This Puzzle Was Made By A 12-Year Old!!
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- Опубликовано: 10 авг 2022
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** Today's Sudoku **
Prepare to be humbled (unless you're very young!) Today's puzzle has been set by grkles and his son GabeyK9, who is only 12 years old. It's REALLY good and returns to the 159 theme some of you will have seen before. Give it a try at the link below:
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Rules:
Normal sudoku rules apply. Digits in a circle must appear at least once in the four cells touched by the circle. A digit in column 1 indicates the column in which the digit 1 appears in that row. Columns 5 and 9 have the same rule for the digits 5 and 9 respectively. (For example, an 8 in R7C1 tells you there's a 1 in R7C8. A 3 in R2C5 tells you there's a 5 in R2C3.)
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Melvyn Mainini
WOO! My kid is so excited, I'm gonna watch it with him tonight :) :)
He did a good job. I think 1-5-9 might be my favourite Sudoku variant, and this was no exception.
This was my first time playing a 1-5-9 variant and it was heaps of fun.
They somewhow put Aad in the title. I hope that can be changed. Congrats anyway to both of you.
Wow - that was fantastic setting! Cheers to both of you!!
You'll need to Message Simmon so he can say when he makes the next video about how your kid like it.
Editing my previous comment isn't working, so here's a new one. We watched it, what a great solve! You found basically every little cool thing we managed to build in. Thanks so much and I'm glad you enjoyed it! Re: the title, it's simply a Quadruple 159 puzzle, so we decided the title should reflect that ;)
Your 12-year-old is amazingly talented. This beautiful puzzle definitely deserved to be shown :) On a separate note, I honestly thought the fourth 9 was in reference to the puzzle-name GabeyK9 ;).
I can just imagine how much fun this must have been to set! It was an absolute pleasure to solve and Simon's excitement was delightful as always!
I wonder if someone was able to solve this without using the 1-5-9 secret.. i do think the quads had enough clues to do it without consciously following the secret
I mean there is a bunch of work in the background, but recording 2 videos per day in an 8 hour working day should be possible for each person. This means 10 videos in a 5 day week which gives 3 videos as buffer in case something happens.
@@chitraagarwal8259 ummmmmmm, what’s the secret?
@@chitraagarwal8259 update: I’m facepalming aggressively at the moment, as a person who did painfully solve the entire puzzle oblivious to the secret. Took me over 3 hours lmao.
25:51 "you can come to an absolute grinding halt" hovering over the 36 pair in the box. Never change Simon, never change.
Have Simon or Mark missed a single day in the last three years? The changes in my life - the Pandemic, career moves, relationships, cities…and here is Simon being my constant.
I don't think they have. In one of Mark's videos this week though, he said that he just got back from holiday and the videos from the prior days were either pre-recorded or he also recorded some on holiday. I've always assumed they must keep at least a couple ready to publish, in case of emergency, other plans, or even if they spend over an hour recording for that day only to get stuck on the puzzle and not publish.
i think there have been some days where there was only one video, but it was probably only a technical error.
LednacekZ probably time zone
Constantly finding the hardest possible solve path
I am so thankful they have not missed a single day of putting out 2 videos per day since the pandemic started.
I don't think they planned for it to continue, as for the 1st 100 or so days they actually counted them. But, when they saw how much it helped people they decided to continue it.
17:34 You also can't put a 56 pair in green because if you try to fill it with both 5 and 6 you'll have a second 6 in the same box to index the 5...
i just recently found this channel and man the community is so wholesome, love it 🙌
over 100 likes 😅😅 dont think ive seen that yet. thank you guys for welcoming me ❤️
We’re glad to hear that : )
Welcome!
Welcome!
I strongly recommend going back and watching all the vids in roughly chronological order... as Simon and Mark develop the channel over time, so do the techniques - you'd lose the discovery of things we all take for granted now :)
@@paulconway670 i was definitely planning on doing this! appreciate the tip🙏❤️
No digit after 10 minutes of staring.
Once you mentioned the trick, I went "What!? Oh, of course!" Gonna go find another 159 to do, now that I'm properly armed.
Think you've still got part of yesterday's intro as it says it's by Aad, which confused me as I didn't think Aad was 12!
I love the fact he is carrying his love for puzzles over to his son! I started solving sudokus when I was 10 years old and they really are my comfort hobby to do. So glad I found this channel as the hosts and the community are so lovely and let's not even talk about you guys' consistency as it's insane
I have my 6 and 4 yr olds doing 4x4s. Future subscribers
@@jessevennard2640 gotta teach them young :))
There’s so many times where Simon replace one set of pencil marks for centre pencil marks and undoes work that he previously did.
Corner marks of 12 and 123 and 134 will get replaced with centre marks of 1234 in all three cells for example.
Thank you for the birthday wishes and a happy 5th birthday to cracking the cryptic!!!
Rules: 04:33
Let's Get Cracking: 06:13
Simon's time: 27m31s
Puzzle Solved: 33:44
What about this video's Top Tier Simarkisms?!
The Secret: 7x (06:20, 06:43, 09:12, 10:26, 12:17, 31:19, 34:11)
Maverick: 1x (22:41)
Schrödinger Cell: 1x (17:46)
And how about this video's Simarkisms?!
Ah: 15x (08:37, 09:41, 10:16, 12:58, 16:59, 20:25, 21:37, 24:04, 26:35, 28:55, 29:01, 29:21, 30:18, 32:46, 32:55)
Beautiful: 7x (09:41, 10:16, 17:35, 24:42, 26:35, 26:35, 26:40)
By Sudoku: 7x (11:06, 21:55, 24:36, 29:06, 31:02, 32:39, 33:29)
In Fact: 4x (00:34, 17:26, 27:38, 30:53)
What Does This Mean?: 4x (16:43, 19:32, 20:13, 26:21)
Clever: 3x (11:03, 12:52, 16:34)
Pencil Mark/mark: 3x (08:02, 09:41, 09:54)
Stuck: 2x (13:11, 13:36)
Lovely: 2x (18:48, 20:25)
Deadly Pattern: 2x (19:19, 32:11)
Hang On: 2x (22:48, 29:04)
Magnificent: 2x (33:46, 34:21)
Obviously: 2x (07:41, 18:30)
Cake!: 2x (02:08, 02:12)
Good Grief: 1x (32:24)
The Answer is: 1x (19:54)
Brilliant: 1x (26:55)
Going Mad: 1x (17:51)
Shouting: 1x (01:54)
Marries Up: 1x (23:21)
Which Means What?: 1x (20:09)
Next Trick: 1x (11:41)
Fabulous: 1x (03:59)
Most popular number(>9) and digit this video:
Twelve (3 mentions)
One (84 mentions)
Antithesis Battles:
Low (10) - High (5)
Column (27) - Row (13)
FAQ:
Q1: You missed something!
A1: That could very well be the case! Human speech can be hard to understand for computers like me! Point out the ones that I missed and maybe I'll learn!
Q2: Can you do this for another channel?
A2: I've been thinking about that and wrote some code to make that possible. Let me know which channel you think would be a good fit!
no way
Interesting
Never thought I’d see the day that bots would provide information that all recipients would find interesting in a way.
just over an hour here. SHOULD have been about 30 minutes though. "Why?" you ask? Because at about 25 minutes or so, I was stuck for almost half an hour (literally staring at the puzzle without so much as a pencil mark added), when I suddenly realized the 1-5-9 constraint works both ways (i.e. if a cell CANNOT be a 1/5/9, then c1/c5/c9 in that row cannot be that column-digit!). Once I thought of that, it took about 5 minutes to finish.
I feel both good and bad - bad because I didn't see that bit, but good because I persevered through the block and did manage to finish with looking at the video.
This was on the easier side when you understand how the 159 rule works. There were many strings to pull at the middle of solving. I enjoyed it! Keep on going kid!
Came back here after solving the sudoku within 3 hours, to watch you solve it 7 times faster! I love these kinds of sudokus, which both beginners and experts can enjoy solving.
22:41 finish. My daughter is not quite ready for setting puzzles yet (I still haven't set one myself), but I'm hoping that she'll get there. Excellent job to the grkles family!
I seem to be running out of superlatives these days but the quadruples indexing quadruples idea is terrific! :) Thank you to both setters, that was enormous fun to solve. A big thanks as well to Simon and Mark for all that they continue to do to showcase such brilliant sudokus.
Gorgeous logic, flawless solve path. I loved it!
I think you are totally right about your theory of being this kind of puzzle a great match for a software programmer/developers brain. I‘m one of these creatures and I never saw so many missed clues after the break-in in any video before 😂👍🏻
I did not know the secret about the low/medium/high digits for my entire solve.
The way I broke in was realizing that the 5 in box 5 must belong in either the 2356 or the 5678 quads, when you carry that through it breaks the 5's in box 6. Then you have to eliminate the possibility that the 5 is in box 5 on the 5678 quad, which is again broken by the indexing of 5's into box 6 again!
Once you do this, you can pencilmark 5's in the whole grid and you're off.
Lovely stuff, 159 puzzles really are very intriguing and seem to unfold like magic. And I don't feel at all inadequate at the thought that someone less than a quarter of my age helped to construct this, no siree.
ive been watching you for Months now.. I finally subscribed today to help you push for 500k :D
0:09 whoa Aad is younger than I expected 🤣
I got 42:11 but I never would have solved it without the video. Once I learned "the secret" of 1-5-9 puzzles, most everything fell into place. A few other bits stymied me, as far as figuring out where the digits have to go on the 2-4-7 and 2-3-4 rings. Very impressive puzzle, and looking forward to seeing more from GabeyK9.
This was such a fun puzzle. I loved the logic I had to use to deduce what would work.
Brilliant puzzle!! I love how everything unwound at the end.
That was a fun puzzle but a lot more challenging than if I had realized the low-medium-high number placements earlier! Excellent puzzle GabeyK9!!!
Loved this puzzle, very fun to play!!!
Been waiting all day for this.😊
I'll just say that I hadn't come up with "the trick" before or during my solve (indeed, it makes perfect sense once you see it!), but I did get a time of 32:53 and absolutely loved it. I was particularly enamoured by the encircled 3 in box 9, as I used it to disambiguate the 36 pair in box 7 (I already had the 1 placed against that circle, and I couldn't index a 9 with 3 on row 7 because of the 159 circle, requiring a 3 on row 8 against the circle). Truly a marvelous puzzle, and I feel like I got to enjoy it twice to boot, as Simon's solve was so different from mine!
Wow! 12 years! Great. A really wonderful puzzle.
13:38 for me. Great puzzle, and knowing the story behind it makes it even better!!
I was totally stumped until you told us "The Secret." Then I finished it myself.
Happy Birthday, Megan! :)
Incredible! Kudos to the kiddo. I finished it in an hour, which is a good time for sudokus like these. It’s just hard for me to wrap my head around them.
Great puzzle, congrats :) I must say, the index cells really add a new dimension to the sudoku puzzle :D
0:11 "111155559999 by Aad van de Wetering"?
I saw the title and thought that it must be an approachable if it was made by a 12 year-old. 15 minutes go by and I’m still stuck with no digits. Arrogant me got a good lesson but was able to finish it in 50 minutes. Good job grkles and Gabey!
A lovely puzzle fun all the way through.
Never done an index puzzle before, so I was in way over my head.
Such a fun puzzle!
Hi!! The solve is spotless and Grkles&Son are my ne favourite setters. Just a little note on the Vid: in the intro when it first shows the ame of the puzzle, it says Aad instead!
Simon, you have the perfect ability to cross off the quadruples clues you've used with the pen tool. Sven's the man!
I finished in 37 minutes. I really liked this puzzle. It felt quite technical in the solve, which I struggle with doing. You really have to pay attention to pencil marks and potential pathways. Great Puzzle!
I really love that you featured this puzzle, Simon, not only because it is such a good puzzle and made for a fun video to watch, but because it is yet another example of the encouragement that you and Mark have given to many debut setters by doing their puzzles. And not only to those whose puzzles get featured, but also to those who are thinking that maybe they could possibly create a sudoku puzzle. Even if they never get featured, they had the glimmer of an idea that it might be something fun to try, and they tried it. CTC deserves all accolades that will come your way upon reaching 500,000 subscribers in part for this very reason - that you are such catalysts for not only the good and great among the sudoku puzzle makers, but also for the novice makers and solvers. Thank you so much. (And thanks for this video - as always, very fun.)
60:01 I found it difficult to start, but approachable. I also got stuck around midsolve, but I managed to break through. Really nice puzzle
30:19 for me - I think I missed about as much obvious stuff as Simon did. 😛
Great puzzle!
25:31 It's possible to do better than 235 here - whichever cell has the 5 is going to index to the 9 in the 29 pair in column 5, which means the "23" half of the domino is in the same row as the 2 in column 5 and so must be 3, which not only turns the 235 in to a 35 pair indeed resolves it since there's a 3 clue in box 9...
Not only that, there has to be a 7 above that pair as it's the only high digit available for that cell and that gets more digits ib
In*
13:18 1's in B8 are in C6, which forces 1's from 1-4 clue at the top to B3, where 1-5-9 clue resides
Congratulations to GabeyK9 and grkles both! My boys (5 and 7) love this channel and I'm sure they'll be inspired by this!
22:55 for me! Very fun and impressive puzzle setting for someone so young!
It wasn't much harder without knowing the secret. The logic falls into place pretty naturally without having to know it's a repeatable trick. I had to come back to the video for help at the end because I was for some reason just blind to the 247 clue placing the 7 in box 4, but I had all but solved the 1, 5, and 9 columns by then
24:00 for me. i've been enjoying these 159 puzzles lately -- it's difficult to notice the clues but it works out in the end!
20:35 regarding the the ones, i find it fun to get the same answer using different methods, with the 789 in box 7 the 9 cant go there because the 159 clue, then because of that there becomes a pseudo xwing on 1s in r7 and r8 so in box 6 1 must be in r9.
It took me 50 minutes, unaware of the "159 secret" - although I did become aware fairly early that the columns can cause lots of clashes and would therefore be how I found the restrictions. The other thing I worked out that felt useful is that the three columns each had to have one 'self-reference' row and one 'feedback loop' row - e.g. one row where the 1 in the 5 column pointed to the 5 in the 1 column and back again. Same for a 1-9 combo row and a 9-5 combo row. A fun puzzle!
Simon: *has literally 3 squares left to fill*
Simon, every day: "I think we're finishing off...." 😆
Thank you so much! That was really fun to watch, especially as I could physically feel the fun, Simon had to solve this amazing puzzle.
While solving the puzzle without knowing the secret doesn't make it harder, it is true that some of the deductions could be made earlier.
However doing blindly would make the logic more linear and possibly more beautiful!
Anyway, it is a very beautiful and approchable puzzle!
42:41 for me…I don’t know if I’m just getting better at variant sudoku or the puzzles on the channel have been approachable lately…but I know if this puzzle was featured a couple months ago, I would’ve just filled in all the pencil marks and would’ve gotten stuck 😂
Edit: I should say well done to grkles and grkles jr. 👌
This was extremely hard for me, but I am pleased to say that I managed to solve it without any hints. Over the course of several days, haha. Very interesting and unique rules.
I definitely didn't think about the low-middle-high constraint and just built a lot more pairs based on the combination of indexing and the circle clues. For example, the twos in rows 4 and 5 form an X-wing pattern that locks two out of column 9, which locks the nine in box 4 out of column 2. Since nine must then be in column 1, it must be paired with a one in column 9, yielding another X-wing on ones. I think I solved most of the middle three boxes first, filling them completely with pairs or certain digits, then got most of the bottom before turning back to the top. There were a few points where I had to pause and look for places where the clues overlapped, but it took me about as long as it took you, which I always count as a great success, even though I don't have to stop to explain my logic along the way.
Well, I'm glad this wasn't one of the puzzles that stumped me. Pretty tough puzzle though! I'm still not sure how the puzzle worked after having solved it, I just banged my head on the logic until something gave way, but then again, I always feel that way at the end of an indexing puzzle. :)
Found the trick very early but somehow I made it hard to finish. 42 minutes for me, amazing puzzle :)
65 minutes for me. I normally don't attempt puzzles that have videos > 30 minutes, so I'm glad I tried this one. I didn't know the trick and found it got fairly difficult pretty quickly, and had to work a lot harder to get digits after the initial 1/4 in row 6
Very good puzzle! :) It took way too long for me (80 min including lunch :) ) But I managed to solve it without any help, and I enjoyed it :D
i feel like i went the long way around on this but i have never done a quadruple or 159 puzzle before 52:59. I built the bulk of the logic ( and some extensive pencil marks) around the 159 quadruples. Simons logic flowed much faster than mine. And the 159 secret makes so much sense
34:05 ... only a few more to catch up on now
Nice puzzle!
The intro screen says this is by Aad van de Wetering was that not yesterdays puzzle setter?
Well done young g&GK9!
Wow!!!! What incredible setting, super impressive, beautiful deductions all around, so many X-wings and cute tricks everywhere geez. Great solving too, well done Simon! Can’t wait for GabeyK9’s next puzzle!!! PS: the 3 in the corner didn’t get its song!
I've been wondering, for weeks now, what "3 in the corner" signifies in Sudoku? I must've missed the video where it was explained, but I've heard it mentioned [usually in comments] quite a few times now.
@@Radagast1953 Simon has a tradition whereby, whenever there is a 3 in one of the corners of the puzzle, he sings, “that’s 3 in the corner, that’s 3 in the spotlight, losing its religion” to the tune of “Losing My Religion” by R.E.M.
@@th.nd.r Thanks for the explanation! When I googled it, Most of the hits referenced that song [by R.E.M.], but when I looked at the lyrics, I couldn't relate it to "3 in the corner". 😏
As soon as you explained the rule with the low, medium, and high I was able to start. Got finished in a total of 59:33
Nice puzzle.
20:35 If you'd slowed down a little and considered the implication of R6C2 and R6C3 not being capable of being a nine... Where does the nine go in row 6?
In column nine of course as that's the only place it can go.
Oh man that "secret" is so obvious once you say it but it never crossed my mind. This was my first time doing a 1-5-9 and I definitely like the format! This one was a particularly beautiful puzzle with a very satisfying cascade at the end; great work by grkles & GabeyK9!
There was a secret, hidden fourth 9 in the clues! The 247 clue ended up having a 9 around it also, so it could've been a 2479 clue and would've worked the same.
I came to write this but found your comment
01:38:34 First time i try to solve a puzzle on my own. I have to say that wasn't an easy task, expecially without the secret! Much love from Italy♥
did it without knowing/remembering the trick: 54 minutes; but I'm usually no better that half Simon's speed, so I suspect the trick didn't matter much
25:45 Please, R9C9 cannot be a 3 due to the 3 being around the circle in box 9.
Therefore, the 9 cannot go in R9C3.
Also, there's a weird relationship between columns 5 and 9 in rows 8 and 9.
A five has to appear in column 2 and 9 in some arrangement. If R9C5 is a 2 it means R9C2 is a 5 and R9C9 has no possible value.
If R8C5 is a 2, then R8C2 is a 5, which makes R8C9 a 3 by sudoku. Which makes R8C3 a 9 by the rule.
9 would also appear in R9C5 which makes R9C9 a 5. Which one could have deduced by sudoku as well.
Either way, the 1-5-9 rule is really powerful when you have reduced the number of possible digits in the columns.
Oh and since R8C3 is a 9, R8C1 can no longer be a 3... So you get all sorts of a flurry of activity... If ONLY you'd realized that R9C9 can not be a 3...
The missing nine in the title appears in row 4 column 4. So they are all there, it was just hidden. Thanks for another great video.
Got it in 47:07. I didn't ever feel like I had a strong grasp of where to look next, just kept plugging away until I got somewhere.
I've broken the puzzle twice and started all the way over the second time. I'll come back later.
There are four 1s, 5s, and 9s around circle clues in the finished puzzle. It's just that one of the circle clues does't have the fourth 9 on it. So the title is "correct"
28:40 for me. Fun and a bit easier for me to work through than 159s usually are.
Oh neat! I just looked at the thumbnail - you used the actor for the show "Young Sheldon" (approximately 12 years old in this prequel to The Big Bang Theory TV show) The character, Sheldon, grew up to be a Theoretical Physicist. So nice tie-in to Gabey's age and grkles genius (literallly a rocket scientist?? wow).
How hard it was without the trick? About 80 minutes... Actually not bad compared to how I normally do compared to your time. Well, I sort of used the trick of course, but not as deliberate as you did. For example I could realize that 1-2 could not go in C1R4-5 since it would give a double 1. So some sort of "grouping" was done even though I could not formulate the rule as good as you did.
Lovely puzzle, I'm happy I managed to solve it. Mid way through the solve I was really worried about deadly patterns, I got way more of those than you did. :)
I didn't know about the trick mentioned in the video. Solved it in 29m24s. The trick would probably have saved me several minutes.
I've done a handful of these 159 puzzles, and somehow THIS is the first I'm ever thinking about applying low-middle-high digit logic to them, thanks to Simon in this video. I might go back and re-play some of the others I've done, I bet they'll be a lot easier with that mindset!
That ending was really tricky to figure out - And then I had a slight misscan/typo unwinding making me think I'd done a logic error at the last step but a quick rewind revealed my error as a simple misscan/typo.
4th 9 for the 9 in GabeyK9?
That was my thought too
Grkles said it was just a quadruple 159 puzzles, so the name should reflect that.
Not knowing the secret, that 3-6 pair found at the start was not found till much later, but the break for me was analizing the2 cuadruple around the center, (2,3,5,6) and (5,6,7,8) that there are too many 5s and 6s around that area helped remove some 5 and 6 from those cuadruples ending with something similar to what you found in them
Can confirm, it's a lot harder to solve this without knowing about the trisection of the indexing. Solved it in 63 minutes, so about 30 minutes slower than Simon, while I'm usually only about 10 minutes slower. Brilliant puzzle though. :)
34:13 only 24% slower than Simon on this one! I really enjoyed the logic of this one, but I lost about 3 minutes at the end staring at what felt like a bifurcated unsolvable massive deadly pattern before I realized the 7 had to go in R4C7 to satisfy the circle clue and that disambiguated the entire thing and the awe I felt as the whole thing unraveled was nice.
That X-wing of 36 was just hurting my eyes for sooo long =)
GJ tho
I love a good 159
16:10 Guessing he won't see this, but I've seen Simon miss a trick more than once due to eliminating corner pencil marks that are still useful. Keeping the '3' in the corner in these cells even when the central marks have been added (367) allows placing 3s in the corner of R6C2 and R6C3. Not critical here but has slowed him down a lot on previous occasions.
Nice!
35:53, just short of beating the video length! But I found this one hard to solve and was shocked when I was able to negate some digits from the fifth column at the start.
solved in 25:30 - made a few mishaps, but was able to fix them. fun puzzle!
I did not know the secret, nor did I discover it during this puzzle. It was especially the start which was a lot slower for me. I wasted a lot of time trying to figure out complicated patterns of the shared digits in the squares. Until I found out the question I should have been asking is, 'where do all the 1s, 5s and 9s go?' This gave me the same 1 as you did, but it took me 20mins probably.
28:33 for me. Fantastic puzzle!
90 min without the secret. Great puzzle!