BEST Hidden Triples Video Ever! Sudoku Intermediate Tutorial 5

[@SmartHobbies]

📕Get my FREE Solving Guide that will help you solve over 80% of all Sudoku puzzles🧩to include NYT Hard👉👉www.buymeacoffee.com/timberlakeB/e/125822 Time Stamps 0:00 Intro 00:25 Hidden Triple Example 1 02:03 Hidden Triple Example 2 05:14 Hidden Triple Example 3

[@billkeithchannel]

Crap. You moved on to puzzle 2 before getting to the point at where I am stuck. I noticed in puzzle 1, there are two quintuples in upper and opposite corners. 456 at the top left and 123 at the bottom right. Are there any rules that can get ride of any numbers there?

[@SmartHobbies]

@@billkeithchannelI looked at the puzzle. After the solve I make in the video for example 2, you can solve 9 and 6 in block 7, then 6 in block 4 and block 6. That should help you get the rest of the way.

[@billkeithchannel]

​@@SmartHobbies Okay, I put in only the black numbers for puzzle 2 in my program and the code in 13 rounds of 6 steps (part a to analyze and highlight and part b to auto-fill) got it to the point where it is what you are showing on the screen with the blue numbers now filled in so our screens match. But why didn't you turn on the 1 bit in 71? You keep referring to the 1's as a triple but only have the 3,7 showing. So once that 1 is on, I notice in the first column there is a 1,5,6 triple so... applying what you are saying to column 1 instead of row 7, wouldn't that mean the 3,7 can be eliminated from 71? I played that out on paper to see what that would look like logically and see if it busts anything. I typed out a bunch more but deleted it until further investigation.

[@billkeithchannel]

Okay that didn't work but removing the 3 from 92 solves the entire puzzle. Now, how to figure out how to make a rule that determines that 3 removal... hrmm.

[@maxstunner100]

Struggled with no.2 and had to watch the video, but found 1 and 3 very approachable and enjoyable. Thanks for sharing!

[@SmartHobbies]

Thank you so much for the feedback. Happy to hear that you made it through puzzles 1 and 3 okay. How long have you been watching Smart Hobbies?

[@brucewayne2091]

I'll have to review the 3rd example as that's what generally trips me up when doing the various 'extreme' ??? that you find online. Example 1 & 2 I use without assigning a strategy/technique to.

[@SmartHobbies]

Cool, Bruce. Thanks for pointing that out. Do you solve New York Times Hard Sudoku often?

[@brucewayne2091]

Every morning followed by Andrew Stewart site

[@SmartHobbies]

@@brucewayne2091 I was watching Rangsk solve one yesterday, and there was a hidden triple right from the starting grid. Do you seem to notice them with those puzzles?

[@brucewayne2091]

@@SmartHobbies Rangsk: unshackling? Haven't seen it yet. I generally load up any classic sudoku & play thru to the end or to a point where I get stuck. However, I'm always puzzled why a certain # is the correct pick when you see what looks like a triple mixed into a quad.

[@brucewayne2091]

Time for another 'how to best use' Hudoku 😉

[@billkeithchannel]

Okay I just figured out something for puzzle #2. Before looking at row 7, the only pointing pair left is the 3,5 on ROW 9. So using that as a starting point... 45-4-8-1-2-7-9=14. So we have 3 boxes in play: 92=3, 5 / 97=3, 5 / 98=5,6 So those 3 numbers have to add up to 14. 3 or 5 + 3 or 5 + 5 or 6 = 14 -3+5+5=13- -3 + 3 + 5 = 11- -3 + 3 + 6 = 12- -5 + 5 + 5 = 15- -5 + 5 + 6 = 16- -5 + 3 + 5 = 13- 5 + 3 + 6 = 14 3 + 5 + 6 = 14 So the only choice is 92=5, 97=3, and 98=6 *edit* _oops can't have doubles in same row and there are two methods for 14_ If more than one choice added up to 14 that still eliminates a lot of possibilities and narrows it down to something manageable. Now that is something definite that I can code. So now whenever I have only 1 pointing pair I am going to start adding up the numbers and see what shakes loose.

[@SmartHobbies]

Awesome, Bill. I love it.

[@billkeithchannel]

@@SmartHobbies Crap. That was not as helpful as I had hoped. It only helped fill in the 6 at 98 which you already had from some other method. So I am back to trying to find a way to remove that 3 from 92, so I'm again looking at what you are showing with row 7. But I wasn't getting why you were ignoring the 9's. 71=1,3,7 | 73=1,7,9 | 75= 9 | 77= 1,3 So I put 9 in 73 and see that it gives the 1 or 3 no place to go once the 7 is put in 71. So without knowing any of that looking ahead stuff, could I conclude that because the 9 is by itself it has to be the only choice?

[@SmartHobbies]

@@billkeithchannel Hi Bill. In puzzle 2, there is 4568 Naked Quad along row 7, which removes 468 from 75, leaving just a 9 there. If you look at it from hidden triple viewpoint like in the video, then you see 1,3,7 together are only in 3 total cells, which allows you to eliminate all other candidates, including 9. Hope that helps.

[@stevenridings7880]

😂great tutorial thanks

[@SmartHobbies]

Glad you liked it!

[@JohnRandomness105]

I lost a rather long comment about example 2. Sorry, I don't want to rewrite it. Hours later: I did example 1, beginning as the initial screen showed and placing the 7. Repeating the process in block 6 gave a different result, but I still placed a 7. Similar happened in blocks 2 and 8, also placing 7s. Block 3 was all bivalue cells, and gave me two triples to narrow blocks 1 and 9. Block 7 was also all bivalue cells, but no triples. Instead, it placed the 9 in row 9 and the puzzle collapsed. I saw that I'd already solved the third puzzle. 15 1/4 minutes was rather quick for me. 2:20 I remember that row from Example 2 -- in fact, the *quad* there stood out in my mind. I'd only partially fulled it out, with 458s in R7C8 and R7C9 and 4568 in R7C4. Based on a casual view of the digits facing it, I penciled in R7C6. My hunch was correct, and it was 4568. The quad gave me the 1379 quad. I didn't notice that the 9 was placeable in R7C5 until much later -- I didn't notice the 19 pair together with the 1 in block 8. 3:00 Um, why the quint and not the quad? 5:50 I don't think that I watched the video, although I did the puzzle. I would have noticed the irony of my comment about obvious things like the 123 triple. That hidden triple was "hidden in plain sight".

[@SmartHobbies]

Sorry to hear that John. Do you remember the gist of what you were saying about Example 2?

[@JohnRandomness105]

@@SmartHobbies I played the hand, getting quite stuck a good part of the time. You spoke of triples, but didn't mention quads, which I encountered in the solve. Several situations were there for a long time before I noticed them.

[@JohnRandomness105]

@@SmartHobbies I added to my comment. I did Example 1 and loaded Example 3, but I'd already done it. Then I watched your examples.

[@SmartHobbies]

@@JohnRandomness105 it is interesting and understandable that you would see naked quads instead of hidden triples. For me, what and how I’m marking will usually determine which strategy I see first.

[@begingardener275]

THIS IS THE BEST VIDEO FOR 'TRIPLES'. LOT OF OTHER VODEO MENTION A STRATEGY IN THE TITLE, BUT GO ABOUT SOLVING A WHOLE SUDOKU. WITH THEIR HEAVY ACCENT AND THE LONG VIDEO, YOU LOSE THE PURPOSE OF THAT VIDEO. HATS OF TO THIS VIDEO!

[@SmartHobbies]

Thank you very much. I appreciate your comment. How long have you been solving Sudoku?

[@mrDingleberry44]

Lol. I'm sure the tip would have helped a lot of my speed in solving puzzle. I always try the puzzles, then watch the vids.

[@SmartHobbies]

That is cool. I love that you check out the puzzles. I usually let the video play if on a laptop while I solve, to see if I can beat the video 😏 Which puzzle gave you the most trouble?

[@mrDingleberry44]

@@SmartHobbies I think the 2nd. 3rd was super easy. I'm not good enough at recognizing the advanced strategies to ever really beat the times. Plus there's a lot of diabolical strategies that I've never tried to learn yet. I don't solve while watching vids, since there's a lot of strategies that I haven't tried to learn yet. So I listen to the reasoning.

[@SmartHobbies]

@@mrDingleberry44 nice insight. Whenever you are ready to go down the diabolical path, I have plenty of tutorials to choose from. I’d recommend starting with X-Wing and Skyscraper tutorial and go from there. Happy solving.

[@billkeithchannel]

Example #2 also doesn't seem right. You say 5 cells but 458 is only in 4 of them. You also don't have the 1 showing in the first box only the 3 and 7. Box 3 can't have a 3 so how does that make it a 137 triple? What you are showing and what you are explaining are not matching.

[@SmartHobbies]

Great question. The 3 candidates 1,3,7 do not need to appear in all 3 of the purple cells, but that the 3 candidates do have to be limited to those 3 cells in the row, so you may have a 3 or a 7 or a 1 in just 2 of the 3 cells or all 3. Hope that helps.

[@billkeithchannel]

Example #1 makes no sense how you determined a 7. Your choices for the two squares in question are 4, 6, 7, 9 and 5, 7. Why aren't you considering the 5 in the choices? The square you chose to be 7 could also have been a 5 so how did you eliminate 5 as a possibility? 5 is also a candidate for square 3 with 4, 5, 6, 9 as choices.

[@SmartHobbies]

Great question. For example 1, the 4,6, and 9 in row 6 have to fit into the 3 purple cells in block 4, which leaves only 3 cells in block 4 available to be a 7. Since we have 7s in columns 1 and 2, the only remaining place to put a 7 is in column 3, (R6C3). If you put a 5 there, then there would be no place to put the 7 in the block. Hope that helps.

[@billkeithchannel]

@@SmartHobbies DOH! I see, if you put the 7 in 53 then the 9 must go in 43 which means there is no place for the 4 or 6 so the 7 has to go in 63. And I just now realized those 7's form an interior X-wing with squares 57 and 67 which forces that 7 into 57. I originally tried X-wings from the ends but it busts the puzzle leaving missing numbers in the interior.