This Puzzle Was Made By A 12-Year Old!!

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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:

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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We've completely revamped the interface. Now you download the basic app free and you can choose to download additional content. So there's a FREE pack of puzzles by Prasanna Seshadri and a paid pack: DOMINO SUDOKU!!! Prasanna's free pack includes one puzzle for each variant of our existing apps (so there's a killer sudoku, a miracle sudoku, a thermo sudoku, etc). Domino Sudoku is a pack of 100 handmade puzzles (40 on launch, 5 added each month for a year) by some of the best constructors in the World: Phistomefel, clover, jovi_al, Christoph Seeliger, Qodec, Sam Cappleman-Lynes and Richard Stolk have all contributed sudokus!!

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WOO! My kid is so excited, I'm gonna watch it with him tonight :) :)

grkles
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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 ;)

grkles
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25:51 "you can come to an absolute grinding halt" hovering over the 36 pair in the box. Never change Simon, never change.

sonalita_
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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.

randysavage
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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...

HunterJE
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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

Laura-vsfs
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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.

majora
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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 ❤️

dominatorbuzz
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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.

DArtagnonW
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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!

markp
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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.

Fogmeister
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Thank you for the birthday wishes and a happy 5th birthday to cracking the cryptic!!!

meganhorton
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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!

inspiringsand
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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.

tobyonatabe
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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!

Draenith
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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 😂👍🏻

TheShadowplayer
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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.

joelstevens
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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!

HotCrossGuns
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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.

Chockrit
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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

VenomMorph