Aren't Sudokus Meant To Only Have 81 Squares?
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- čas přidán 31. 05. 2024
- ** TODAY'S PUZZLE **
A lovely debut puzzle for Giesmania tonight and their sudoku Dark Magic. It's an 11x11 grid where you have to work out where to position the nine 3x3 boxes! And any 3x3 box not in a corner needs to be a magic square :)
Only 3 stars for difficulty and it might even be easier if you know one or two secrets!
Play the puzzle at the link below:
sudokupad.app/bhxcnaf8gg
Rules:
Draw 9 non-overlapping 3x3 boxes and fill them with the digits 1-9 such that no digit repeats in a row, column, or box. Cells outside these 9 boxes should be left empty. Any 3x3 box that is not in the corner of the grid must also be a magic square: ie Each 3-cell row, column, and main diagonal of that box must sum to the same total. Black dots separate digits whose ratio is written on the dot. White dots separate consecutive digits. A clue outside the grid gives the sum of the digits along the indicated diagonal. Digits along a thermometer increase from the bulb end. Digits cannot repeat on the blue diagonal. All clues inside the grid must fully fit inside the 3x3 boxes (except the blue line).
** PATREON BONUSES **
Simon's latest foray into the world of Islands Of Insight is available now.
They'll also be a bonus crossword video from Simon and his solve of Region Geometry by Emre Kolotoğlu (3hr 36min long...!) released over the weekend. And Simon's discussion video about Dean Mayer's Sunday Times crossword from last weekend will appear at 1minute past midnight on Sunday morning (which is the moment that competition has ended.)
/ crackingthecryptic
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▶ Contents Of This Video ◀
0:00 Theme music & puzzle intro
1:05 Crossword bonuses
1:33 Streaming next week
2:24 Happy Birthdays
4:40 Rules
8:38 Start of Solve: Let's Get Cracking
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Thanks for featuring my puzzle. Glad you enjoyed. I hope this gets as many views as the Aad van de Wetering puzzle 😊😊😊. To everyone who completed this puzzle congratulations 🎉🎉🎉🎉.
Very nice debut
@@donaldsnyder1543 ❤️❤️❤️
Thank you, this was such a fun puzzle!
I test-solved an early version of this one! Congrats on the CTC feature, that's so cool to see.
Just finished it and for me it's really one of the most elegant sudoku's. The logic flows so well.
My slightly cheaty secret for sudokus is that setters rarely pass up an opportunity for a symmetrical puzzle
Then my next puzzle will shock you 😮😮😮
@@giesmania3295😄
@@giesmania3295 hehehehehe.
@@giesmania3295 I will look forward to it. This one was a great puzzle
that next sudoku is live rn on the discord
The Werefrog kept hoping you'd realize the 2-3 on the dot couldn't be in a magic square because they add to 5 and would need the third digit to be 10. That would have made the 4-6 pair above the dot, and 3-7 pair below the dot at that point.
Sadly, you used sudoke to get the 2 knocked out.
Good to know that Maverick's investment in top tier surveillance gear is paying off.
My theory is, Maverick and Mark are friends, and, whenever Simon starts a video, Mark calls up Maverick and tells him to start buzzing past Simon's window.
Some effort should be put in to get this mysterius flyer/Maverick to, in some way, participate an video/stream in person
I love that some of the clue can be solved using sudoku but instead use the hardest way to see it. Never change, Simon❤
That was the most fun I've had solving a sudoku in a while. Definitely the most fun I've ever had solving a debut sudoku. Outstanding. The interactions between the clues were a joy.
Simon, you could have made a little more progress a little earlier down that main blue diagonal if you had noticed that 2 and 3 are not consecutive in a magic square, so r5c5 could never have been 2.
I am glad you liked it. Reading these comments is so heart warming, it was my second sudoku ever and I am really proud of it ❤❤❤
Lovely puzzle 👍🏻 Solved in 16½ minutes ⏱ thanks to prior experience of chaos construction and magic squares (and not needing to prove them even to myself, let alone to the audience!). Working out how three boxes fully on the negative diagonal restricted the position of other boxes was very satisfying!
23:50 - Simon rules out 3 from the black dots because the other cell couldn't be a 12, but he doesn't consider the other possibility, it couldn't be a ¾ either 😎
Glad you liked it❤❤❤
25:11
An entertaining take on the deconstruction puzzle and fairly approachable. Really nice to solve.
I am never disappointed in seeing a deconstruction puzzle for you to solve, Simon - and this one seems possibly to be in the realm of possibility that I could solve it! I will put it on my list and consider giving it a try soon. Meanwhile, I enjoy your divulging all of the secrets, and this puzzle had examples of many of your favorites! Thanks so much for this and for all that you do on CtC.
❤❤❤ Magic square puzzles!!! Also ❤️ hearing birds. Miserable rainy day here - I could close my eyes and imagine I was somewhere sunny with birds singing joyously!
great solve as always. i was wondering if simon would ever see that the 2 couldn't go on the white dot in the central box (it would go with a 1 or 3 and need at least 10 in the cell below for the magic square). it was available almost from the beginning. turns out simon found the most complicated way (solving almost the rest of the puzzle) to deduce it. Luckily for him, removing the 2 didn't help the solve too much other than limiting a few values on the blue diagonal, which didn't help anything until near the end.
Yeah nice work. I was scared that the 2 would give a lot away when I filled it in to make sure there was one solution. But it thankfully didn't help you much. But great deduction from your end ❤❤❤
first like from Pakistan ❤❤. 4 years and on. Thanks Simon
49:31 - Solver Number 666 😈😈😈
That was lovely. Knowing what I’ve learned from the channel about magic squares and 11x11 grids definitely helped!
Glad you liked it ❤❤❤❤. Nice puzzle number btw
yesssss!! I love puzzles like this because they're tough but very very fair! This was my fastest solve yet I think at 80 mins for a 3 star puzzle! Beautiful puzzle.
Glad you liked it❤❤❤
This is the first of the sudoku's featured on cracking the cryptic I've actually attempted myself and I managed to beat it after two mistakes :) This was a really fun puzzle thank you Giesmania for making such a great puzzle 👍
13:44 for me. Fantastic puzzle, loved it!
Glad you liked it. And very fast tho. That's a really nice time😮😮.
26:02! I'm very proud of this solve, that's a great score for me. Fantastic puzzle!
Nice score, and glad you liked it ❤❤❤
36:34, neat logic to finish the puzzle, though I did get by with "if this box is here" a few times, especially for boxes 3 and 6.
Nice time 🎉🎉🎉
From my point of view, the rules were state a little bit ambiguous. What does "a 3x3 box in a corner of the grid" mean in a deconstruction puzzle? Does this imply that box 1, 3, 7 and 9 are no magic squares, regardless of their exact position? It was only after solving the puzzle that I noticed that those boxes are all in the actual corners of the 11x11 grid. A bit confusing, though! But luckily, I managed to deduce that box 7 had to be in the bottom-left corner without assuming that beforehand.
Tnx for the feedback, if you have any idea on how I can make this clearer it would be greatly appreciated. Glad you liked it nonetheless. And a fellow Dutch person (I guess from your username)
I appreciate how Simon got the box in the bottom left: instead of seeing the 5's in the two rows where the box's center row is, he used math to figure it out!
Love the solves Simon, never stop being the wonderful you that you are!
Solved it in 66:31 :-) The last 3x3 box and associated little killer clue were hard to disambiguate, but an over-all joy to solve!
Yeah that was a bit of a hard part. But you also could have looked at all the possibilities of placing a 5 and concluded that there must be no magic square at box 7. But glad you enjoyed it ❤❤❤
I love being Simon's parasocial friend. I grin every time he tells me the secret again, as that means I'm one of his favorite people. Btw, Simon, the bird song (and even Maverik) is a lovely addition to the videos, so I think you can stop apologizing for opening the window.
39:00 Simon's scanning at its best - missed the fact that the upper blue box can only be a 1
Finished in 39:55. Had it pretty much figured out, but ran into a contradiction. Not really sure where I went wrong though. I backed up a little on some numbers, and re-solved it again and it came out correctly.
Fun puzzle!
Glad you liked it. And with a mistake it still is a very good time. Congratulations 🎉🎉🎉
Two evens and an odd are odd. Two odds and an even are even. Since the subunits need to add up to 15, that forces even numbers into the corners of the magic square. That's how I remember it, at least. Also found it helpful to mark all potential centers of a magic square; noting that such points can't be adjacent to any even cells, share a neighborhood with a 5, or touch the border or any part of another square (incl diag) narrows it down quite a bit.
I think the thing I loved most about this puzzle was that it started off giving you a magic box for free in the middle of the puzzle, and yet that magic box was the last thing in the puzzle to be resolved.
With the final box in the bottom left. Instead of the logic surrounding the white dot, one can just ask where the 5 goes if it was a magic square. That forces the square into the corner.
I always wait for exactly 2:00 AM (India) to see Simon's video, never missed a video since more than a year!
39:28. First time I've done one in ages.
Skadoosh!
Nice job 🎉🎉🎉
managed to complete it in 72:50, and there was only one place where i needed a peek at simon's solving path. yay!
This channel has taught me so many ways to think about numbers and it’s just so fun. I was able to plow through this puzzle because I’ve basically studied “professor Simon”’s variant sudoku courses. And it was so fun. I love deconstruction puzzles.
Like below if Simon’s chromatic sensitivities and preferences in these videos make you smile. 😂❤️💙💜🧡💚💛
Really enjoyed doing this puzzle, love how the magic square constraint worked
This was a lot of fun. I think there are some more things I could have noticed early on too but it still went pretty quick.
Some sodokus makes me happy, this one does. So beautiful ❤
My favorite “Simonism” is when he works out a cell using the twisted roundabout logic of the rules when there’s a sudoku answer sitting right there. Like the white dot domino in the last box. He eliminates thru sudoku all but 2 digits to say it can’t be a magic square and then misses the 5 elimination that would give him the 1 on top of the dot with a 2 that would have saved him all that thinking.
Great ideia for a constructor puzzle!
39:00
Well spotted, but this is what can be applied to the white Kropki dot in the central magic square box, too. A 2 over a 3 there would need a 10 below, so the 2 comes out (spotted at about 41:00 only by the 2 on the thermo)
If you see that early on the 46 pair in the corner cells of box 5 removes 4 and 6 from all other diagonal cells and resolve a lot of cells, the thermo is resolved from that and not the other way around, you have an 89 pair in the last two cells of the diagonal and more.
So, when you spot that early on, the solution flows is even smoother. Great construct!
23:50 finish. A fun puzzle, with some nice, easy to follow logic! Excellent!
Apparently white is not a possible color... 😉
Another way to help with setting the magic square pencil-marking, which is what I usually think about (once you have the 5) - The four outer rows/columns all have to add up to 15, which is odd. So they each need 2 evens and 1 odd. So the corners need to be even and the centers need to be odd.
The easier way to derive the magic square (after getting the 5 in the centre) is to realise that each side must have exactly one odd digit (you can't get three odds to make 15 without using a 5). The only way to achieve this is if the odds go in the centre of the sides, with the evens in the corners. You then obviously get 1 opposite 9 and 3 opposite 7. 9 must be flanked by 2 and 4, and 1 must be flanked by 6 and 8. It just takes a few seconds to work out that the 2 is in the corner between the 7 and 9, and the rest fall into place.
This was a lovely puzzle, made substantially easier by knowing all the secrets.
You could have gone further with the central square at the start and removed 2 and 8 from the diagonal. This gave 46 on the diagonal, putting 2 on the thermo in box 1, making the black dots 314, and 8 and 9 on the diagonal in box 9. The 314 meant 1 on the diagonal was on the thermo bulb, with the last cell on the diagonal being 7, and making the bottom left corner of box 2 = 8.
At this point Maverick could just be a soundeffect.😂 @Simon Have you ever met Maverick? This man is famous :)
75:57 The First time I was able to solve a puzzle that was more than 40 minutes long on this CZcams channel. Really had a lot of fun. I never thought the negative constraint on the diagonal would be so useful. It was fun finding out the possibilities where the 3x3 box could be based on the position of digit 5
Took me over an hour but still fun to do even for a beginner 😅 Now let’s see how Simon did it 🤔😊
Over one hour is fine. For a beginner it's really good. It took me 10 hours to set 😅😅😅
@@giesmania3295I think it’s great that you are taking time to respond to solvers of your puzzle and in some instances give them feedback!!! 👏🏻👏🏻
I don’t tackle many of these independently* but i got this one finished- it took a little over 2 hours but a success is a success 🎉
1:42:24
Amazing puzzle! Was my first magic square puzzle and went down a giant rabbit hole before realizing I had broken the puzzle by eliminating r10c2 as a possible central spot for a box, since I saw the 5 already in r10.
Definitely an interesting theorem about the deconstruction puzzles!
Fantastic puzzle
Wow… It took me 54 minutes to solve, but I never felt stuck - I just didn‘t recognize some of the implications as Simon did (for instance the white dot in c3 - I deduced the position of the 3x3 on a way more complicated path). Nevertheless the solve path I took was largely identical to SImon‘s, so I feel quite good about it.
Astonishingly, since Simon recorded the video, so in just 0.4 days, over 1.1k people solved it in the CtC software. That shows what a huge impact CtC and their videos have. Thank you for your work - my own history fits perfectly into the pattern: I liked logic puzzles (well, I wasn‘t very good at them, but I liked them regardless), but you managed to draw me into solving more puzzles than I ever imagined. I started just watching videos in awe (also, I - like many others - found out the soothing effect Simon‘s voice has when I struggle to fall asleep) but now I‘ve reached a point where if the video isn‘t too long and/or the video looks in some way understandable to me (as in I immediately have an idea where I _might_ be able to start), I go ahead and try solving it on my own. Sometimes, I get helplessly stuck and return to the video, but this becomes less frequent. Without CtC, I most certainly would never have started doing this (and training my logical skills that way, too).
Beautiful puzzle... excellent logic n nice flow...had a x wing of magic square namely box 4 n 6 but forgot about the little killer then saw them n then it finished
Finally, a puzzle that I'm actually able to solve by myself.
I think in one of the early deconstruction videos I shared a proof for the positions of the boxes in 11x11 deconstruction puzzle that used Proof by Rearrangement. Always fun to see these type of puzzles
24:14 for me. it was quite fun.
Glad you liked it
24:18 for me. That was a smoooth puzzle to solve
6:20 I actually watched that part again. LOL
What a wonderful puzzle :)
This was a perfect puzzle for me. Very creative but not too difficult.
19:55 Simon takes out the 89 and 78 pairs, misses that it can't be a 12 or 23 pair for the same reason that the maths don't work, which puts 1-9 in the middle column, and removes the 46 from the 7th square. He gets the 19 in the middle, and removes the 1 from position 4 at 26:29 from box 8, at 41:07 removes the 2 via the diagonal, at 41:54 removes the 4 and 6 via the diagonal, and at 42:44 finally gets around to using the white dot, but just to get a four.
What a fun puzzle! My time today was 33:03, solver number 681 (a nice 15 sum, although not good for magic squares since the evens are consecutive).
Glad you liked it❤❤❤
This sudoku was great!
I've been paying attention to the examples Simon uses on thermometers and stuff like that, when explaining the rules, and I'm waiting for the day when he actually guesses right. This one came close (just one digit off on a 4-cell thermometer).
Nice one, thanks, and not too tricky.
You need to find out who Maverick is and tell him hes a celebrity in the sudoku world
Where can I find SudokuPad puzzles that aren't featured on this channel? This was a decent difficulty, several that Simon solves are a bit too hard or too long for my taste.
49:14 is my time. Wasn't difficult. Just took time to work it out. Nice one.
Great puzzle, few and far between I solve a puzzle that Simon attempts on my own, but I got this in 88:09. I missed the 3/4 ratio dots and attempted to solve as standard dots for a bit.
This puzzle was somewhat challenging but very doable and very fun!
at 40:40 you can use the 3 boxes gray green and pink to unwind pink. in the middle row its 618 375 294. the row one higher is 753 XXX and from the remaining green box its only 618 left. so the pink XXX must be 249
At 39 minutes mark, does anyone want to tell Simon about the 5 in box 9 looking at the white dot in box 7?
Few missed tings by Simon.
The central square could be reduced to pairs straight away. Simon did the first step on the white dot - removed 9 and 8 as options, but same could be done also with 1 and 2 (it needs 10+ in the third cell for magic square).
The location of the final box was also much easier than Simon made it look. We have two 5s occupying rows 7 and 8. There is no way that bottom left box is a magic square, you cant "center-5" it. So it has to go into the corner.
Then again, Simon had much more elegant solution for finding middle-right box, it took me ages to disprove possible locations of both upper-right boxes using diagonal 6 constraint (but it still could be done), the elegant "can't be column with 5 because of 1-3" completely flew over me. So am in no position to criticize.
31:38. Trying to figure out the bottom left and to right square positions I was trying to line up where the 5s in the center could go. When realized I broke it was gonna give up but reread the rules.
Very beutiful puzzle.
I think the most elegant reason the evens are in the corners it that if we put odds in the corners, each external edge would be the sum of 2 odds and 1 even, and therefore be even. Secret: 15 is not even
You could have solved bottom left box a lot sooner and easier =). There were 6 possible positions for the box, 5 of them would have been magic boxes, each of which would have broken sudoku wtih the 5's in r10c7 and r9c11. Solving it with the White dot logic was really cool tho.
26:09. It was a nice little puzzle. Or big puzzle. Whichever.
Glad you enjoyed it ❤❤❤
The white dot in the middle actually did more work than shown. But I probably wouldn't have broken into the puzzle nearly as quickly.
Plot twist:
Maverick is one of Phistomefel’s agents, spying on Simon with a drone to find out when he plans on getting cracking.
And then jumps into his plane to torment him, on a daily basis, pleasing the dark magic lord Phistomefel.
Speaking of Hot Dogs: my secret fantastic topping for them is kimchi. Sauerkraut is a well-known popular dog-topper, but kimchi adds a layer of spice and funk and it’s excellent on a dog.
35:46, a fine score for me, but I got to finish with the 3 in the corner which is quite fun.
Finished in 37:53 with help from the video.
@30:42 Maverick returns with an A-10 Warthog
Managed to complete this beauty in 43:29, but I didn't need the 22 clue. Did I make a mistake, is this clue essential?
I don't think you can disambiguate the central box without the 22 clue. You can get to the position Simon reaches at 42:28 in the video, but without the 22 clue the central box can be completed several ways.
Edit: Well, two ways. Once you pick a 4 or a 6 in the top left, the rest of the box fills in using the magic square properties.
29:41 Love the fact that Simon refuses to use the 1 and the 3 looking at box 2 and insists on using magic square rules. And even when he uses the 8 looking at it, he still ignores the 3 immediately above it! Does he do it deliberately to make us feel clever?
39:38 And then he works out the last square by using the white dot to prove that it is not magic and therefore in the corner, rather than the two fives which have been looking at it for ages!
But actually this is fantastic setting to allow different approaches to the puzzle depending on your strengths!
Maverick always knows
Took me 87 min but I got this one on my own. Wow
It took me too long to realize that the top left thermo does not break the rules by not fitting into 3x3 box T_t
I’ll always approve of green and orange together because they’re my school colors! #ItsAllAboutTheU
28:40 And, of course, you can't have another 1 in row 1 when there's 1 already on the thermometer, a more obvious way to solve those 1-9 than doing math.
41:38 for me
nice puzzle
does this sudoku variant have a name?
39:00
Classic Simon proving r9c3 is not a 5 by using magic square logic instead of sudoku
38:50 You don’t actually need this white dot to rule out square to be magic. Because rows 9 and 10 already have fives in it
a 2/3 dot in a magic square doesn't work. They add up to 5. You'd need a 10 in the last digit.
33:18 for me.
21:30 for me
12:20 for me
Nice puzzle and not too hard. 33:57 for me
39:06 for me
16:16 for me.