Sudoku Tutorial #85 Solving a DIABOLICAL PUZZLE.
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- เผยแพร่เมื่อ 19 พ.ย. 2021
- #learn sudoku. #sudoku guy #learn how to solve sudoku step-by-step
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This is the type of puzzle where it is very easy to miss ramifications and sometimes I take a different path based on what I see and when, however in the end it worked
If you found this tutorial helpful please give me a thumbs up under the video...thanks.
For some reason beyond my control the cursor arrow was sometimes small and sometime large. My apologies. I could not correct it.
Chapters.
000 introduction and what did not help.
1.12 The beginning of pencil notation using computer.
NOTE
I have just updated my website. When you go to my website. (sudokuguy.com) scroll down to "index of techniques, procedures and tricks" Click on the red rectangle and you will find the link below the screen. Click on this and it will take you to a spreadsheet showing a list. Click on the number you wish to learn more about and it will take you to that video.
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A fun step by step video course on how to solve sudoku puzzles from beginners to advanced levels. It's FREE!
The most popular site online to learn how to solve sudoku puzzles from beginners to advanced levels.
I would like to acknowledge Jason Linhart for his excellent app called "enjoy sudoku" (the Heart version) You can find it on the app store under the heading sudoku.
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Hi Robin. I’m a fairly new Sudoku Guy follower although not new to Sudoku. So glad I found you. I love your techniques, your sense of humor, your devotion to helping all of us, and last but certainly not least, the way you explain everything so clearly. Thank you!!!!
Awesome! Thank you! Stephanie. You have made my day!
I started off with sudoku puzzles as an entertaining way to pass time. Found your channel and fell in love! You are so very talented and really gave me an understanding of theses puzzles and a love for solving. I feel as if this channel is really under appreciated and deserves more. You take the time to really go deep into the puzzle with these tips and tricks. I am very thankful for such your helpful videos!
Thank you so much Jenna!. You have made my day. 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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Difficult puzzle. Solved beautifully. Your style of puzzles are excellent. I am a regular follower of your videos. In the interest of promoting suduku puzzles, I suggest the viewers to see the videos of KS Rao from India. His videos also equally impressive, interesting and excellent, though his style of solving is entirely different from suduku Guy. Also KS Raos two suduku books are excellent, educative and interesting. I love and like both Suduku Guy and KS Rao very much and pray almighty to keep good health and long life for both of them.I am also confident of solving difficult suduku puzzles combining both of their tricks.
Thank you very much for your comment. All the best as you continue to learn. Robin.
Thank you CS Viswanathan Iyer for the suggestion. I just viewed KS Rao's videos on solving sudoku and found it incredible how differently he solves them. Very interesting and I might watch more once I have exhausted all Robin's techniques... currently going through them for the second time! I'm very attached to the Sudoku Guy as he is very methodical and organised, and finding the lesson one needs is remarkably easy and useful.
Gee thank Lulu you have made my day. Please tell others about my site the most popular site online for learning sudoku
Great video, Sudoku Guy. I love the new format. This one was a little tricky for me getting started. Your tips helped. Thanks again.
Glad to hear it! hang in there UCAN do it!
Thanks! I forget things to look for but the tutorials are great to review and be reminded of steps to take. :)
You are so welcome! Sandy Below you can find all of my tutorials and lessons .Go to sudokuguy.com Yes it is a good idea to watch past videos as there is much to forget and so much information. 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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YAY! After time 7:12 I was able to finish on my own. I made a note to look for the things you mentioned at the start. I did mine on Pen and paper.
Congratulations Kandi. You are well ahead of many players. Hang in there.
Super excited!! 🤩
Hang in there bookaholic. Ucandoit!!
I wanted to learn Soduku since a long time. Thanks to you I'm now able to solve many puzzles. Stay safe.
Thanks and you stay stay safe too. 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 always come to your videos when I’m stuck helps me get less frustrated :)
Happy to help! Isabella. 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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just what I needed to know....those little numbers.thanks
Glad to help Joe. Much to learn and I hope this helped. 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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Outstanding. Loved this lesson. Learned a lot.
Glad to hear it! Please tell others.
Robin
i'm very impressive knowing you've been maintaining a soduku serie for several years. Wish you all the best and stay tuned 💥
Thanks Tran. Happy learning. 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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Tried sudoku first time from your videos... Thank you
Well done. i suggest you go the the link below and here you will e able to learn sudoku step by step by watching 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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Very difficult.. amazing skill..😀
Thanks a lot 😊Ananda
Nice puzzle. Good solve.
Thank you! Cheers! Tacio it was quite a challenge and there were several routes which could have been taken, however I wanted to show the power of locked little numbers..
Looks like this is one of the difficult puzzles of the Nikoli series from Japan, that has beautifully handcrafted puzzles.
Thanks for sharing Taq.
Great sudoku Teacher! You make difficult things easy .
Gee Thanks 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 how to solve. For a list of videos go here:
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Very helpful
Glad you think so!
Great puzzle! If you spot the 13 pair in R7 (at R7C2 and R7C8) and the 1289 quad in C8 then the 3 in C8 has to be in R7C8 and therefore 6 in R6C8. There is still some work to do but nothing too hard - and no need to fill in all the cells!
Well done Ross. congratulations This was meant to be a demonstration. Yes I know about the other tricks but I wanted to show and revise other techniques.
Wow I have a sudoku competition tmr and I did not know anything. Your videos explained me everything so clearly and easily. Thank you
Best of luck! Glad to help whenever i can. There is much to learn. All the best....hang in there.
@@SudokuGuy thanks. I actually got selected for the competition I was the topper. All thanks to you
thanks bro I learnt a lot
Glad to hear that. I have just updated my website. When you go to my website. (sudokuguy.com) scroll down to "index of techniques, procedures and tricks" Click on the red rectangle and you will find the link below the screen. Click on this and it will take you to a spreadsheet showing a list. Click on the number you wish to learn more about and it will take you to that video.
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Thank you❤
You're welcome 😊 Glad you are learning. 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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Great Video!
Greetings from Norway!🇳🇴
Thank you very much Malqoon's. 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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amazing
Thanks Shreehan. 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 just wow. I started playing this one and managed to find some pencil numbers using snider notation but then I was like “what next”. Watched the video up until the 5 minute mark and notes that you found all the little numbers and was working from there. This approach never crosses my mind as I always considered it bad practice, but as you rightly demonstrate it does show those restrictions which allows you to get going. So it’s one I’ll now add to my arsenal.
Great work as always with this Robin, I really love it when I learn new tricks from you. Just out of curiosity, did you ever get round to doing this one on the board / on paper. I’m intrigued as to how you would approach it (as you mentioned at the top of the video, the approach I guess would be completely different)
No I didn't do it on the board because the board was somewhere in the Pacific Ocean on a ship. I needed to keep uploading videos so I went this way , I am now back to doing it on the board. The board has finally arrived. Have a look at the last couple of videos tutorial 87 and 88 Robin
En su desarrollo observé lo siguiente: En el min 20 al encontrar el "matching pair" (5,8) en 8a fila=row Se deben eliminar TODOS los # 5 y 8 que se encuentren a lo largo de esa fila, quedando de la siguiente manera: r8c1=(2,9) r8c4=(2,6,9) y r8c9=6. De la misma forma, en el min 27 al encontrar el "matching pair" (2,9) Se deben eliminar TODOS los # 2 y 9 que se encuentren a lo largo de esa fila, quedando de la siguiente manera: r5c4=(5,7,8) r5c6=(5,7,8) y r5c7=5
Well done correct I teach this in the advanced lesson as well.
Antes de ver su resolución, primero trato de resolverlo yo mismo y ya después lo comparo con el suyo. Mi desarrollo fue el siguiente: cuaterna (1,7,8,9) en 2a fila quedando el par (3,6) en dicha fila; cuaterna (1,2,8,9) en 8a col quedando el par (3,6) en ducha col; como el #1 quedó alineado en 9a fila dentro del Sector 9, ent haciendo TMB (7,2)=1 (8,3)=3 (2,3)=6 (2,6)=3 (3,2)=3 (7,8)=3 (6,8)=6 (4,2)=6 formándose el par "matching pair" (5,6) en 1a fila dentro del bloque 2 y la cuaterna (4,7,8,9) en 1a fila; único lugar (2,9)=7 (9,7)=7 (9,8)=1 (2,7)=1; como el #9 quedó alineado en 1a col dentro del bloque 7 entonces (2,1)=8 (2,5)=9 (8,5)=5 formándose la tercia (1,7,8) en 3a fila dentro del bloque 2 entonces (3,1)=4 (3,9)=2 (5,8)=2 (3,8)=9 (1,8)=8 (1,7)=4 (1,2)=9 (1,3)=7 (8,7)=8 formándose la tercia (3,5,9) en 7a col dentro del bloque 6, entonces (6,9)=4 (4,9)=8 (6,1)=6 formándose el par (7,8) en 5a fila dentro del bloque 5; (6,5)=1 par (7,8) en 3a fila dentro del bloque 2, entonces (3,4)=1 (4,5)=4 (7,5)=7 (3,5)=8 (3,6)=7 (5,6)=8 (5,4)=7 (7,6)=4...
Thank you for your comment. Look at other videos and you will see that i do this/
At 21:20 after you eliminated the extra 5's because of the 5-8 matching pair, I was expecting you to do the same with the 8's. It was neat how you showed another way of getting rid of them.
Thank you Tinkering John. Yes there are many paths to take in order to solve. So much depends on what you know and what you spot and when.
This is my first time watching your videos. Wow. I've learned so much. Your techniques are a game changer for me. Great videos.
Awesome! Thank you! Angela. 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 is a tough puzzle that needs a process of elimination, I try to avoid filling the whole grid therefore I look for the dominant numbers, in this case it is the inter-connectivity of the 3-6's so I concentrated on the rows with these numbers in and discovered the same matching pairs our learned tutor found and it got me started. I really enjoyed this puzzle and watching the video
Well done Paul If it worked that's great. Happy New Year Robin
@@SudokuGuy mm.mm.
@@SudokuGuy mmmm
@@SudokuGuy kmmmmmmm.mm
Thanks for sharing. Great work. I look for locked little numbers first, does that matter?
Not at all. Thanks for watching. Robin
I could solve this puzzle with pencils, erasers and papers after getting a hint only of a locked number#9 in Block 7.Otherwise, I refrained myself from looking into the video before I solved it. I studied your video thereafter intensively to learn and edify my 75 years old mind once again.
Hello Birchard. thanks for your comment. You are using your brain and at your age this is good. 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 Sudoku Guy: thx for another puzzle. But I miss your BIG board and your handwritten explanation with the RAMIFICATIONS! The computer version clears out the numbers way toooo fast! Hope you bring back the BIG board version!
Working on it! I am patiently waiting for my famous board to arrive from Canada. Due to covid and lack of containers and now a lack of drivers willing to go to different states, the shipment has taken about 6 months to reach me. I assure you that as soon as it arrives I will be back to the white board.
@@SudokuGuy On my Sudoku app on my iPad, I can go into settings and tell it if I want it to automatically remove the little numbers for me or not.
I observed a pair 5,6 locked in the first row column 4 and 6. This led to a single digit 7 in row2 column 9. The puzzle unraveled easily thereafter.
Yes you are right. I knew there was a hidden matching pair there but decided to use other paths in order to teach different techniques. congratulations on noticing 5,6.
Hey mr nice sudoku guy :D i have made a sudoku with my grandma when she was preparing for hospitalization. we cant fifnish it because it was to hard for us. first time for me making sudoku :D then i have watched many videos from you. and many things make sence now. but i cant finish it. it must be for experts. now i cant sleep :D:D:D sorry for my bad english. greetz from germany
Guten Tag MrElBeno, May I suggest you go to earlier lessons and tutorials. This video was very advanced. See below my url to go to easier learning videos. Start at lesson 1. 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 your Answer Mr. Robin, i watched the most of you lessions now, but i cant finish my puzzle, seems that i am not a expert :D
Interesting puzzle. With the rating given , I was fully expecting some advanced techniques would be necessary - yet there never were any! I was looking for finned x-wings or swordfish, unique rectangles, y-wings or more advanced wings, x or xy-chains and never found any. I do all mine by paper and pencil (to me, the computer is cheating) and I've never filled in so many small numbers before! I've been working my way through Frank Longos' hardest books and never seen one quite like this. It's cool that it is solvable by folks who may not know advanced methods.
Yes you are right. No real advanced techniques were needed, however know locked little numbers is the technique i wanted to show. thanks for sharing mathguy1.
I found quads and a pair in column 8, which restricted the 1s in box 9, giving the 1 in box 7, then the 3s in boxes 7, 9, 1 and 2, the 6s in box 6, 1 and 2, leaving a 9, 1 pair in box 3, forcing the 2s in boxes 3 and 6, thus resolving the 9,1 pair, giving the 1 in box 9 and the rest of boxes 3 and 1.
Congratulations Julian for noticing other ways to solve which I expected.
Robin - another educational and entertaining video - thank you. Can you tell me the name of the software you used - I would like to purchase this version. Thanks stuart
In the description under the video. Click below the video on SHOW MORE to find the description.
Quite DIABOLICAL!
Thank you Mia for your support.
Before you found those digits, you will notice in the beginning that there is a matching pair along row 7, that is #s 1&3 at column 2 and column 8.
Yes I also spotted them, however I chose a different path to take to show another trick. Robin.
How to get the sudoku software you use to perform your solving? Thanks!
The app store ...go to sudoku apps then look for "enjoy sudoku" (heart version). Look also at the instruction/description under the video where it says SHOW MORE.
Hi Robin, thanks for your Sudoku Videos... May i ask which program/site did you get your computer grid from..thanks
I made it. A friend designed for me. The picture you have included is from Jason Linhart on the App store. called "enjoy sudoku" I hope I have understood your question. Robin
@@SudokuGuy thanks for the reply....is your software available to members?
No ,but you can purchase from Jason Linhart by going to the app store. see above
To watch all of my videos in number order go here. By going in number order you will learn step by step and not become frustrated. master the easy puzzles first.
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I Robin, Witch programme are you using, Nice demo
Go to AppStore sudoku ,enjoy sudoku by Jason Linhart buy the heart version. Go to the description under the video for more detail. Click below the tutorial on SHOW MORE.
what program are you using to solve sudokus?
Go to SHOW MORE on my channel page where I give this information plus more. 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, thanks for your video. But as usual ;-) I always have the same remark. Please don't fill all the cells! There is no point and it's not funny. What's funny is to discover the intended path from the constructor. I know you always answer that you wanted to show other tricks. But to fill all cells is not a trick. For me, here the trick is to observe the grid and indeed, not a lot of corner marks or cell to fill following 1 digit. The "trick" or the next step is to search with 2 digits, and not 1 anymore. There is a square with corner 36 (C1 and C5) and box3 with 36. Conclusion: only 2 places for 36 in row 2. Same with 13 (C1 and C9 + box 8) and only 2 places for 13 in row 7. With those 4 pencil marks, only 1 place for the 6 in C8 which gives the 3 in C8, then the 1 in row 7 .... and soon the grid is finish! At this level what we expect from you is to show us more clever reasoning instead of just filling all the cells. It's a crime of lese majesty in such a beautiful designed grid! All the best.
Great comment!!! 👏👏👏 Was way more instructive than the video itself. 👍
Thanks for your comment. You are experienced and I am teaching learners. There are many ways to cook and egg! Robin
Yes thanks.
Which program/app did you use for the computer?
Read below. to find out. "Enjoy sudoku" by jason linhart. Scroll down to find the heart version. You will find it in the app store.
@@SudokuGuy thx very much. Found the app and took the paid version of it. And thank you for the nice explaination of the nice puzzles.
Can you provide the name of the computer program you used for this puzzle?
Hello Walt. "Enjoy Sudoku" by Jason linhart. The "heart" version. You will need to scroll down under the sudoku heading in the app store to find this video. 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 program are you using
You can go to the description under the video to get the information. Jerry. All the best.
What is the website/software you use please ?
It is an app called "enjoy sudoku" by Jason Linhart. scroll down down down, under topic of sudoku heading to Enjoy Sudoku (heart version)
Hey Robin - I know you are a paper and board guy. Are you getting used to solving using this app (I believe you said Jason Linhart has it on his site)?
Yes I will have my famous white board in approx one week. It has take over 7 months to come from Canada. I find Jason's app very good.
21:56... I was wondering why you got rid of that 8 when it was already a 5/8 matching pair? Shouldn't it have been the 8 in Row 8 Column 9 that was removed? But then I realized that, even if you did it that way, that 8 in that box would've still been removed anyway. Funny how that worked out. 😆
Hello mydoggylives!!! thanks for your comments and support. 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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👍👌🇨🇦❤
Thanks pocket change. Love that name. Here is the latest video. th-cam.com/video/4esodzF6Pcs/w-d-xo.html
Is there a free software similar to 'enjoy sudoku' which is free ?
Yes but be prepared for lots of advs. If you want something good without adv go to "enjoy sudoku and be willing to pay a little. Robin
@@SudokuGuy I have a Sudoku app on my iPad that pops up ads all the time, so I turn off the wifi and I can still play the game with no ads.
Hidden pair on R2, 36, pops out
Yes it does.
Whenever you "make a big number," I notice you don't ask, "what are the ramifications?" Is that no longer needed with a computerized puzzle?
Thanks Bob for your comment. Yes I usually do ask what are the ramifications. Sometimes I say "now what does this do?' This time I didn't do it enough and thanks for pointing this out.
Traduction en francais, cest pour quand?
Sorry don't understand. I used translation but it didn't help.
Very nice and easy to understand! What is the name of this software or APP? How can we get it? Thank you!
In the description
Not diabolic at all
This is aimed at learners. You are obviously very experienced. What is easy for some players while for other players it is difficult. So much depends on your knowledge of what to look for. Thanks for your observation.
Unfortunately, probably because you are using a computer, you are too slow. It is very frustrating to those of us who are experienced solvers
Interesting comment as I have many others who appreciate me going slow. You are experienced. Thanks for your comment David.
@@SudokuGuy I do really appreciate your videos and learn a lot. Probably using a computer makes it easy to miss the obvious which you would not do using your board. Please do not take my comment the wrong way because I do enjoy your videos and really appreciate your advice.
Even with using his famous Sudoku white board and not a computer, Robin is very thorough and takes us step by step, never rushing us through. This is not a fast lane, but an absorbing and relaxed venture, more suited for climbing solvers. Way to go, Robin!