Tutorial #92 Always something to learn. Intermediate level.
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This is an intermediate level puzzle, not too hard and not too easy.
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Robin The Sudoku Guy
Chapters.
Throughout TMB, LCR , cross/meet techniques , matching pairs. ramifications
6.20 Locked little numbers / advanced rule of exclusion.
7.45 one cell left.
8.00 Snyder notation, the value of little numbers going into 2 cells only
11.45 Diagonal Cross pattern using 1 and 5 demonstration Lesson 20
13.12 3X3 or triplet found.
16.26 3X3 (triplet) solved.
19.20 Only one path to take. Lesson 5.
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Пікірлер: 81
19:34 The 4 can also go in r6c4, but you have been lucky!
@Elizabeth-ju5dy
2 жыл бұрын
Yes, I saw that too and I was yelling 'Wait just a minute, you can't say that's a big 4...'😂 (not laughing at Robin, laughing at myself, yelling at a computer)❤
@SudokuGuy
2 жыл бұрын
Thanks for your comment. Quite often when you miss a trick it is solved further on in the solving process.
@kerrybrown1192
Жыл бұрын
Yes, I was yelling too :) Because of the 4,9 pair in box 8 and the 4,9 pair in box 2 the box5 c4 pair must be 4,9 ; nothing at this stage indicated that cell 4.4 has to be a 4. Also, cell 4.5 must be an 8 ; leaving only 4,9 pair. Otherwise a great tutorial ! Thanks Robin.
Great to see you back, Robin. Another interesting video. Thank you.
@SudokuGuy
2 жыл бұрын
Thanks and yes I am still at it. Thanks for your support
Thanks for everything you taught me about working out all the puzzles I've done
@SudokuGuy
4 ай бұрын
You are so 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: kzread.info/dron/d8JaOdfEWcJOtwG6YayW0w.html sudokuguy.com
I enjoyed this video. I like how you worked through different sectors of the grid to help us focus on just what you were trying to teach at the time.
@SudokuGuy
2 жыл бұрын
Glad you enjoyed it! Smart Hobbies and thanks for your support.
@byronrobbins8834
Жыл бұрын
@@SudokuGuymake sure that you have everything in each row, column and block.
I understood this better. I will press on!
@SudokuGuy
8 ай бұрын
Hang in there. There is much to learn from tutorial 79 to 100
Thanks so much. I have been trying to solve med problems and NOW CAN DI THEM. I WILL KEEP PRACTICING.
@SudokuGuy
Жыл бұрын
Wonderful! charissa. You are on your way to improve and enjoy sudoku. 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: kzread.info/dron/d8JaOdfEWcJOtwG6YayW0w.html sudokuguy.com Robin
That was fun. Thanks. Stay warm.
@SudokuGuy
2 жыл бұрын
Thanks, you too Andrea
Perhaps you could try pushing us a little harder. I'm not sure "Intermediate level" is really an appropriate description here, as this puzzle is very easy without notation. It's obviously an asymmetrical cut-down from a symmetrical puzzle with 34 givens. Oddly, the two cells with removed givens can easily be solved first, making the removal somewhat pointless (93 = row 9 column 3): 93, 98 (symmetry restored), 89, 88, 96, 19, 66, 51, 72, 95, 97, 33, 41, 55, 22, 15, 14, 65, 59, 77, 38, 99, 78, 29, 28, 67, 47, 64, 75, 74, 44, 25, 46, 45, 36, 35, 21, 82, 85, 91, 81, 13, 11, 32, 63, 43, 61, 49, 69.
@bluerizlagirl
2 жыл бұрын
I thought it was a good exercise in applying an important rule that is necessary for advanced Sudoku techniques. In this puzzle, it matters that a digit locked into one box within of a row or column can't go in the other two thirds of that box. Now that follows from a more general rule, which states that if a digit is forced into one of a few cells, then any cell that sees *all* those candidate cells *cannot* contain that digit. That forms the basis of every advanced Sudoku technique -- X-wings, swordfish, Y-wings, skyscrapers and so forth. It's important to keep practising applying that rule until it becomes second nature, because there's no way to master advanced Sudoku without it.
@AnonimityAssured
2 жыл бұрын
@@bluerizlagirl I see what you're saying, but before moving on to advanced techniques, it's a good idea to base as much of one's solving as possible on the simplest techniques available. A very good exercise, perhaps best suited to Easy or Medium Sudoku grids, is to try to identify all cells that can be filled in right from the start just by following the numbers. Here's my list for this grid, in no particular order: R2C2 (follow 1s), R1C9 (follow 6s), R3C5 (follow 5s), R9C6 (follow 1s), R3C3 (follow 7s), R8C9 (follow 7s), R9C3 (follow 2s), R9C8 (follow 5s), R7C2 (follow 6s). These are only first-level deductions, based on the numbers already present. I'm not saying that the list is complete, but I think it's a healthy start. A more difficult exercise, not for the faint-hearted, is to try to solve as much of a grid as possible without filling in any cells. For an Easy or Medium puzzle, that's not as hard as it may sound. With a bit of practice, you'll soon find you can solve twenty or more cells mentally. Believe me, you don't have to be a "Rain Man" to do it. It's just a matter of storing information. Whatever sort of memory you have, you need to tailor the exercise to suit it best. Some people are better at remembering rows or columns, whereas others may be better at remembering boxes or even just individual cells. I find that I can store the contents of boxes best. I have a very poor visual memory, but I seem to have a fairly good conceptual and positional memory, which partly makes up for the shortcoming. Boxes keep things local, which is good for positional memory. Before you dismiss this as a hopeless task, please give it a try. Naturally, you'll have to reinforce the memories with a certain amount of retracing your steps, but you'll find that it becomes easier and easier. This particular grid is well suited to such an exercise, as it can be solved entirely in one's head.
@SudokuGuy
2 жыл бұрын
@@bluerizlagirl absolutely correct. memory is a skill needed when solving particularly if you do not wish to add little numbers. the time may caome when you may have to put little numbers in. Look at Tutorial 91 part 2
Robin been waiting all month, thanks. Cant wait to get at it.
@SudokuGuy
2 жыл бұрын
Enjoy and learn richard. Thanks for your support.
Always enjoy. Thanks.
@SudokuGuy
2 жыл бұрын
Thank you for your support.
Thank you Robin
@SudokuGuy
2 жыл бұрын
Thanks for your support JJ
Love your videos❤Fan from India😊
@SudokuGuy
2 жыл бұрын
Thanks, I have many many fans in India. which part do you live in as I have travelled all over your country in the past.
@ajithkanna
2 жыл бұрын
@@SudokuGuyI'm so glad for your reply. I belongs to downsouth part of india named Tamilnadu❤. Your videos made me solve sudoku easily, the game which i thought its so hard to play from childhood👍😊
13:49 how could a 4 be in left? How are right top and right bottom not a matching pair (14)? I'm sorry I just got into sudoku and I'm still learning a lot
@SudokuGuy
8 ай бұрын
Hello Monika. If I understand you right you saw the 1/4 matching pair before I did. This can happen. It easy to miss something as in this case, but did you notice it was discovered later. Congratulations you are understanding. If you are up at the 90's level of tutorials I hope you understand the "locked little numbers". technique. They are very powerful in very advanced puzzles. Hang in there and thanks for sharing. Robin
Love your videos!!!
@SudokuGuy
2 жыл бұрын
Glad you like them!
I didn’t understand the logic at 639. Why did that square automatically have to be a nine when the one was deleted. I understand why the one was in the centre but couldn’t the left top box be the nine?
@SudokuGuy
2 жыл бұрын
I suggest you look at tutorial #2 and tutorials from 79 onwards. These teach you the power of the rule of exclusion to find these go to sudokuguy.com and click on go to tutorials. This take you to my channel page which lists all of my videos. the 1 in cell 3 bl 1 must be removed.
@lab532
2 жыл бұрын
There can only be two possible 1’s in the 3x3 below where the 1 will be forced. No matter where the 1 is, it will eliminate all other possible 1’s in that row, which gives only one spot in the top left 3x3 to be a 1
@SudokuGuy
2 жыл бұрын
@@lab532 Well said.
@XJWill1
2 жыл бұрын
That was an error. He got confused. He got the right answer because row 2, column 1 had to be an 8 (because row 1 and row 3 both had 8 already), and R2C1 is 8, then R1C1 had to be 3, then R1C3 had to be 9. So he got the right answer but used flawed logic.
Great video
@SudokuGuy
2 жыл бұрын
Thanks for your support Roya
Thank you! 😊
@SudokuGuy
2 жыл бұрын
Thanks Victoria.
my daughter and l love your videos 🥰🥰🥰🥰🥰🥰
@SudokuGuy
Жыл бұрын
You are so kind Nancy. 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. kzread.info/dron/d8JaOdfEWcJOtwG6YayW0w.html
Hello Robin , Awesome .... in some video you said that we could use an app for making our sudokus that will teach us also. I cannot remember the name , could you help me ? Thanks
@SudokuGuy
2 жыл бұрын
Yes I can Fernando I put this in the instruction below the video. It is in the app store called "enjoy sudoku " by Jason linhart. scroll down until you come to the "heart" version. There is a small cost involved. Good luck and thanks for your support.
Thanks sir.
@SudokuGuy
2 жыл бұрын
So nice of you 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 kzread.info
Awesome vid 👍🏻 keep going
@SudokuGuy
2 жыл бұрын
All the best. You can learn more about the X wing by going to tutoria 62 and 63
@pramilatripathi9820
2 жыл бұрын
@@SudokuGuy thx!
Was expecting this to be another two parter. Part 1 we solve it, part 2 you solve it.
@SudokuGuy
2 жыл бұрын
Sorry not this time.
Very good video. Is there no central heating?
@SudokuGuy
2 жыл бұрын
Yes but not in that area of the home.
Are you living in Australia now? I remember you telling us in one of your videos that you live in Canada
@SudokuGuy
2 жыл бұрын
Yes I have moved to be with family in my old age.
@thomaswilke6312
2 жыл бұрын
@@SudokuGuy all the very best in your new environment. It’s great to be with family. I always look forward to your tutorials
@SudokuGuy
2 жыл бұрын
Thanks Thomas.
👍❗️
@SudokuGuy
2 жыл бұрын
Thanks.
@24:34, the four could have gone under the 1 and beside the 26
@SudokuGuy
2 жыл бұрын
Thanks for your comment.
❤❤❤
@SudokuGuy
8 ай бұрын
Thanks for your support. Always something to learn!!!. 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: kzread.info/dron/d8JaOdfEWcJOtwG6YayW0w.html sudokuguy.com
Come visit Texas its over 100 degrees🥴
@SudokuGuy
Жыл бұрын
It's freezing ...We are in the middle of winter.and the homes are not centrally heated.
Plz solve this puzzle
@SudokuGuy
2 жыл бұрын
Keep watching and you will see it being solved.
Feel like where I am the whether diametrically the opposite from where you are. That sun can be brutal.
@SudokuGuy
2 жыл бұрын
right Where is that?
@NoName-oy2tk
2 жыл бұрын
@@SudokuGuy Austin, TX.
Took me about 9 minutes, but I wasn't giving a running commentary!
@SudokuGuy
2 жыл бұрын
Thanks. Yes my site is a teaching site. Congratulations for solving it in 9 min
学数独之前我要先学英语😂
@SudokuGuy
2 жыл бұрын
Hello Sam 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 kzread.info
Where was the "intermediate" tip?
@SudokuGuy
2 жыл бұрын
Look at title and SHOW more under video.
123 triple in box 2 gives 5 and 8 in box 2 out the gate
@SudokuGuy
2 жыл бұрын
Correct