Hidden Pairs a.k.a. Hidden Matching Pairs - Solving a More Difficult Puzzle

[@normweldon9852]

Wow! That was a great lesson, Coach. I expect I'll be watching it over many times, pausing constantly. Thank you for this lesson. I think it will help greatly as it gradually sinks in to my 75 year old brain.

[@LearnSomethingNewEveryDay]

Thanks Norm for that nice comment! My 81 year old next door neighbor does Sudoku every morning as a ritual to keep her mind sharp. I hope to be as wise as her when I am 81!

[@cathyarp806]

Finally! 😃. A sudoku instructor with clear and concise instruction and diagrams at a speed that can be followed.

[@LearnSomethingNewEveryDay]

Glad it was helpful, thanks Cathy!

[@williamhill6719]

Hello Coach! Great videos and I do like you speaking your thoughts as you go along. At timestamp 5:49, I am unclear why the 3/6's in row C/Block 1 are selected as a hidden pair when other 3/6's are present in row A/Block 1 and Block 3, and row C/Block 3. They appear to be just as likely candidates. I watched this section of the video multiple times and struggling.

[@Anaphase001]

Same here!

[@OsmanEralp]

In Block 2, there must be a 9 in Row C, Column 4 or Column 5. Thus, you can remove all other nines in Row C. That leaves the 3/6 pair in Row C, Columns 1 and 2.

[@joquirante9234]

Yes! Same

[@boogerwall4264]

Same here.

[@boogerwall4264]

I think I understand why, I was also confused about this. So essentially because it's the only 2 possible candidates in those cells they are matching pairs so we can safely cross out the 3 and 6 from block 3. Rewatching the video on matching pairs helped me understand this part of the video better. Hope this helps, Nicolas.

[@pdubward2015]

I love you showing how to do the puzzles. It really helps me learn faster b/c it’s hands on. If it’s a bit too fast, I just rewind but it helps my dpeed too! You are my favorite teacher!

[@brigsivasankarvidyasagar2530]

Respected Madam, Finally I could locate your channel page and also saw your playlist. You have uploaded so far 7 videos. I am eagerly waiting for few more videos. Your method is actually teaching us how to solve a puzzle and not yourself solving puzzle like many sudoku experts do in KZbin. Well done and accept our compliments for doing a good job. You may put some sudoku teachers out of job as you have gained large number of subscribers. warm regards

[@LearnSomethingNewEveryDay]

Thanks again Brig, I really appreciate your feedback and glad you found the channel page. As you probably can tell from the page my full time career is as a statistics professor at a local University. However I love making "explainer" videos, so I will continue to upload lessons. I look forward to your feedback on how I can improve the presentation. Be well, and thanks for the comment!

[@def3797]

This was a really helpful lesson. Hope you do many more! Hidden anything are always a challenge to me but your explanations were sinking in and I will watch it again. Thanks.

[@LearnSomethingNewEveryDay]

Thanks so much DEF, I really appreciate it!

[@BeverlyCobb]

At 5:17 when picking out a hidden pair in Row C "369/369," you pick out the "36" as the hidden pair. Why did you pick 36 instead of 69 or 39. How do you know which pair is the correct hidden pair to use? Or, what about the 36 pair in C8/C9? Why not start with that hidden pair? This is where I get hung up, What pair to choose as the primary one to single out first.

[@boogerwall4264]

I badly need the answer to this question as well.

[@susanna_2001]

Hey so the 9 can only be in the third row . Look at the 3rd box row 2. this Shows that the 9 has to be in the 3rd row in the second box. Thats why the 9‘s in the first box get eliminated :)

[@larryblair6914]

Your approach has helped cement some important concepts others intuitavely brush over. Looking forward to following you on some hard sudoku puzzles. Great job!!!

[@lindac6147]

A great video. You are by far the best teacher on KZbin. One thing though …this method of showing all the possible digits in a unit ( sometimes up to 4 or 5) isn’t really how you teach to do a puzzle . I do hope you begin again releasing more Videos as your a true teacher and instructor . Many thanks 🙏

[@tiamelancholyjeoncockity]

as a beginner this helped me so much and improve so fast 😭 I know there's techniques to it and all and this is one of the best ones by far

[@paullembourn2188]

I have just started Sudoku and find your tutorials very helpful. However, I have a question to time mark 5:15. How can we determine that 6 and 9 in C1 and C2 is a hiddn pair? Why is not 3,6,9 in cells A1, C1 and C2 a triplet?? (If we delete 4 and 7 from A1 we end up with a naked single in A3, which also seems viable??? I am very confused.

[@Tee-Catin]

I agree. I'll be watching it many times as well - and yes, I definitely LEARNED SOMETHING!

[@LearnSomethingNewEveryDay]

Thanks Andrea, its like a good movie, you have to watch it a couple of times to see everything! Get a blank grid and fill it in so you can follow along. Thanks for the comment!

[@Tee-Catin]

Looking at timestamp 2:15, I am still a little confused as to why cells B-5 and B-6 could not be considered a hidden pair for 3 & 6. I see the triplet, but I also see that the 3 & 6 combination only appears in those two cells. I am looking at another example I found online which seems very similar, but in that example, it identifies a matching pair. I don't see an easy way to upload a screenshot of it to these comments, so perhaps if I can get a lightbulb moment for my question here, I will understand the other example as well. If not, I will add the link in another reply. Thank you. I have moments of clarity when I feel like I've made great progress, then a few minutes later, I find myself confused again. Part of the learning process, I guess.

[@LearnSomethingNewEveryDay]

Thanks for the question Andrea. There is a 6,8 a 3,68, and a 3,6 in those three cells. The 3,6,8 and 3,6 is not a hidden pair because the 6 can also go into B4, its only a hidden pair if those are the only TWO cells the 3 and 6 can go in, but if you include the 8, now you have three numbers, 3,6,8 that can only go in three cells, so its a triplet. It's not a pair, the two numbers have to go into ONLY two cells and they don't since the 6 appears on 3 cells. Does that help?

[@Tee-Catin]

Thank you!

[@flycasterbryan]

Brilliant I’ve learnt so much watching your videos, you are definitely the best, keep teaching. Thank you Bryan.

[@LearnSomethingNewEveryDay]

Thank you Bryan for such a kind comment, I appreciate it!

[@kathytiffin6518]

Thank you! Very clear explanations.

[@brigittemercier9421]

Very well explained

[@rafaelali9925]

Thanks, your tutorial has been a great help. Also, i like the way you explain the puzzle, very easy to digest? I will be keeping an eye on you. Good work.

[@Ulujmf]

I don't understand at 3:57" why 7can only be in A1 A3 why not in c1 c2 c3 why is the rational to claim this , same for matching pair 1 4

[@yahngtoonz]

Sure, there are other 7s in block (box) 1, but she was focusing on row A and the 7s in that row. Since A6, A7, A8 and A9 don't have a 7, then the 7s are locked in for A1 and A3. Because they're locked in, they eliminate the other 7s in that block (box) because no Row, Column or Block can have duplicates. Again, she was focusing on the 7s on row A. It's why she highlights it. Hope that makes sense. Cheers!

[@RickSegui]

Please make it easier to find videos in sequence. KZbin has everything scrabbled. What app do you use? Thanks! Rick

[@patricksmith3135]

@LearnSomethingNewEveryDay. What is the software that you use in your lessons? I am very interested in this aspect rather than a desk covered with eraser pieces. Thanks.

[@brigsivasankarvidyasagar2530]

Respected Madam, You are an excellent teacher. Kindly put up your play list so that we can see which all videos are there.

[@LearnSomethingNewEveryDay]

Hello Brig, thank you for your kind comment. On my channel page I have a playlist called "sudoku lessons" can you check if you can see it? Thanks for your support, I appreciate it!

[@brigsivasankarvidyasagar2530]

Respected Madam, Can you show your Sudoku Lessons in the Description of your next video. I do not know how to go to your channel page. warm regards

[@LearnSomethingNewEveryDay]

Hello Brig, I discovered something that might help you. When you watch KZbin on a PC there are 3 small dots to the right under the video in the default view. Its above the subscribe button next to where it says "save". If you click on the three dots there are two choices, "report" and "open transcript", then you can copy and paste a transcript of the video. I hope that helps! Meanwhile I am trying to figure out how to get KZbin to make the subtitles break in better places....working on it....

[@suzonnebardwell9704]

Thank you, thank you !!!!!!

[@Tee-Catin]

So I have two more questions, if that's OK. When you say a triplet is three numbers in any combination, does that mean one or two of those cells could contain only one number as a pencil marking, or must they each contain at least 2 numbers? My other question - is it only possible to identify matching pairs and matching triplets if we have all possible pencil markings entered for the unit under consideration. I have made so many mistakes thinking I had identified a pair or triplet because I had not worked the puzzle to show all possibilities. I didn't think working out all possibilities for every cell was considered a good strategy.

[@LearnSomethingNewEveryDay]

Hello Andrea! I will be doing an in depth video tutorial on triplets in the near future. But the general rule is 3 numbers, 3 cells, and those 3 numbers have no other cells they can go in that unit (block, row, or column). They can be in any combination, abc ab ab or abc ab ac or even ab ac cb. Stay tuned for that. As for your other question about working out all the possibilities, no its not a good strategy at the beginning of solving a puzzle, use other strategies, but towards the middle to end when you get stuck then you will need to work out the possibilities and you might find some hidden pairs, triplets, xwings, other combinations to help solve the puzzle. Easy to medium level doesn't need it as much as the medium to harder puzzles. But save that for the end game. Good luck!

[@Tee-Catin]

@@LearnSomethingNewEveryDay Thank you again! I think the key word I was missing in this tutorial was "combination", so that would imply at least two numbers in any cell of a triplet. Now I understand. I have been working only medium or hard level puzzles from the NY Times. The easy level got "too easy" very quickly. Sometimes the "hard" puzzles seem much simpler than the "medium" ones 🙄. Based on your reply, maybe my strategies have not been as inelegant as I think they are. It takes me about an hour to solve a medium level puzzle and about two hours to solve a hard puzzle. I read something online where the person was solving them in 6 minutes, so I lost confidence temporarily. I'm really looking forward to your deep dive into triplets. Thanks for all you are doing for us!

[@brigsivasankarvidyasagar2530]

Respected Madam, The English Sub tiltes appear on the grid thereby covering many cells. Kindly request your software developer to place them in the vacant place in the right side by reducing the size of fond. We miss your lessons because of your English sub titles.

[@LearnSomethingNewEveryDay]

Thanks Brig for letting me know. I uploaded the text to KZbin and they are supposed to adjust the timings automatically. I will check to see if I can do something so their software understands where to break up the sentences.

[@edithzapata1883]

It's a great lesson

[@LearnSomethingNewEveryDay]

Thanks Edith Z, I appreciate it!

[@didi7680]

I'm going to have to give up on Sudoku. I just DO NOT understand anything but the obvious. I'm sitting here crying cuz I screw up every hard puzzle. Plus, all the books I buy where they are labeled very easy are the hardest of all which pisses me off. I've written to the companies and never get an answer. Also, I don't understand if I have to fill in the entire puzzle at once before I do ANYTHING or can I just fill in one block, row, or column and just work that way.

[@patricksmith3135]

Hi. I am new to sudoku and still have trouble with 'easy' puzzles though I am getting better and have solved some 2 star ones too. I am interested in acquiring software for my MacBook. I really like this new challenge but I'm tired of constantly erasing errors, numbers that have been played etc.. I see the material you use with all the possibilities and the ease of adding and deleting and no vacuum cleaner afterwards.. Could you recommend a title? Have you heard of "Sudoku Daily" It is free. I want to input puzzles from my newspaper and other sources etc plus perhaps get some more from the software as I get better. Any recommendations. Thank you for your well planned videos. I'm subscribed and I repeat as needed.

[@georgesthibaudeau1533]

At 2m10s, the 14 matching pair is the product of bad pencil marking: there is already a 4 in col 1 in row 5 that was not entered due to a clear mistake. Therefore the 4 can only be in r2c3. It seems to me all this bad pencil marking stuff is just a way to obfuscate a sudoku puzzle where the solutions are available at a quick glance. Puzzle done without making any notation in 16 minutes.

[@boogerwall4264]

I see what you mean, but I think it's just to give an example. Maybe it wasn't the most well pondered sudoku example, but it's definitely a good way to illustrate the hidden pairs.

[@garryperrin2408]

I am seeing what’s going on now, he he!

[@yahngtoonz]

At 6:40 she catches the hidden single 4 in block (box) 4. She caught it and explained it.

[@philbaum449]

Love your videos but your captions at times block out the game which it makes it hard to follow.

[@karinajaparova779]

V

[@LearnSomethingNewEveryDay]

Thanks Karina!