I never knew sudoku was such interesting until I came across your tutorial just for a time pass. Guess what- I completed almost 20 in 2 days. I should say that you are an incredible teacher with real passion. Thank you Sir!
Cher...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. (It’s FREE) Have fun as you learn step by step how to solve. Below is my home page with all the videos listed. th-cam.com/channels/d8JaOdfEWcJOtwG6YayW0w.html
I'm so glad!. 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: th-cam.com/channels/d8JaOdfEWcJOtwG6YayW0w.html
I only took up soduku about three months ago. Without your excellent videos I'd still be wandering about in a dense fog blindfolded. Thanks to you I have one eye open and I continue to watch you with hopes of opening the other eventually.
Great to hear James. 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. sudokuguy.com th-cam.com/users/sudokuguy
You're very welcome! 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: th-cam.com/channels/d8JaOdfEWcJOtwG6YayW0w.html sudokuguy.com
Wow, thank you! 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: th-cam.com/channels/d8JaOdfEWcJOtwG6YayW0w.html sudokuguy.com
Great to hear.priscilla. There is much to learn 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. For a list of videos go here: th-cam.com/channels/d8JaOdfEWcJOtwG6YayW0w.html
I love your videos. Your videos are the only videos that are understandable, and also fun to learn. Even at this age you're still teaching us. Love from Ieyshan ❤️❤️❤️
HI Tom, It's interesting how just one technique or pattern or trick you spot it often will take you to end of the puzzle. this makes it very satisfying. With hard puzzles so much depends on what you know and what you can spot and when.
Thanks again for your brilliant lessons you are so patient and thorough , before discovering your tuition I had only attempted moderate puzzles which took me ages and often unfinished, within a week I am now solving intricate puzzles! although it takes an average of 40 minutes but I am speeding up!
You are very welcome Hasan. 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. th-cam.com/channels/d8JaOdfEWcJOtwG6YayW0w.html
Wow, thank you! God Bless You too. These patterns are helpful and once you have learnt to spot them they will help a lot. Go to my web site and scroll down and you will see other tutorials involving these patterns. 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. th-cam.com/channels/d8JaOdfEWcJOtwG6YayW0w.html th-cam.com/users/sudokuguy www.sudokuguy.com
Thanks. It's great to spot these as they help you solve. 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: th-cam.com/channels/d8JaOdfEWcJOtwG6YayW0w.html sudokuguy.com Robin
Very nice.... There is an unstated policy here though that probably should be stated: this works ONLY when the notes (little numbers) represent the ONLY candidates for those numbers. In other words, it allows us to make the conclusion that a certain number is definitely going to be IN A CERTAIN ROW OR COLUMN for a set of 3 adjacent blocks. (Alternately, as you showed in the puzzle, REAL numbers [big numbers] also enable us to make these conclusions.) This is like chess.... when you know the patterns to look for, they start jumping out at you.... :-) Thanks for sharing this! Excellent stuff.
The policy does not need to be stated, because in the first place, the rule about using little numbers is that you can only use them if they can only go in two cells within a block. If your little numbers are not restricted to those cells, then you are obviously using them incorrectly.
Congratulations Robert, 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. th-cam.com/channels/d8JaOdfEWcJOtwG6YayW0w.html
Thanks for watching! 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. th-cam.com/channels/d8JaOdfEWcJOtwG6YayW0w.html
Oh thanx 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. sudokuguy.com th-cam.com/users/sudokuguy
you probably dont care at all but does any of you know of a way to log back into an Instagram account..? I was stupid forgot the login password. I love any tips you can offer me!
@Markus Alexzander I really appreciate your reply. I got to the site through google and I'm waiting for the hacking stuff now. Looks like it's gonna take quite some time so I will get back to you later when my account password hopefully is recovered.
Question! Robin I love your teaching style!!! I am learning so much. I have wanted more practice and it occurred to me that I make more puzzles by exchanging the entire top row of blocks with say the middle row of blocks and the same with the columns. It interests me to see what happens to the techniques that can be applied. Have you ever tested this idea out? If it works it would give us additional examples for practice and possible alternate techniques. I am testing this theory out beginning with the easiest but I wanted to ask you about this. Thanks for great lessons.
i have learned how to do sudoku puzzles from you. i love your methodical and friendly presentation. do you know that sometimes your position in front of the puzzle is blocking one third of the puzzle from the viewer. i know this comment is late, because the videos re already made. but for the future....still...i have learnt everything i know about these puzzles from you. thank you thank you.
Sir, very nice indeed. Can we generalise as follows: Same three small numbers can not be either in a row or in a column... OR Same small numbers can at max be at two places in a row or in a column...
At the beginning of solving aim for only 2 small numbers in a cell. the time may come with hard puzzles that you may have to add more possible numbers in a cell.
The cleaver and mallet pattern occur often in advanced puzzles. Spotting them is the key. Next Feb I will be uploading a puzzle with 2 cleavers, and 1 mallet. These can make a big difference in the speed you solve as well not becoming stuck.
Sudoku Guy I have been diligently following your lessons and this one felt like a ‘big jump’ haha. My plan is to watch this a few times before proceeding to the next one. This lesson has also taught me to ensure that I put into only 2 numbers (max) in each cell (at least for now). Thanks again!
Great lessons. But for this one I have the same problems as some of the comments below. At time 5:20, you say *if* but they are small 5/8 numbers. Should they be big numbers for this logic to work?
First Robin, I must thank you for teaching me how to do Sudoku in a straightforward fashion. I'm a little confused about the cleaver. When you show the shape of the blade you show that there are four numbers the same in the two adjacent blocks. do these numbers have to be in same position of the same two blocks? In other words could you have the two numbers in the top row of the first block and then the two numbers say in the middle row of the second block? Secondly, you are a very good teacher. Were you a professor of some sort in one of your previous careers? Keep up the great work and thanks very much!
Hi Marisa, There are many directions a cleaver can be spotted. In all cases the blade takes up 2 blocks. As long as the numbers in the blade are located in the 2 columns or rows but not in the row or column of the handle they can be a cleaver. Look at tutorials on the cleaver. As you advance you will spot many cleavers.
in these examples, are the little numbers that are in each box meant to be the ONLY cells in that box where those little numbers are possible (in other words, is that a requirement for these patterns to work?) Another question (which is kind of similar-but-opposite compared to the first question 😅)...looking at your mallet example: would anything be affected if the top right cell in the Middle Center Box had a little 5 AND another little number in it (for example, if it had a little 5 and a little 1 instead of only a little 5)? thanks!
Hello fiercegear..... Not knowing which lesson or tutorial you are talking about I hope I can answer your question.The little numbers in each cell are the only possible numbers which can go there. As you go further in the puzzle some of these will be eliminated and you will finish up with only one number which will be the big number. I strongly suggest you go to the link below which lists all the tutorials and lessons in order Master the video numbers from 1-12 first. 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: th-cam.com/channels/d8JaOdfEWcJOtwG6YayW0w.html
Hi I suggest when you look at a new video take down the original numbers and try it yourself, then watch me solve it.. There are many paths you could take and so much depends on what you know , what you spot and when.
At 12:43, if 3 and 6 were not there (i.e., if both cells were empty), would the number 4 still in the middle? If so, could you please explain the logic? Thanks!
Yes it would still be in the middle because of the rule of TMB It may not be in that spot, but it will be in row 2 cell 4,5 or 6. I suggest you go to my channel page to understand lesson 1 where I explain the TMB rule You will find it here : th-cam.com/video/ckdwhm7GM94/w-d-xo.html and here : th-cam.com/channels/d8JaOdfEWcJOtwG6YayW0w.html Hope this helps Robin
@@SudokuGuy I think they meant center. Of course it will be in the middle, but you only know it goes in the center because of the 3 and 6, right? It doesn't have to middle center?
sorry NO. Because tmb and LCr wont' work. 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. th-cam.com/channels/d8JaOdfEWcJOtwG6YayW0w.html
Hi Robin. How did you make a diagonal out of 4s in the 3rd vertical block. Aren't they (the small 4s in the bottom most block) supposed to be evenly spaced like the 4s in the top right most block ?
The 4s as I mentioned at the end of the videos can be anywhere in row 3 block 3 and and and where in row 1 block 3. IThe diagonal cross pattern will still apply. Hope this helps and I hope I understand what you are asking.
That's exciting isn't it?. Discovering a new technique is fun. All the best as you continue in your quest to solve. Please subscribe and share with others. It's free.
Sorry Yu NO. A mallet is always found in 3 blocks, horizontal or vertical. 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. th-cam.com/channels/d8JaOdfEWcJOtwG6YayW0w.html th-cam.com/users/sudokuguy
Question: Watching Lesson 20 I can't help wondering if the cleaver, mallet, table, and diagonal cross would be found earlier and easier using using LCR/TMB? Thanks, Darren Clark, Avid Sudoku Guy watcher and teacher from Edmonton, Alberta, Canada.
HI Darren, I don't think so. Spotting the pattern has to happen first. Learning to spot and keep an eye out for these patterns helps me. Then LCR and TMB takes over. Watch the video I am uploading on tues. It is being premiered. tutorial #58
Darren Clark There are many moments in a puzzle in which the only way to place a particular digit somewhere, or at least restrict it to a row or column within a block, is by using one of these four X-wing, because you would not be able to using TMB-LCR.
I agree Darren. Apart from the cross, the rest could be found with the LCR/TMB technique. Adding cleavers, mallets and tables just makes it confusing. Keep it simple.
Spotting a cleaver really helps.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. For a list of all videos see below th-cam.com/channels/d8JaOdfEWcJOtwG6YayW0w.html th-cam.com/users/sudokuguy www.sudokuguy.com
A bit of confusing part in cleaver and table.. when u changes the position of small numbers in blade of cleaver and legs of table there is no 2nd position of that small number is the box .. so u r assuming that the 2nd position of that small number should be in the blade or the legs of the table .. hope u get my point.
ubctbird65 hey slick, maja said sir and please. in my universe thats pretty courteous. i appreciate Sudoku Guy 's slow pace because this is a logic puzzle. but i also share the sense that these are VERY basic techniques given different names and these videos can be very tedious. keep your finger wagging to yourself. stop getting upset for other people, especially when youre mistaken.
TheSeeohhdee *stop getting upset for other people, especially when you're mistaken* You're a hypocrite. You say this *even though* you're definitely upset and are also mistaken, because as stated, these are not renamings of basic techniques, thess are advanced techniques. Using LCR-TMB or matching tuples alone cannot produce an X-wing without applying bifurcation or further logic that makes it more advanced. If you get the impression that this is not true, then you are wrong. It is that simple. Sudoku is logic, and logic is objective. You do not simply get to decide whether a technique is equivalent to another or not. Different game-theoretic theorems exist for each technique, and they are applied differently in different puzzles. Before you go off giving lectures to people, make sure you are not being an uninformed hypocrite next time, capisce?
It depends on how many procedures, tricks and patterns you spot. It takes longer if you put all the small possible numbers in yourself. For me it can take 30 -40 mins for the very difficult. levels. Practice helps to speed things up. You get great satisfaction when you can solve the very difficult puzzles. Have fun.
Your videos are amazing; they have been so incredibly helpful. A ‘small’ suggestion: could you please stand in such a way that the puzzle is clearly visible most of the time (to the far left)? I realize it’s tricky when you have to point things out and write stuff, but it helps us learners see the patterns that you are referring to more easily. Thank you:)
Good on ya Dounia. 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. 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. th-cam.com/channels/d8JaOdfEWcJOtwG6YayW0w.html th-cam.com/users/sudokuguy www.sudokuguy.com
+CHANDRA SEKHAR Hi Chandra, As I am not a programmer, I can't say, however sudoku definately helps brain fitness, and memory as well as logic. Memory is required to remember all the different techniques and tricks, and also if you wish to go faster and not put all the pencil marks in and outside the puzzle.
Hello Flory. NO I am not . In fact I was terrible at maths in school. However this is all to do with logic. 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. sudokuguy.com th-cam.com/users/sudokuguy
+Lindsay Johnston Well done. Lindsay. You are right in that an 8 goes in cell 2. I was pointing out the pattern known as a diagonal cross using 4's. If I was going to go on with the puzzle that would have been solved, however I was purely demonstrating the patterns in this puzzle to watch for. Hang in there. If you are up to lesson 20 you are doing well.
Essentially, a four there would lead to a contradiction. But that's also true for a four in #7. So the puzzle was clearly made up to show off this technique.
Well done Emine. Keep learning as there is much to learn. 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. th-cam.com/channels/d8JaOdfEWcJOtwG6YayW0w.html
I found this lesson to be very confusing. You did not explain why you have used both empty cells and numbered cells to make the cleaver. If it doesn’t matter, then cleavers are virtually all over the board. Same for the mallet. Also, it would help if the red template was drawn to scale.
Thank you Minna.. I suggest you look at the video again and I am sure it will help you to understand better. All these patterns are helpful when you spot them. I cover these in many more tutorials. If you go to my website sudokuguy.com and scroll down to the index of strategies you will find all the tutorials etc which cover these patterns and hopefully you will see the value of spotting them. All the best. Robin
It can e found in any block and in any direction. I't a matter of spotting it. Hang in there, with practise you will start to see them more often. 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: th-cam.com/channels/d8JaOdfEWcJOtwG6YayW0w.html
Only in a limited way. Tomas. The pattern is very different from and x wing as an x wing usually take up 4 blocks. The cleaver and mallet both have only 3 blocks. 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. th-cam.com/channels/d8JaOdfEWcJOtwG6YayW0w.html th-cam.com/users/sudokuguy www.sudokuguy.com
Don't think this is explained clearly or am I the only one who don't understand? What if the 3rd row which is supposed to be populated also allows for the number, that would make it impossible to adopt this strategy.
Sorry maximus, but you seem to be the only one having a problem. this is not a puzzle but a demonstration of patterns. 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. th-cam.com/users/sudokuguy
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. The link below will take you to all of my videos from easy to difficult. th-cam.com/channels/d8JaOdfEWcJOtwG6YayW0w.html
I see you are watching the videos in order...that's good. Have you watched video from 1 -25? 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: th-cam.com/channels/d8JaOdfEWcJOtwG6YayW0w.html sudokuguy.com
ok, cool, so your saying that all the technique and the example can be shown in less than 2 minutes? Plus, if he did a 2 minute video, its way too short o understand everything
You are right. In many of the lessons and toutorials I mention this. When you reach the very advanced level you will need an excellent memory. All the best when you reach the really tough puzzles.
I have been looking for a good explanation of these patterns and you are the first person to clearly explain them. Thank you.
Glad it was helpful! Hang in there Mark. with practice and knowledge of tricks you can do well.
I never knew sudoku was such interesting until I came across your tutorial just for a time pass. Guess what- I completed almost 20 in 2 days. I should say that you are an incredible teacher with real passion. Thank you Sir!
Great to hear! Boy! you must be at home a lot. Thanks for your comment.
You are the best Sudoku guy.....you make the puzzles come alive. I love, love your tutorials!
Cher...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. (It’s FREE) Have fun as you learn step by step how to solve. Below is my home page with all the videos listed.
th-cam.com/channels/d8JaOdfEWcJOtwG6YayW0w.html
Thank you so much for your very clear tutorials! Both my husband & I watch them, and we've gotten hooked on sudoku!
I'm so glad!.
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:
th-cam.com/channels/d8JaOdfEWcJOtwG6YayW0w.html
I love these videos! I would not have learned sudoku without these. .
Glad you like them!
Your cut-outs and outlines effectively illustrate the formations. Thank you for your teaching methods and techniques.
Thanks for watching!
I only took up soduku about three months ago. Without your excellent videos I'd still be wandering about in a dense fog blindfolded. Thanks to you I have one eye open and I continue to watch you with hopes of opening the other eventually.
Great to hear James. 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.
sudokuguy.com
th-cam.com/users/sudokuguy
This is a masterful piece of teaching representing concepts to date in the series. Thank you so much for these videos!!!!
You're very welcome! 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:
th-cam.com/channels/d8JaOdfEWcJOtwG6YayW0w.html
sudokuguy.com
You're not only a excellent teacher but also a good artist
Gee thanks You are a gem!
a great teacher.. slow and reoetive for beginners I love him!!
Wow, thank you! 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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sudokuguy.com
As I’m taking on more challenging puzzles your videos have been a lifesaver!
Great to hear.priscilla. There is much to learn 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. For a list of videos go here:
th-cam.com/channels/d8JaOdfEWcJOtwG6YayW0w.html
I love your videos. Your videos are the only videos that are understandable, and also fun to learn. Even at this age you're still teaching us. Love from Ieyshan ❤️❤️❤️
Wow, thank you! Leshan.
@@SudokuGuy You're welcome Mr. Robin
The diagonal cross did it for me on this hard puzzle I have been working on for a long time. Thanks
HI Tom, It's interesting how just one technique or pattern or trick you spot it often will take you to end of the puzzle. this makes it very satisfying. With hard puzzles so much depends on what you know and what you can spot and when.
Thanks again for your brilliant lessons you are so patient and thorough , before discovering your tuition I had only attempted moderate puzzles which took me ages and often unfinished, within a week I am now solving intricate puzzles! although it takes an average of 40 minutes but I am speeding up!
congratulations ken You can do it. Be carefull ...it is easy to become addicted.
You are a great master of teaching, thank you!
You are very welcome Hasan. 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.
th-cam.com/channels/d8JaOdfEWcJOtwG6YayW0w.html
You are such an amazing and clever teacher!!! God bless you.
Wow, thank you! God Bless You too. These patterns are helpful and once you have learnt to spot them they will help a lot. Go to my web site and scroll down and you will see other tutorials involving these patterns. 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.
th-cam.com/channels/d8JaOdfEWcJOtwG6YayW0w.html
th-cam.com/users/sudokuguy
www.sudokuguy.com
@@SudokuGuy Yes, sir!!! Of course, I´ll gladly follow your recommendations. Thank a lot!!!
Thank you - excellent lesson!
Thanks. It's great to spot these as they help you solve. 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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sudokuguy.com Robin
Very nice.... There is an unstated policy here though that probably should be stated: this works ONLY when the notes (little numbers) represent the ONLY candidates for those numbers. In other words, it allows us to make the conclusion that a certain number is definitely going to be IN A CERTAIN ROW OR COLUMN for a set of 3 adjacent blocks. (Alternately, as you showed in the puzzle, REAL numbers [big numbers] also enable us to make these conclusions.) This is like chess.... when you know the patterns to look for, they start jumping out at you.... :-) Thanks for sharing this! Excellent stuff.
Victor Wheeler Thanks Victor Recognizing patterns is essential. Spotting them can be difficult for some of us. It takes practise spotting them.
The policy does not need to be stated, because in the first place, the rule about using little numbers is that you can only use them if they can only go in two cells within a block. If your little numbers are not restricted to those cells, then you are obviously using them incorrectly.
After some false starts I found my first cleaver. I was so excited, had to show my wife!
Congratulations Robert, 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.
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Amazing techniques, Thanks Robin
Thanks for watching! 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.
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Yr principles r amazing ...
Oh thanx 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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Thanks for this lesson. Just wondering, did you cut your other tie to make the templates?
Love your sense of humor.
What a great teacher you are, Sir🙏🙏💐👍
Thanks Garden Bee. Teaching is my passion.
Yes
I am enjoying your very cool colour combination. This outfit suits you very well. It makes it a pleasure to see your videos because you dress so well.
Thanks for your comment!!!
you probably dont care at all but does any of you know of a way to log back into an Instagram account..?
I was stupid forgot the login password. I love any tips you can offer me!
@Alessandro Weston instablaster :)
@Markus Alexzander I really appreciate your reply. I got to the site through google and I'm waiting for the hacking stuff now.
Looks like it's gonna take quite some time so I will get back to you later when my account password hopefully is recovered.
@Markus Alexzander it did the trick and I actually got access to my account again. Im so happy:D
Thanks so much you really help me out !
Question! Robin I love your teaching style!!! I am learning so much. I have wanted more practice and it occurred to me that I make more puzzles by exchanging the entire top row of blocks with say the middle row of blocks and the same with the columns. It interests me to see what happens to the techniques that can be applied. Have you ever tested this idea out? If it works it would give us additional examples for practice and possible alternate techniques. I am testing this theory out beginning with the easiest but I wanted to ask you about this. Thanks for great lessons.
Have a look at tutorial 100. Thanks for your comment.
i have learned how to do sudoku puzzles from you. i love your methodical and friendly presentation. do you know that sometimes your position in front of the puzzle is blocking one third of the puzzle from the viewer. i know this comment is late, because the videos re already made. but for the future....still...i have learnt everything i know about these puzzles from you. thank you thank you.
You are right. I am now being more careful, and I can't afford to re do those where I stand in front too much. Thank you for your support.
Sir, very nice indeed. Can we generalise as follows:
Same three small numbers can not be either in a row or in a column...
OR
Same small numbers can at max be at two places in a row or in a column...
At the beginning of solving aim for only 2 small numbers in a cell. the time may come with hard puzzles that you may have to add more possible numbers in a cell.
That was such a cool trick! Thank you for being such an excellent teacher. Hopefully I will get to see more of these patterns on my own haha:)
The cleaver and mallet pattern occur often in advanced puzzles. Spotting them is the key. Next Feb I will be uploading a puzzle with 2 cleavers, and 1 mallet. These can make a big difference in the speed you solve as well not becoming stuck.
Sudoku Guy I have been diligently following your lessons and this one felt like a ‘big jump’ haha. My plan is to watch this a few times before proceeding to the next one. This lesson has also taught me to ensure that I put into only 2 numbers (max) in each cell (at least for now). Thanks again!
Great lessons. But for this one I have the same problems as some of the comments below. At time 5:20, you say *if* but they are small 5/8 numbers. Should they be big numbers for this logic to work?
It could be either a 5 or an 8. That is why I show them as small numbers. Robin
First Robin, I must thank you for teaching me how to do Sudoku in a straightforward fashion. I'm a little confused about the cleaver. When you show the shape of the blade you show that there are four numbers the same in the two adjacent blocks. do these numbers have to be in same position of the same two blocks? In other words could you have the two numbers in the top row of the first block and then the two numbers say in the middle row of the second block?
Secondly, you are a very good teacher. Were you a professor of some sort in one of your previous careers? Keep up the great work and thanks very much!
Hi Marisa,
There are many directions a cleaver can be spotted. In all cases the blade takes up 2 blocks. As long as the numbers in the blade are located in the 2 columns or rows but not in the row or column of the handle they can be a cleaver. Look at tutorials on the cleaver. As you advance you will spot many cleavers.
in these examples, are the little numbers that are in each box meant to be the ONLY cells in that box where those little numbers are possible (in other words, is that a requirement for these patterns to work?)
Another question (which is kind of similar-but-opposite compared to the first question 😅)...looking at your mallet example: would anything be affected if the top right cell in the Middle Center Box had a little 5 AND another little number in it (for example, if it had a little 5 and a little 1 instead of only a little 5)?
thanks!
Hello fiercegear..... Not knowing which lesson or tutorial you are talking about I hope I can answer your question.The little numbers in each cell are the only possible numbers which can go there. As you go further in the puzzle some of these will be eliminated and you will finish up with only one number which will be the big number.
I strongly suggest you go to the link below which lists all the tutorials and lessons in order Master the video numbers from 1-12 first.
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 like this one super
Wonderful. It is a matter of spotting them . Watch for these in tutorial list.
Hi Robin, Is there a way to get your puzzles on the video description or… for practice?
Hi I suggest when you look at a new video take down the original numbers and try it yourself, then watch me solve it.. There are many paths you could take and so much depends on what you know , what you spot and when.
@@SudokuGuy thanks Robin for the timeous response
You said the table can have fat legs or have crooked legs! That was a good hint.
Hang in there C Van.
At 12:43, if 3 and 6 were not there (i.e., if both cells were empty), would the number 4 still in the middle? If so, could you please explain the logic? Thanks!
Yes it would still be in the middle because of the rule of TMB It may not be in that spot, but it will be in row 2 cell 4,5 or 6. I suggest you go to my channel page to understand lesson 1 where I explain the TMB rule You will find it here :
th-cam.com/video/ckdwhm7GM94/w-d-xo.html
and here :
th-cam.com/channels/d8JaOdfEWcJOtwG6YayW0w.html
Hope this helps
Robin
@@SudokuGuy I think they meant center. Of course it will be in the middle, but you only know it goes in the center because of the 3 and 6, right? It doesn't have to middle center?
Shouldn't the mallet be like a fork instead, since the "head" part of the mallet cannot have the small numbers in the centre?
sorry NO. Because tmb and LCr wont' work. 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.
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Hi Robin. How did you make a diagonal out of 4s in the 3rd vertical block. Aren't they (the small 4s in the bottom most block) supposed to be evenly spaced like the 4s in the top right most block ?
The 4s as I mentioned at the end of the videos can be anywhere in row 3 block 3 and and and where in row 1 block 3. IThe diagonal cross pattern will still apply. Hope this helps and I hope I understand what you are asking.
@@SudokuGuy Thank you. :)
found a cleaver immediately in my puzzle...thanks Sudoku guy
That's exciting isn't it?. Discovering a new technique is fun. All the best as you continue in your quest to solve. Please subscribe and share with others. It's free.
already done Sudoku guy :D
Sudoku should be a subject in school boards 😁 i like your videos sir
I agree. Please give me a thumbs up below the video if you like it.
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Can you say how many numbers atleast there must be in any puzzle that can be solvable puzzle??????
Min 17 I am told.
Mn Babariya 17, and there are game-theoretic theorems about this.
Thnkyouii 🌾
Thanks to you too for your support. Please tell others. Lots to learn eh! Robin
Namestey sir .
Greetings from india.
Namaste to you too. Have fun. sudoku can be addictive.
Hi, Can you put a mallet in 2 blocks?
Sorry Yu NO. A mallet is always found in 3 blocks, horizontal or vertical. 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.
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Question: Watching Lesson 20 I can't help wondering if the cleaver, mallet, table, and diagonal cross would be found earlier and easier using using LCR/TMB?
Thanks,
Darren Clark, Avid Sudoku Guy watcher and teacher from Edmonton, Alberta, Canada.
HI Darren, I don't think so. Spotting the pattern has to happen first. Learning to spot and keep an eye out for these patterns helps me. Then LCR and TMB takes over. Watch the video I am uploading on tues. It is being premiered. tutorial #58
Darren Clark There are many moments in a puzzle in which the only way to place a particular digit somewhere, or at least restrict it to a row or column within a block, is by using one of these four X-wing, because you would not be able to using TMB-LCR.
I agree Darren. Apart from the cross, the rest could be found with the LCR/TMB technique. Adding cleavers, mallets and tables just makes it confusing. Keep it simple.
A cleaver can have different numbers too??
Spotting a cleaver really helps.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. For a list of all videos see below
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A bit of confusing part in cleaver and table.. when u changes the position of small numbers in blade of cleaver and legs of table there is no 2nd position of that small number is the box .. so u r assuming that the 2nd position of that small number should be in the blade or the legs of the table .. hope u get my point.
Yes. These patterns are very helpful to spot. Hang in there. Read and watch again and I hope you will understand. Robin
sir its just u r giving new names but the processess involved are all the basic ones please enlighten us with something really appreciating
+roshan singh There is lots more to come.
Sudoku Guy
Thanks for all your hard work, Sudoku Guy. You have created a wonderful resource for us.
go get a life
ubctbird65 hey slick, maja said sir and please. in my universe thats pretty courteous. i appreciate Sudoku Guy 's slow pace because this is a logic puzzle. but i also share the sense that these are VERY basic techniques given different names and these videos can be very tedious. keep your finger wagging to yourself. stop getting upset for other people, especially when youre mistaken.
TheSeeohhdee *stop getting upset for other people, especially when you're mistaken*
You're a hypocrite. You say this *even though* you're definitely upset and are also mistaken, because as stated, these are not renamings of basic techniques, thess are advanced techniques. Using LCR-TMB or matching tuples alone cannot produce an X-wing without applying bifurcation or further logic that makes it more advanced. If you get the impression that this is not true, then you are wrong. It is that simple. Sudoku is logic, and logic is objective. You do not simply get to decide whether a technique is equivalent to another or not. Different game-theoretic theorems exist for each technique, and they are applied differently in different puzzles.
Before you go off giving lectures to people, make sure you are not being an uninformed hypocrite next time, capisce?
Hi sir
How much time on average should it take a good sudoku solver to solve a difficult suduko?
It depends on how many procedures, tricks and patterns you spot. It takes longer if you put all the small possible numbers in yourself. For me it can take 30 -40 mins for the very difficult. levels. Practice helps to speed things up. You get great satisfaction when you can solve the very difficult puzzles. Have fun.
The time it takes to solve a difficult sudoku puzzle, if you are experienced and know techniques, ranges between 20 and 35 minutes, usually.
Your videos are amazing; they have been so incredibly helpful. A ‘small’ suggestion: could you please stand in such a way that the puzzle is clearly visible most of the time (to the far left)? I realize it’s tricky when you have to point things out and write stuff, but it helps us learners see the patterns that you are referring to more easily. Thank you:)
Noted! You may notice that in my recent tutorials I have the board at an angle to avoid this happening. Thanks for you kind remaks.
in the real exemple , there is another mallet ; thank you again
Good on ya Dounia. 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. 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.
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Hii Robin I have A Small Doubt
Will This Sudoku Logic helps to sharpen our logic in programming??
+CHANDRA SEKHAR Hi Chandra, As I am not a programmer, I can't say, however sudoku definately helps brain fitness, and memory as well as logic. Memory is required to remember all the different techniques and tricks, and also if you wish to go faster and not put all the pencil marks in and outside the puzzle.
Are you a Mathematics teacher by origin profession ?
Hello Flory. NO I am not . In fact I was terrible at maths in school. However this is all to do with logic. 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'm confused. In this lesson (20) at 17:42 you already have 4s in top #s 7 and 9. Why isn't a 4 in #8 also a possibility?
+Lindsay Johnston Well done. Lindsay. You are right in that an 8 goes in cell 2. I was pointing out the pattern known as a diagonal cross using 4's. If I was going to go on with the puzzle that would have been solved, however I was purely demonstrating the patterns in this puzzle to watch for. Hang in there. If you are up to lesson 20 you are doing well.
Essentially, a four there would lead to a contradiction. But that's also true for a four in #7. So the puzzle was clearly made up to show off this technique.
So the 8s are little numbers but are the 5s?
In the cleaver blade Yes
I just realised I'm advenced at sudoku. I just did it myself.
Well done Emine. Keep learning as there is much to learn. 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.
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i know 8888 can get 8,but 58and 58 ,it can get 5and 8?
OK???
@@SudokuGuy i know it,ths
I just love X-wing strategy. Guess it is similar and gives the same result.
It'd good that you can spot an Xwing. Well done.
I found this lesson to be very confusing. You did not explain why you have used both empty cells and numbered cells to make the cleaver. If it doesn’t matter, then cleavers are virtually all over the board. Same for the mallet. Also, it would help if the red template was drawn to scale.
Thank you Minna.. I suggest you look at the video again and I am sure it will help you to understand better. All these patterns are helpful when you spot them. I cover these in many more tutorials. If you go to my website sudokuguy.com and scroll down to the index of strategies you will find all the tutorials etc which cover these patterns and hopefully you will see the value of spotting them. All the best. Robin
I am confused where to put the the pattern in the right block! ...please elaborate more, Sir.......from the philippines....
It can e found in any block and in any direction. I't a matter of spotting it. Hang in there, with practise you will start to see them more often. 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:
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So a cleaver is derived from an x-wing present in 2 adjacent columns... nice.
Only in a limited way. Tomas. The pattern is very different from and x wing as an x wing usually take up 4 blocks. The cleaver and mallet both have only 3 blocks.
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.
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Don't think this is explained clearly or am I the only one who don't understand? What if the 3rd row which is supposed to be populated also allows for the number, that would make it impossible to adopt this strategy.
Sorry maximus, but you seem to be the only one having a problem. this is not a puzzle but a demonstration of patterns. 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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I too am working on understanding! Cheers!
okay sir looking forward to it
Very good to know these patterns. they are useful in more advanced puzzles. The key is to spot them!!!
How do you know the handle isn't on the right side instead of the left? I do not understand. I love your haircut. You look so handsome.
Thanks for aking. it could be on the the right or left or top or bottom. Watch more videos and you will see this happen.
Bonjour monsieur. Parle-vous francais?
Sorry I don't but if you go to the link below you will find out how to have my words translated into French. th-cam.com/video/ocYLlvrJqKk/w-d-xo.html
Baby rim
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watched 2ce
I see you are watching the videos in order...that's good. Have you watched video from 1 -25? 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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Good technique. But this could have been presented in two minutes. Didn't need 21.
Why don't you make a 2 minute video yourself then? Instead of being needlessly critical, you could actually do something useful.
ok, cool, so your saying that all the technique and the example can be shown in less than 2 minutes? Plus, if he did a 2 minute video, its way too short o understand everything
This video is only 14 minutes if one watches at 1.5x speed.
See comment below
little numbers should be in your head.
slow but train your short memory retention capacity...
mental exercise...
You are right. In many of the lessons and toutorials I mention this. When you reach the very advanced level you will need an excellent memory. All the best when you reach the really tough puzzles.