Hey Guys. Just spotted something else. There's another little number, 5 in Row 8, making it three 5s in that particular Row - R8C2, R8C5, and R8C8. However, only the little 5 in R8C2 sees both endpoints R3C2 and R8C5! We can therefore only eliminate the little 5 in R8C2 as done by Sudoku Guy in the video! Up to this stage we don't know whether R8C5 or R8C8 is the correct 5. In either case, R8C2 cannot be a 5, and hence can be eliminated! Awesome, Sudoku Guy. Thanks for teaching me this. Can't wait to start seeing these strong and weak links techniques in my subsequent solves!
Shehu thanks for your feedback. So glad you found my site,” the most popular site on line 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 can find all of my videos by clicking on the link below. ru-vid.com/show-UCd8JaOdfEWcJOtwG6YayW0w ru-vid.com
I’ve been following your channel for almost 3 years now, and I wanted to thank you for your awesome tutorials. I consider myself good at playing sudoku, but now I’m seeking to learn advanced techniques. I’ll be looking forward to enjoying this new video!
Its' great that you wish to advance. Just know that as you reach the more difficult puzzles you will need to know many tricks and techniques many of w'hich I have covered and will cover.
Good lesson! I would add to make this clearer that a strong link can also be used as a weak link. That might be helpful to point out and clear up possible questions. Thanks to the Sudoku Swami for his lesson on this, which is very good also.
Nowadays I feel confident of solving medium puzzles but hard/tough ones troubles me. I also found that relaxed mind is key to solve. Thank u sir for ur tutorials.
Thanks for sharing Ramdas.This tutorial was more for advanced players. So glad you found my site."the most popular site on line to learn sudoku" Please tell others and 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: ru-vid.com/show-UCd8JaOdfEWcJOtwG6YayW0w
Hi, grandpa Robin! I never heard people using strong and weak links. That's pretty cool. I just love your sense of humor and facial expressions. Creative Math with Ching-Hui 😉🙃😊
Hi S that's great that you learnt that there is lots to learn. Hang in there S and master the easier puzzles first. U can do it!. So glad you found my site."the most popular site on line to learn sudoku" Please tell others and 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: ru-vid.com/show-UCd8JaOdfEWcJOtwG6YayW0w
Glad it was helpful! You are not the first person to mention this. Thanks. So glad you found my site."the most popular site on line 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. ru-vid.com/show-UCd8JaOdfEWcJOtwG6YayW0w sudokuguy.com
Glad it was helpful Mike this is valuable for those who wish to solve advanced puzzles. So glad you found my site."the most popular site on line to learn sudoku" Please tell others and 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: ru-vid.com/show-UCd8JaOdfEWcJOtwG6YayW0w
Thank you so much, Sudoku Guy. Couldn't understand these strong/weak links before. Until now. Eagerly awaiting your next video(s) on same. The four little 5s in block 6 however, means that the link(s) between them should be weak and therefore, blue rather than red! Hope I'm correct.
Mr Robins, you are devising interesting useful Real Techniques to bank on in the wilderness of small numbers near the end of an expert level sudoku puzzle solution. Much better way to give the finish than to make guesstimates in frustration. Big thumps up and thanks again for easy to understand explanations...
Wow, thanks r g. You have made my day! So glad you found my site,” the most popular site on line 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 can find all of my videos by clicking on the link below. ru-vid.com/show-UCd8JaOdfEWcJOtwG6YayW0w ru-vid.com
@@SudokuGuy Sir, already subscribed couple of months ago. Also, tell my friends learned sudoku from scratch from your site. Thanks ..Rajeev Gupta, Mumbai
Hi! I used to play Sudoku when I was a kid and I don't really understand it, tho I feel really happy the when I solved it (by checking every time I put a number 1-9 HAHA)now I enjoy it more because I understand how to answer it thanks to your tutorial, its easy to follow, to understand and will hook u up to play sudoku again and playing is really addicting ♡♡♡ Thank you! Hope you're having a great day.
That's great! rocket. Yes it can be addictive. So glad you found my site."the most popular site on line to learn sudoku" Please tell others and 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: ru-vid.com/show-UCd8JaOdfEWcJOtwG6YayW0w
Thank you Sudoku guy! This is a hard topic for me to wrap my brain around but I am trying and I am going to watch this video again and maybe some of it will sink in? I don't understand the concept of weak links. I understand what they are but how can they bring you to a correct conclusion? Good job in your explanation of it.
Thanks for your comment. I made a mistake and mentioned in the description under the video. The diagonal line in block 6 should be blue not red. Keep watching the next few tutorials and I hope you will understand the difference quickly. You will see this info in the description under the video Look for SHOW MORE Robin
Missed information: every StrongLink relation can be used as a WeakLink to build a chain. This is because a WeakLink needs TWO (or more) candidate cells in a row/column/box (i.e. in a house).
Hello Robin. Thanks for your Tutorials. A note about this one : In column 5 there are 2 Cells shown unresolved. By definition they should be a 'matching pair'. They are notated as 4,5 and 2,5 so the notation is incorrect. As there is already a digit 4 in column 5, starting the chain at the 5 in R8C5 is invalid because the value of that cell is 2. Regards and Stay well.
❤😄😍 Gee thanks! Veer. So glad you found my site,” the most popular site on line 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 can find all of my videos by clicking on the link below. ru-vid.com/show-UCd8JaOdfEWcJOtwG6YayW0w ru-vid.com
Hello, for a long time we did not see you. Perhaps you are fine, a good return. Thank you for continuing to give you beautiful solutions to the Sudoku puzzle. Greetings, one of the channel's friends and Sudoku fans.
Happy to help. So glad you found my site."the most popular site on line to learn sudoku" Please tell others and 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: ru-vid.com/show-UCd8JaOdfEWcJOtwG6YayW0w
You are so welcome! So glad you found my site,” the most popular site on line 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 can find all of my videos by clicking on the link below. ru-vid.com/show-UCd8JaOdfEWcJOtwG6YayW0w ru-vid.com
Glad you think so! So glad you found my site."the most popular site on line to learn sudoku" Please tell others and 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: ru-vid.com/show-UCd8JaOdfEWcJOtwG6YayW0w
Thanks Will. And 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: ru-vid.com/show-UCd8JaOdfEWcJOtwG6YayW0w sudokuguy.com
Thanks for the visit. So glad you found my site."the most popular site on line to learn sudoku" Please tell others and 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: ru-vid.com/show-UCd8JaOdfEWcJOtwG6YayW0w
As long as they are in line with each other? I hope I have understood your question. Look at other tutorials involving strong and weak links There are many from tutorial 65 and above. Robin
@@SudokuGuy I said within the box (you say block) ...meaning by definition (only two little numbers in the block) the 5s in block 5 only, if connected would be a strong link by definition. A connection of either 5 in block 5 to any of the 5s in block two would be weak links because then the column is involved and there are more than two 5s in the column. But it seems now that just being the only two 5s in block 5 is not enough to make them a strong link if they are also within a column that has additional 5s. Is that right? That wasn't clear from the definitions. After studying the definitions of strong links and weak links, I understand that the link between the two fives in either block three, four or five is a strong link, because if one of the cells is not a five then the other cell must be a five. The strong link can also be a weak link because if one cell is a five then the other cannot be a five. So a strong link can also be a weak link, but a weak link can only be a weak link.
Glad to hear that! Vanessa. There are many more tutorials on links coming. So glad you found my site."the most popular site on line 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. ru-vid.com/show-UCd8JaOdfEWcJOtwG6YayW0w ru-vid.com www.sudokuguy.com
So glad you found my site."the most popular site on line to learn sudoku" Please tell others and 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: ru-vid.com/show-UCd8JaOdfEWcJOtwG6YayW0w
Wonderful tutorial Sodoku Guy! At 3:26 of the video you show two weak links, for the 3 5s that are in column 5. Shouldn't the link between the two 5s that reside in block 5 really be considered a strong link? I realize that a strong link may be treated as a weak link for inference purposes, but technically is seems like a strong link? Thanks again for your great content!
Hi Richard, I talk more about your comment in another tutorial coming. Thanks for your comment. So glad you found my site."the most popular site on line to learn sudoku" Please tell others and 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: ru-vid.com/show-UCd8JaOdfEWcJOtwG6YayW0w
Glad you liked it tglrod. So glad you found my site."the most popular site on line to learn sudoku" Please tell others. Have fun as you learn step by step how to solve. You can view all of my videos here: ru-vid.com/show-UCd8JaOdfEWcJOtwG6YayW0w
Hi Paul Strong links or conjugate pairs are the same and are essential for spotting many advanced patterns including the skyscraper, x chain, 2 string kites, X wing, swordfish, turbo fish, finned x wing, empty rectangles and w wings. Some of these I have not covered yet. Please keep watching. Have fun as you learn these and spot them.
???? 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: ru-vid.com/show-UCd8JaOdfEWcJOtwG6YayW0w
The explanation is not accurate - it is backwards. It should go "If one end of the chain is not a 5 then the other end must be a five". That way you can follow a chain of alternating strong and weak links (and the weak link can also be a strong link). In other words, if one end of a any link is a five, the other end cannot be a five, and if the end of a strong link is not a five, the other end must be a five are the facts you use.
@@SudokuGuy You are welcome. BTW your video is practically useful. With a chain of strong links, I like to color the boxes alternately red and blue, knowing that anything that sees both colors cannot be the same number. Also, I will note that an X wing is a special case of the alternating strong/weak link structure that you describe.
Absolutely NOT. Sudoku is good for many things your brain, your memory, your logical thinking, enjoyment, satisfaction and leisure activity particularly during the epidemic. 8.5 million views and 60,000 subs says something. So glad you found my site,” the most popular site on line to learn sudoku" I see you have been looking at advanced tutorials. I suggest you start learning by going to the link below which takes you step by step from not knowing anything to the advanced levels 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 can find all of my videos by clicking on the link below. ru-vid.com/show-UCd8JaOdfEWcJOtwG6YayW0w ru-vid.com
The trick here is to visualize the options: Whenever exists a line or block with two (strong) or more (weak) links, only one of them can have the number. When we analize a chain of links made according the rules, only one of its ends will always be correct. This is always true. Then a cell aligned with both ends cannot contain the number, because in that case the rule will be false and we confirmed it is always true. The lines he draw were to show the situation; in a actual puzzle you don't draw them, only imagine them, and check the possibilities to discard some cell. That's is the difficult part...
