Tutorial #79 A sudoku Puzzle to blow your mind.!!! Locked little numbers.
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- Опубліковано 21 вер 2024
- #sudoku #sudoku tutorials #learn sudoku
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Jansaw pointed out that I missed a 3X3 or triplet in block 9 column 8. which meant that all other 1's and 5's could be eliminated. thanks jansaw.
What a fantastic puzzle this was. Knowing how to look for the 2 types eliminations.
1 Matching pairs with in a row or column within a block.
2 Little numbers repeated in a row or column within a block. Also called Locked candidates.
This Tutorial can be watched by beginners as well as advanced levels. There is lots to learn by watching.
This can also be called advanced rule of exclusion.
TMB, LCR, Cross/meet, matching pairs eliminations, ramifications, ( 1 Matching pair + 2 empty cells = another matching pair), mallet pattern ,calculating small numbers possible in an empty cell 3 empty cells, 3X3 eliminations, locked little numbers eliminations. (locked candidates) XY wing,
NOTE Jamsaw pointed out that I missed a 3X3 (triplet ) in block 9
Go to sudokuguy.com scroll down to Index of strategies to find other tutorials and lessons on the same topic.
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Thought for the day. "If you are a curIous person you will learn something everyday"
Great video❗️A little over a year ago I had never worked a Sudoku Puzzle 🧩, I bought a book 📖 of 500 puzzles at the local Dollar Store came home and got so frustrated with directions so I started looking on UA-cam for videos and finally found your channel. I started back with your first videos and worked my way up to today’s videos and now I am even getting ahead of you sometimes in your videos. Thank you so much for opening up Sudoku to me, I have worked well over 1500 puzzles and really enjoy them. I have watched every video and I am still lurning❗️👍✅
Congratulations. for not giving up Mike.
I was getting so frustrated with thinking some of the "hard"& all the "very hard"puzzles just couldnt be done.After seeing your video Yessssss.ive done the very hard puzzles.A bit mind boggling but im sure ile get better-Thankyou x
Thanks Mandy
Thank you for your patience!
You are a GREAT teacher!
Thank you too! Mia. So glad you found my site. “the most popular site online to learn sudoku” Please share with others, subscribe (FREE) and click the bell by the subscribe button. Have fun as you learn step by step to solve. You will find all of my videos below.
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I love how your passion for sudoku has kept you making amazing videos for years.
I have only just discovered Sudoku and between you and Cracking the Cryptic - I feel like a pro!
Your passion shines through in your videos and you quirky sense of humour keeps me coming back all the time.
Geeee! thanks Eli, You have made my day. So glad you found my site. “the most popular site online to learn sudoku” Please share with others, subscribe and click the bell by the subscribe button. Have fun as you learn step by step to solve. You will find all of my videos below.
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Thank you Robin. I think i need to run through your wing tutorials again to help spot them. BTW. I completed your tutorial #80 after a false start so must be making some progress. My next target is the UK Times fiendish in their weekend pull out. 🤯 thanks and best wishes.
Thanks Robert for your support. You are doing well hang in there. So glad you found my site. “the most popular site online to learn sudoku” Please share with others, subscribe (FREE) and click the bell by the subscribe button. Have fun as you learn step by step to solve. You will find all of my videos below.
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You are the Bob Ross of sudoku! I love watching and learning from you, but I also find it quite relaxing!
Wow, thank you! So glad you found my site."the most popular site online to learn sudoku" Please share with others, give me a thumbs up below the video, and subscribe and click the bell by the subscribe button. By doing so you will be notified by youtube when I upload a new video. (It’s FREE) Have fun as you learn step by step how to solve. Below is my home page with all the videos listed. ua-cam.com/users/sudokuguy
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@@SudokuGuy m?vvbnnnjnnm9⁰sp
m. n2
Locked little numbers and a n XY wing solved a very difficult puzzle .
I have listened all your videos and became a fan of you . Slowly I am solving difficult puzzles after an year of practice of medium level puzzles as per your advice. Thank you very much Sir .
All the best, thanks for your support. So glad you found my site."the most popular site online to learn sudoku" Please tell others, subscribe and click the bell by the subscribe button. Have fun as you learn step by step how to solve. You can view all of my videos here:
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What is so important is you make explicit the thought processes involved so we can follow your ideas as they occur to you. You show the process so clearly and it makes problems fun as your approach to frustration is excitement not upset. You see it as an exciting challenge and that comes across in your videos. You are a brilliant teacher as your enthusiasm is catching. Thanks a million . As a teacher of many years I can tell you you are a star.
Gee thanks so much for your support. Please tell others about my site if they wish to learn how to solve. Robin
Hi Robin, just wanted to tell you that you look fabulous and doing so well. I’m delighted you are back with family. Thank you for still teaching us tricks and techniques. 🌸 Just so you know, You will always be OUR Canadian Sudoku Guy! All the very best! Isabel (Victoria BC)
Thank you so much! Isabel
What a half hour!!!!!! Enjoyed it enjoyed it!! What an exercise for my grey cells. At my age (69) I need it. Thank u Robin. You are a great teacher. Rosa. I stay in South Africa but my country is Uruguay.
Yes it was a long tutorial but much to learn for all players at all levels.
Once I get all 9 of a number I write it on the outside of the puzzle with a line through it. Watching the little numbers you still have to keep your eye on your big numbers. You could finish with the 7s . 👍💗🇨🇦
Great job Jayne. if you look at my earlier tutorials and lessons you will see that i do something similar. So glad you found my site."the most popular site online to learn sudoku" Please share with others, give me a thumbs up below the video, and subscribe and click the bell by the subscribe button. By doing so you will be notified by youtube when I upload a new video. (It’s FREE) Have fun as you learn step by step how to solve. Below is my home page with all the videos listed. ua-cam.com/users/sudokuguy
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Thanks, professor. Your tricks were very helpful. I have been isolated due to our snowstorm. I wanted to keep my brain active and positive. Stay warm and healthy. 👍
Well done. A great activity to do when you are stuck at home with a snow storm. I have been there. Happy learning as you watch each video. Robin
Thank you so much professor. Really enjoyed your sudoku and finally I was able to learn few tricks especially the PIVOT. A Good teacher is someone who teaches in a way that everyone could understand. I really love your way of teaching which is very simple and easy to understand. Slow and Steady wins the race always.
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Thank you for showing these locked pairs. you are giving me confidence to try harder puzzles.
Glad I could help! Yes locked little numbers are very valuable when solving hard puzzles. So glad you found my site."the most popular site online to learn sudoku" Please share with others, subscribe and click the bell by the subscribe button. Have fun as you learn step by step how to solve. For a list of videos go here:
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I do not know if you see these comments but i know it at least will help the algorithm and you deserve all the love i can send. I am autistic and i have been practicing sudoku for months since i emailed you and you answered with help. I finally got myself to a place where i was getting stuck and ready to get on here and absorb all your teachings. I am tickled beyond belief that i have picked up the first method easily. I am half way through the vlog but i wanted to show my deep appreciation for all you do by leaving a comment. Because comments help the algorithm, when i learn from one of your vlogs going forward, i will do my best to jump on and leave comments since its the very least i can do for all your hard work. Thank you for your videos. I can see i will be turning to them more going forward as i dive in deeper to harder sudokus. I got to the point where iam blowing through all the supposed harder ones and it was leaving me frustrated. I am now using yours and cracking the cryptics puzzles to fulfill the need for difficult. Thanks again lovely human.
Thanks so much for your support.
First time I come across this channel. I really appreciate the energy and passion while showing some of these techniques. Yes, there were easier ways to come to the same conclusions in some spots, but this is a tutorial and what matters is demonstrating the technique to help with those puzzles where there is no way forward without knowing the technique. I really wish that I had come across this channel back when I was doing research to learn just such techniques!
One piece of advice that helped me more than anything when moving to pen and paper from using software that would eliminate candidates automatically when filling a cell, was to always finish dealing with the consequences of adding a number before moving to the next by deleting ever other candidate from the cell and just leaving a single little number in it until I was done with all the consequences of adding a large digit. Being disciplined with this can lead to a lot of saved time.
Very well said. Thanks for sharing Vendavalez here is my channel with all videos. Each video takes you a step further. You are now on your way to enjoy solving sudoku. Watch each video in order and master the easy puzzles first. Each video takes you a step further.
So glad you found my site."the most popular site online to learn sudoku" Please share with others, subscribe and click the bell by the subscribe button. Have fun as you learn step by step how to solve. For a list of videos go here:
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what a sweet gentleman having the time of his life!! 👏💛
You are so kind. Please tell other about my site on your tube
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As I work on my puzzles I can hear your voice saying “Let’s have a look 👀 at the ramifications!” Thank you!!!
Wonderful! and thanks for your support. Please tell others about my site. the most popular place online to learn sudoku
Господине Робин голем поздрав од Македонија. Секоја лекција е многу интересна. Поздрав и останете во добро здравје.
ua-cam.com/video/ocYLlvrJqKk/v-deo.html this will help you with the language of your choice. Mitra So glad you found my site. “the most popular site online to learn sudoku” Please share with others, subscribe (FREE) and click the bell by the subscribe button. Have fun as you learn step by step to solve. You will find all of my videos below.
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Hi.Robin I have been watching your sudoku solving lessons.they are very helpful and ur way of explaining is fantastic..
Thanks So glad you found my site."the most popular site online to learn sudoku" Please share with others, give me a thumbs up below the video, and subscribe and click the bell by the subscribe button. By doing so you will be notified by youtube when I upload a new video. (It’s FREE) Have fun as you learn step by step how to solve. Below is my home page with all the videos listed. ua-cam.com/users/sudokuguy
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At 10:10 I saw that there were three cells that could hold the number 5, but you only signaled two of them. I did not understand your reasonings for ignoring the third cell on the last block that could also have a 5 value. But some time later, when you filled in ALL the possible values for the still empty cells, I noticed that the candidate number 5 missing, was put there. Greetings.
Good observation Antonio. I can't remember why I did that.
Even I noticed it....
Dear Robin, thanks for pointing out these tutorials. I'll run through them in the coming days. For now, though, it's bedtime here in Europe.
That's fair enough!!!! Very valuable tutorial this one.
Sr you’re the best teacher 👨🏫 for sudoku
Thanks 🙏 God bless you and your family
So nice of you Rozik. So glad you found my site. “the most popular site online to learn sudoku” Please share with others, subscribe and click the bell by the subscribe button. Have fun as you learn step by step to solve. You will find all of my videos below.
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Can’t wait to hear about your trip and your new home!
I suggest you sit in on the live streaming I will do after the premier of tutorial #79 which is on the 19th of June at 4 rpm Sydney time. For more details you can go to the COOMMUNITY tab on my channel page.
Thanks for the video Robin, I like your style and find them easy to follow, you certainly proved the strength in helping to solve the puzzle. Also thanks for explaining the XY pivot - something I would have easily missed without you pointing it out, a valuable lesson right there.
You are so welcome! Captain Midnight. there is always something to learn Hang in there. U can do it. So glad you found my site. “the most popular site online to learn sudoku” Please share with others, subscribe and click the bell by the subscribe button. Have fun as you learn step by step to solve. You will find all of my videos below.
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By golly, you are full of beans this morning ( morning in South Africa), looking forward to watching and listening to you in this tutorial....hope you are enjoying yr new home.
Wonderful to know that South Africa can view this. So glad you found my site."the most popular site online to learn sudoku" Please share with others, give me a thumbs up below the video, and subscribe and click the bell by the subscribe button. By doing so you will be notified by youtube when I upload a new video. (It’s FREE) Have fun as you learn step by step how to solve. Below is my home page with all the videos listed. ua-cam.com/users/sudokuguy
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OMG. I final understand the looking for numbers crossing. I couldn't understand it in the video that you did with the strips of cardboard. Thanks so much.
Sharon ....you are now on your way to use the cross/meet system. I use it for all puzzles.
Robin, that was fantastic. Locked little numbers, and the x y trick was the key for me. Amazing, you are the bomb (bomb meaning good). Thank you for doing this puzzle. Today I threw away all those puzzles I couldn't figure out, and now I'm thinking, darn, I wish I had keep them since you showed me about the x y trick and the locked little numbers. Thank you thank you thank you!!!
My pleasure. So glad you found my site."the most popular site online to learn sudoku" Please share with others, subscribe and click the bell by the subscribe button. Have fun as you learn step by step how to solve.You will find all my videos here
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Great video, Robin. I really enjoyed your term locked little numbers. I posted a similar video on my channel where I discussed the 7 best Sudoku strategies used to solve puzzles like this. It’s interesting to see your take on this topic.
Thanks. Smart Hobbies. All the best.
Thanks for another great puzzle done from start to finish. I find it very helpful when you do the hard puzzles from start to finish. I actually could not finish this puzzle when I first attempted to do it before watching the video. When I watched this video, I found the technique I was missing, which was the X Y wing you found at approx 39:00 minutes into the video. Being able to see the technique used on a real puzzle will help me hopefully to remember this technique. I saw you mention in other videos how it is hard to remembering all the different techniques. I am finding that so true. Thanks again!
Thank you for your encouraging comments. Yes you are right. It takes time to learn the tricks and watch for them. Nothing like practice. Hang in there Palmedes.
Thank you from Tunisia.
Thank you too! So glad you found my site."the most popular site online to learn sudoku" Please share with others, give me a thumbs up below the video, and subscribe and click the bell by the subscribe button. By doing so you will be notified by youtube when I upload a new video. (It’s FREE) Have fun as you learn step by step how to solve. Below is my home page with all the videos listed. ua-cam.com/users/sudokuguy
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Thank you. I appreciate all your videos. Nice shout-out to Will Shortz!
He's great.
This was great! I was missing two important techniques.
Glad it was helpful Sandy. Thanks for your comment
I was already pretty good at doing sudokus I found in some magazines but never found one that stumped me …
… until I noticed the interesting titles on some of your later videos!
So, I copied the puzzle from this video before watching you solve it. Easy I thought, but soon I hit a brick wall. So, I ran your video and learned a couple new techniques
The mallet
The xy wing
Without these, you just couldn’t solve this!
Guess I was just lucky that all the other “difficult” sudokus I did in the past weren’t “diabolical”
Now I’m going to go back through your other videos to see what other secrets you have to share!
Thanks for the GREAT, comprehensive and thorough explanations!
Thanks for your comments. Glad you learnt something and so glad you found my site. “the most popular site online to learn sudoku” Please share with others, subscribe and click the bell by the subscribe button. Have fun as you learn step by step to solve. You will find all of my videos below. There are many more tutorials coming for the advanced player.
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Bcoz of u I made a progress answering my sudoku book ,ty ❤
All the best. Lots to learn. Robin
You really come up with interesting puzzles. This one was a treat, with the kinds of challenges that are perfect for those who like to play without notations.The two triples 238 from digits respectively pointing into block 1 and block 9 were so much fun to handle. This one made me work a little bit: just under 20 minutes.
Glad you enjoyed it!
I learned 2 tricks today, thank you.
That's great Alice. So glad you found my site. “the most popular site online to learn sudoku” Please share with others, subscribe (FREE) and click the bell by the subscribe button. Have fun as you learn step by step to solve. You will find all of my videos below.
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Thanks for the video. Congrats from Italy
Thanks for watching Marco, and thanks for your support. I will be uploading tutorials still but not giving private help. Robin
Haha the trailer is awesome, I bet the video will be too. Thanks, Mr. Robin!!🙌
It's a long one but you will learn much.
Very nice puzzle. You make it look so easy. Thank you very much
Thanks for your support. Hope you learnt something.
Sir, this technique saved me , thankyou 👍🏻
Glad to hear it. Hang in there because locked little numbers are essential to spot in very difficult puzzles. So glad you found my site."the most popular site online to learn sudoku" Please share with others, subscribe and click the bell by the subscribe button. Have fun as you learn step by step how to solve. For a list of videos go here:
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The best channel on youtube. Greetings from Germany
Wow, thanks! The next few tutorials will be on locked little numbers sometimes called locked candidates. The most valuable one will be tutorial # 82 all going well with the shipping of my board to Australia from Canada. Yes I have moved to Australia. Please share with others and give me a thumbs up below the tutorial
Qué tal Mr Robin the Sudoku, recibe un cordial saludo desde la ciudad de México. He visto todos tus vídeos desde un principio y he aprendido mucho, gracias por ello. Al principio los resolvía siguiendo su método pero conforme he avanzado, he logrado mi propia metodología para resolverlos y he logrado simplificar el poner tantos "little numbers". Debería de subir vídeos más seguido para practicar. Felicidades!!
Hola Héctor, gracias por tus amables palabras y gracias por encontrar en mi sitio el lugar más popular en línea para aprender sudoku. No hablo español, así que espero que esta traducción de Google esté bien.
This video moved me from being pleasantly surprised when I noticed one of these to actively searching for them. It makes quite a difference!!
Thank you Richard for your encouragement. Happy searching
A big thank you to you and your sweetie! This video was a big breakthrough for me!
You are so welcome Vicke. You are now ready to enjoy solving sudoku. Master the easy puzzles first. Watch ach video in sequence as each video takes you a step further. So glad you found my site. “the most popular site online to learn sudoku” Please share with others, subscribe (FREE) and click the bell by the subscribe button. Have fun as you learn step by step to solve. You will find all of my videos below.
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Hi Robin, you are the best teacher on the Internet as i know. I love ❤️ to watch your videos to learn the sudoku techniques. I try to watch as many as I can, whenever I have time, and appreciate all your efforts and teaching. However, besides watching your video, I would like to ask you to recommend me a good sudoku technique book for me to buy, so I would have another resource to sharping my skills. Thank you very much for your help.
Wow, thank you! Yu Ch You are not the first person to ask this. I have to be honest at this time there is no book which I could recommend which explains the procedures, techniques and tricks that I teach in a simple way so that the average person can understand. Sorry
Thank you very much MR. Robin from Tunisia 🇹🇳
Wonderful to know that my site is available in Tunisia So glad you found my site."the most popular site online to learn sudoku" Please share with others, give me a thumbs up below the video, and subscribe and click the bell by the subscribe button. By doing so you will be notified by youtube when I upload a new video. (It’s FREE) Have fun as you learn step by step how to solve. Below is my home page with all the videos listed. ua-cam.com/users/sudokuguy
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I will use this technique from now on, what an amazing video 🥰🥰
Yay! Thank you! Please tell others Ani.
thank you so much for sharing amd I learned a lot
Glad to hear that
Thank you Sir. I learned a lot.
So nice of you So glad you found my site."the most popular site online to learn sudoku" Locked little numbers are valuable when you get to very difficult puzzles. They are covered from tutorial 79 and up. Please share with others, subscribe and click the bell by the subscribe button. Have fun as you learn step by step how to solve. For a list of videos go here:
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Wow what a puzzle👍👍👍 gteat learning tool, thanks from down under. Now sit back relax and enjoy the grand kids and a glass or 2 of 🍷🍷🍷🍷👍👍👍
Yes, thank you
My mind is blown!! This was so helpful!! Thank you!
You are so welcome! So glad you found my site."the most popular site online to learn sudoku" Please share with others, give me a thumbs up below the video, and subscribe and click the bell by the subscribe button. By doing so you will be notified by youtube when I upload a new video. (It’s FREE) Have fun as you learn step by step how to solve. Below is my home page with all the videos listed. ua-cam.com/users/sudokuguy
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Matching pairs!!! That is my missing link!! Thank you!
You're so welcome! matching pairs are very important to spot in all puzzles. So glad you found my site."the most popular site online to learn sudoku" Please share with others, subscribe and click the bell by the subscribe button. Have fun as you learn step by step how to solve. For a list of videos go here:
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Wonderful video as usual.. I’m learning a lot .. thank u ..👊🏽🔥🔥
Hi Kim. thanks for your encouragement. So glad you found my site."the most popular site online to learn sudoku" Please share with others, subscribe and click the bell by the subscribe button. Have fun as you learn step by step how to solve.You will find all my videos here
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I taught myself how to play while I was at work one day and bored. My coworkers asked what I was doing and they thought I was an absolute genius to be able to figure out how to play, boy have I got them fooled!! It's not that hard, but you have to concentrate. I need a quiet space when I play
All the best paula as you continue to learn more by watching the videos. So glad you found my site. “the most popular site online to learn sudoku” Please share with others, subscribe and click the bell by the subscribe button. Have fun as you learn step by step to solve. You will find all of my videos below.
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thanks so much for demystifying this puzzle., are their other techniques or is this it?
Yes there are however, I have found this technique is very valuable for advanced puzzles.
Hi Robin. That was great to watch even if I was shouting out "you missed one over there" the system worked and you got there in the end (which is a valuable lesson in itself). There is a fine line between having just a few numbers in a cell and lots and it can get quite confusing but having a systematic method does help. I am still trying to learn how to spot xy wings as they can be the difference between cracking the puzzle or just going round in circles.
Glad you enjoyed it! The task of only having 2 possibilities in and empty cell is very valuable. Spotting and XY wing requires 2 little number in a cell and this helps.
At around 22:20, you discovered that the 2 cells in the bottom right block can only be a 2 or 8. That's a matching pair! I know that since they are matching pairs, you can eliminate the other small numbers in those cells. What are the ramifications of that? LOL. I'm learning from your videos! You made me a subscriber. What are the ramifications of that? LOL again. Thanks!!!
Thank you Tinkering for your comment. If you continue looking at the solving process you will see what will happen. All the best. So glad you found my site."the most popular site online to learn sudoku" Please tell others, subscribe and click the bell by the subscribe button. Have fun as you learn step by step how to solve. You can view all of my videos here:
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It's a very clever pattern... woow
Watch the premier and after it I will talk about it if you wish. For details about the premier go to my channel page and pull down COMMUNITY TAB
Waiting for first video from Australia 🇦🇺. 🙏 Thanks
It's coming on Sat 19th from a Sydney quarantine hotel. See notification on COMMUNITY tab on my channel page. See below So glad you found my site. "The most popular site online to learn sudoku" Please share with others, subscribe and click the bell by the subscribe button. (It's FREE) Have fun as you learn step by step how to solve. Below is my home page with all the videos listed. ua-cam.com/channels/d8JaOdfEWcJOtwG6YayW0w.html ua-cam.com/users/sudokuguy www.sudokuguy.com
You're the best Sudoku teacher! :-)
Wow, thank you Sharon. I am now retired but teaching was my profession.So glad you found my site."the most popular site online to learn sudoku" Please share with others, give me a thumbs up below the video, and subscribe and click the bell by the subscribe button. By doing so you will be notified by youtube when I upload a new video. (It’s FREE) Have fun as you learn step by step how to solve. Below is my home page with all the videos listed. ua-cam.com/users/sudokuguy
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Good work Robin...
Thanks Jr Kunguru. So glad you found my site."the most popular site on line to learn sudoku" Please tell others, subscribe and click the bell by the subscribe button. Have fun as you learn step by step how to solve. You can view all of my videos here:
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Very excited you have done ! Thanks a lot you thought the.most difficultcult puzzles,not only that but it guided me to solve such a challenging ,thank you very much
Excellent! So glad you found my site. “the most popular site online to learn sudoku” Please share with others, subscribe and click the bell by the subscribe button. Have fun as you learn step by step to solve. You will find all of my videos below.
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Thank for a great Sudoku Video! Can you please do other difficult puzzles?
Sure thing Ross I do many of them from tutorial 79 onwards.
Thank you!
Hi Margaret. Hope you ar learning as you make your way through the videos. So glad you found my site."the most popular site online to learn sudoku" Please share with others, subscribe and click the bell by the subscribe button. Have fun as you learn step by step how to solve.You will find all my videos here
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Hope are settled in, and enjoying being home👍👍🍷🍷
I hope so too. We are now in a quarantine hotel in Sidney for 2 weeks!!!!
@@SudokuGuy oh no☹ not good, but one step closer to home👍👍🍷🍷🍷🍷
I m learning a lot👍👍👍👍👌👌👌
Glad to hear that. So glad you found my site. “the most popular site online to learn sudoku” Please share with others, subscribe (FREE) and click the bell by the subscribe button. Have fun as you learn step by step to solve. You will find all of my videos below.
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I usually fill out all possible numbers and you are right, it does create a mess at times. At about 22:00 block 9 and column 8 had combination of 3 locked in that block of 159. I use that to block out any other 159 in that column or block . But doing that may not have revealed the XY wing. I always miss the wings and get stuck. thanks.
Hi John thanks for your comment. Are you the Snyder who developed the snyder notation?
Thank you for this wonderful strategy. I love your instruction.
Blessings to you.👍♥️🎶
You are so welcome Kathleen. Blessing to you too. So glad you found my site. “the most popular site online to learn sudoku” Please share with others, subscribe and click the bell by the subscribe button. Have fun as you learn step by step to solve. You will find all of my videos below.
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Thank you. I love learning from you. I have a question . When you say you can eliminate 2's because there is a pair of 2's in a block (or 8's in line with a pair of eights) how do you know its not the other pair of 2's or 8's (in the same line in a different 3x3) that should be kept?
Hi Diane Please send your question to my email sudokuguy.com as I need help in understanding the min etc of your question.
Fantastic....learn something every time I watch your videos.
Glad to hear it! Hang in there Ken. there is lots to learn particularly with difficult puzzles.
the key to solving these hard puzzles....thanks
thanks Joe, Please look at tutorial # 82 and 83
BRAVOOOO!!!!
Gee thanks. You are on your way to enjoy solving. Locked little numbers is a special procedure that will help you solve harder puzzles. Hang in there. Robin
Awsome 🎉absolutely spellbinding 👌🏽👍🏽
( only cudnt figure out the XY factor)
Watch again and it may suddenly come to you. Hang in there. Locked little numbers are essential for very difficult puzzles.
Robin
Yes. Thank you
Thank you.
You're welcome!. So glad you found my site."the most popular site online to learn sudoku" Please share with others, give me a thumbs up below the video, and subscribe and click the bell by the subscribe button. By doing so you will be notified by youtube when I upload a new video. (It’s FREE) Have fun as you learn step by step how to solve. Below is my home page with all the videos listed. ua-cam.com/users/sudokuguy
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You are delightful 🎉
Oh thank you!
I missed your explanation for placing two fives vertically in the bottom right quadrant. The video jumps approximately at the 10 minute mark to magically place the fives vertically.
Hello congratulations....you are the first in over 15 million views to point this out. Yes I should not have put those 5s s in at that time. In fact that block had 3 small 5 possibilities. After putting all possible numbers in each empty cells, If you look further in the puzzle you will note that it works using locked little numbers.
Really nice video
Thanks a lot Robin
Thanks!
No problem! and Thanks to you for your support. So glad you found my site. “the most popular site online to learn sudoku” Please share with others, subscribe (FREE) and click the bell by the subscribe button. Have fun as you learn step by step to solve. You will find all of my videos below.
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Wow...I tried to solve on my own..but I couldn't.After seeing your video I got lots of idea...thanks a lot🤗
Most welcome 😊 Master the medium puzzles first.
@@SudokuGuy sure👍
Being a very rookie in sudoku I'm learning alot sir. Subscribed your channel.
Welcome aboard! So glad you found my site. “the most popular site online to learn sudoku” Please share with others, subscribe (FREE) and click the bell by the subscribe button. Have fun as you learn step by step to solve. You will find all of my videos below.
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Thank you so much the way you explained its just awesome haven't saw someone to teach something like this with so much love just love the way you explained it❤
So nice of you Akash. So glad you found my site. “the most popular site online to learn sudoku” Please share with others, subscribe (FREE) and click the bell by the subscribe button. Have fun as you learn step by step to solve. You will find all of my videos below.
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This guy is blowing my mind.
So glad you found my site."the most popular site online to learn sudoku" Please share with others, give me a thumbs up below the video, and subscribe and click the bell by the subscribe button. By doing so you will be notified by youtube when I upload a new video. (It’s FREE) Have fun as you learn step by step how to solve. Below is my home page with all the videos listed. ua-cam.com/users/sudokuguy
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I have encountered several Sudoku Puzzles where I input all of the little numbers. Then, eliminated those which were disproven. Getting to a place where I have not solved the entire puzzle, though have used every trick I know.
Hi Nicoles, looking at this tutorial I hope gave you learnt some hints on how to go about removing little numbers. If you go to my channel page ua-cam.com/users/sudokuguy and scroll down you will come to a playlist showing all kinds of puzzles whee I show ways to remove small numbers. Hang in there...with practice and knowing what to look for will help.
First proper (tricky) full puzzle I've tried to follow with you. I matched you for about 8 minutes (!) then missed one or two small numbers. The video jumps at about 10:10 and then two 5s appear magically in block 9 - please can you explain why there can't additionally be a 5 in column 9 in that block, please ) ?! In terms of column 8, there could be a 5 in block 3.
See comment below re the 5's. Sorry!
I enjoyed this puzzle solving. Thanks
You are welcome!. So glad you found my site."the most popular site online to learn sudoku" Please share with others, give me a thumbs up below the video, and subscribe and click the bell by the subscribe button. By doing so you will be notified by youtube when I upload a new video. (It’s FREE) Have fun as you learn step by step how to solve. Below is my home page with all the videos listed. ua-cam.com/users/sudokuguy
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That's great! Thank you so much. Greeting from Bavaria 🥨
Thank you! Cheers! Please tell other about Sudoku Guy Have them start here.
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Robin
Easy way to look at it is there's a 382 triple in box 1 (top left) which forces a 69 pair and the 1 in the middle. Then there's a 28 pair in box 9 (bottom right) caused by the 2 and the 8 higher up in column second from the end. This also gives you a 951 triple in the same box.
Well done Thank you for your comment. There is more than one way to cook and egg!
from the off I spotted the second row of 8-3-2 that filled the top left grid leaving 1-6-9 in the middle of the grid, in turn allowing 4-5-7 to be located in the second row.
Congratulations. Yes there are several paths to take and so much depend on what you know and when you spot it. Thanks for sharing.
I would appreciate you sending me your logic by sending me the puzzles showing how you came to your conclusion. Send it to support@sudokuguy.com
23.50 You say there´s two nines in a column and in a block and therefore you can get rid of all the other nines in that column. But in the third block there are also two nines in a column. So it´s the same prerequisites. How can you know which nines to remove?
If you have a locked 9s in one block and one column then other 9's in that column can be removed., because in block 9 there must be a 9 in the column which has 9s.
@@SudokuGuy This is not CLEAR. When two boxes have a possible two matching Pair in them, as shown in the video (23:50), how should one choose the correct box (with the 9's pairs)? Rule of Exclusion? I have been Stopped many times by not selecting the Correct Pair. Will you do a quick lesson on this topic?
@@SudokuGuy This is still not clear. If you start in box 3 then you see two nines in a column and therefore you should remove the two nines in box nine. I can+t understand how you can be so sure of what nines to remove.
@@SudokuGuy Now I understand, the nines in the third block isn´t alone, there are many nines in that block. Thanks!
That was fun! Thanks
Glad you enjoyed it Kay. So glad you found my site. “the most popular site online to learn sudoku” Please share with others, subscribe and click the bell by the subscribe button.Have fun as you learn step by step to solve. You will find all of my videos below.
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At 39:22 you pointed into a cell and says if that cell is a 2 then the low right corner is a 9 ( which i disagree with) please look into the middle top block what will happen after assuming the cell is 2
Sorry you don't understand, keep looking at the rest of the puzzle and you see discover whether it is a 2 or not.
I wondered if there were some other techniques, after the snyder notation was completed, to apply on a hard puzzle, SHORT of pencilling in all the little candidate numbers.
Unfortunately, the really difficult puzzles can be solved only when you have finally (got stuck) From tutorial #97 onwards you learn the value of entering all possible small numbers All the best. Robin
Amazing 😎😍
Thanks 🤗 So glad you found my site."the most popular site online to learn sudoku" Please share with others, give me a thumbs up below the video, and subscribe and click the bell by the subscribe button. By doing so you will be notified by youtube when I upload a new video. (It’s FREE) Have fun as you learn step by step how to solve. Below is my home page with all the videos listed. ua-cam.com/users/sudokuguy
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At the 10:14 mark you added two little 5s the the bottom right block. There was a cut in the video that never explained how you deducted that.
See comment below Sorry about the 5's.
Thanks sir , you teached me lot , I have a sudoku competition tomorrow.
All the best. stay calm and it will be a great experience.
My teacher gave the puzzle wrong , I gave that puzzle many hours but ,I can't solve , my mother , father worked hard but they also failed. 😥😭
Thanks sir , you replied to my comment
Locked little numbers 🔢: very VERY useful strategy! Thanks for the clear tutorial ☺️
Glad it was helpful! Please share with others. Robin
when you were looking at block nine with the two twos in the row (21 minute mark). how do you know the twos has to be in block nine? block seven has two twos in a row which could be used to eliminate the twos in block nine.
Good Question viet. Block 9 MUST have a 2 and there are 2 2's in the block which are also part of a row. ONE of them must be a 2. Look at the end of the puzzle and you will see that one of those 2's is a 2. Hope this helps; Watch it again if that helps/
@@SudokuGuy can the same logic be applied to block seven?
@@SudokuGuy oh I get it. Thanks for your help!!!
An amazing work. Love it.
thank Michal....Look at the tutorials 83,84,85 86 they all cover the locked litte number technique.
Is it a matching pair with 2s and 8s in the bottom right block? Shouldn't you remove the 1s and a 5 that are in the same cells as the matching pair?
Sorry no as there are several other ones in that block. I was hoping that you had spotted a hidden matching pair, but no.
@@SudokuGuy I just cant help but see a matching pair in that block. You can see it before you write the little numbers on the rest of the board. Pause at 14:44 and try to find where 2 and 8 can go in the bottom right block. 😊
There's a 2 and an 8 in c8 so they both have to go in r8.
Sir, Mr. Sudoku Guy, you are an amazing teacher, with abundant amount of patience. 🙏🙏 . One question though: how did you identify the pivot when the whole puzzle has so many little numbers and how did you spot the “ pivot” situation going on that part of the puzzle? That is what puzzling to me.
Good question It comes to knowing what to look for and practice. Yes I find them difficult to spot, but when the puzzles starts to have a lot of bivalue cells, that is when i start looking for this type of pattern. Finding the picot means taking 2 numbers in a cell and searching for how it doesn't matter which number is true the cell which can see both ends of the clock hands (pincers) must not have a 9. Hope this helps hang in there.
Mr. Sudoku Man, I am also struggling to solve Puzzle #79, and wonder if it possible to solve it without using the XY Wing technique? I haven't figured out how to recognize it!
Thank you. This has helped me enormously. Thanks for the time and effort you put into these tutorials.
Glad it helped Julie ISo glad you found my site. “the most popular site online to learn sudoku” Please share with others, subscribe and click the bell by the subscribe button. Have fun as you learn step by step to solve. You will find all of my videos below.
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@@SudokuGuy Thank you. I hope it's ok to ask a question. With the 2 or 3 single little numbers in a row or column - with a really hard puzzle - I have more than one lot. How do you know which ones to choose? tia.