the XY wing is an extension of both of these Sudoku solving techniques, and the logic is the same. I cover three different examples of the XY wing in this lesson, please pause and rewind until you understand the technique. It will serve you well in solving harder level Sudoku puzzles. Thanks for watching!
Timestamps:
Definition: 00:15
Example 1: 00:52
Example 2: 04:30
Example 3: 06:55 - Jak na to + styl
When the XY is shown to me, it becomes obvious. However, the odd of me finding one in the wild are slim to none!
Согласен на 100%! Быстрее банальным перебором решить судоку, чем искать (и не найти) необходимые пары. 😏
This is by far the best and most detailed explanation that I've heard. Such a good explanation that is clear. Thank you so much!!
Thanks mam, and please never stop. Your Sudoku tutorials are top-notch.
best explanation of the XY Wing I've come across. Thanks!
Excellent lesson. I have watched many sudoku tutorial and nobody taught this method. Your video are very well explained logically and very well demonstrated with visual cues.
Thank you so much. I don't think I have found anyone that has explained as well as you have so I subscribed
Excellent explanation. I see so many how-to's that show what to look for but don't explain the exclusion logic. This is a very powerful demonstration and learning tool. Thank you.
Never understood this so vividly
Thank you so much 😊
Your instructional technique is excellent!
Excellent video - I’ve watched this video three times over the past week and today I finally found and solved an xy wing. It feels great to have spotted an xy wing and worked out the logic. I have been struggling with the xy concept for sometime and this video make total sense to me. Thank you.
Very clear explanation, with different examples. Thanks to you, i've got it at last! Many thanks.
Excellent presentation. Spot on explanation...simple, elegant, easy to understand!
Fantastic explanation! This is a very difficult topic to explain with clarity and rarely does the light go on in my head, like it did when watching this video. Thank you very much!
Such great explanation, examples and practice! Really, really clear to understand. Thanks a lot!!!
This is the best explanation I've come across! Thanks!
I’ve been confusing y wings with swordfish. Your explanations are helping me so much!
This is best XY Wing example ever! I can actually do them now. Thank you!
A Wonderful explanation. Thank You.
Ahh thank you so much! I finially get it 🎉❤ Great multiple examples, that’s what helped me understand the formula. Thank you again! So satisfying to unlock the puzzle
Great tutorial!
Great Lesson. XY wings are very hard to find (for me anyway). I enjoyed your explanation.
Thank you so much!❤ This was a very well explained video❤
best explanation of the XY Wing Thanks
OMG u r so amazing!!!!!!!!! Thank you for sharing this info!!
Thanks a lot very nice video
excellent
Thank you!!!
My pleasure, and thank you for watching!
Thank you very much for these techniques. I have been learning the XY-wing and the related XYZ-wing from Learn Something and I am hoping this technique will help me solve sudokus that so far I have not been able to solve.
Very good explanation thank u so much mam
This looks like a powerful tool, very well explained by you, thank you. However, one needs practice in spotting the 3 cells.
很棒喔👍
Not following very well, but definitely do a spot check now with the XY and it helps identifies the single # that goes in the box. I use probabilities which work only 90% of the time, though
Detailed and well explained. Gives me confidence to tackle some of the more challenging puzzles I am getting.
Thanks very much for all your sudoku puzzles guides!
nice
What I found tricky here was the reduction for eliminating the possibilities. Looking at example 1 the possibilities were (2368) for cell positioned at (2,3) of block (1,2). This was rapidly stated to be of only possible values (36). This was the pivot cell and so was an essential piece of the argument. I was struggling to see how the other possibilities were eliminated.
I copied this puzzle a couple of months ago, stowed it away, and tried to solve it on my own this morning. I found a different y wing: cells 41, 63 (pivot) and 69 which combined eliminate the 469 in cell 61, leaving a 3 for that cell. Maybe technically it's not a y wing but I think it works.
Thanks for the comment kolst8406! Whatever works, right? There's more than one way to solve most any puzzle. Have a great day!
I love your easy learn way of explaining sodoku but canwe solve a sodoku puzzle without having to rely on x wings orxy wings
How did the pivot cell jump from being 2368 to just 68 with no explanation?
That's the exact place where I get confused, too.
For example 1 - I don't see how this is a y-wing. Both of the wing cells have only two candidates, yes, but BOTH candidates in each of the wing cells are also in the pivot cell. That is until at 1:05 two candidates in the pivot cell magically disappear to make the pattern fit the definition. How did you know which of the 4 original candidates in the pivot cell to eliminate?
In block 5 cell 7,8 also is peer cell
Isn't it Mam In the third example
I’ve got a puzzle with what appears to be an XY wing but it seems to cancel out the correct answer. I’d love to show this puzzle to someone who could help!
2nd example was not needed as we had a 1,5 double which would have left a naked 7 and a naked 8 which would have solved it a lot quicker.
if thats xy wing there is another one with the 79 in the middle box aka box 5, one wing is in box 2 contains 47 and the other wing is in the box 4 and contains 49, either way both box 2 and 4 could have number 4 but that solves nothing
i wonder is it xy wing at all or it is but its just unusable xy wing
someone ?
When you say the answer I see the solution as clear as day and understand until I get another example. Idk, maybe I need Jesus to help me every time.
It looks to me that any of the three cells can be considered pivot cell while the other two wings, right?
I was thinking the same thing.
well yes thats easy theres only a few numbers missing try that with an extremly hard one at beggining
XY wing, Y wing, whatever, it looks like an L to me
0:33 Instead of relying on Google first-page response, in the future how about curating/picking a clearer definition? Because Google's was awful. "unit".... okayyyy, what a uselessly broad term. Ugh. And how does it define "first"? It doesn't. If you're going to try to teach you have to use well-thought out materials that are appropriate to beginners. I think your videos have merit, but teaching is a skill that requires effort to think llike someone who knows little/nothing of the topic you are trying to teach. At 1:02 we see 6,B lose two candidates without explanation. You never explain HOW you spot an X/Y wing, they're just magically green now. Nor do you explain why that is the "pivot" cell (we have to guess it's related to intersection). Again, I think your vids have merit, but you need to proceed from the standpoint that the viewer does not know what you know.
1:53 Seriously? SERIOUSLY? That's your explanation for the naming? Seriously thinking about unsubscribing.
It is hard to find them. First i try to see the "bent triple" . And if i found one ,then i try to make the XY-wing.