Incredible Sudoku Brings Tears To This Solver's Eyes
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- čas přidán 13. 06. 2024
- ** TODAY'S PUZZLE **
A debut on the channel today for Tacosian with an absolutely jaw-dropping sudoku. It doesn't look like there can possibly be enough information given in the grid for this to have a unique solution and yet the way it unwinds is absolutely breath-taking (or tear-jerking). An all-time classic.
Play the puzzle at the link below:
sudokupad.app/1p9vh22zea
Rules:
Normal sudoku rules apply. Adjacent digits along a green line must differ by at least 5. Digits along a thermometer must increase from the bulb end. Cells separated by a white dot must contain consecutive digits. Cells separated by a black dot must contain digits in a 1:2 ratio. Not all dots are given.
** NEW SANDRA & NALA FOG PACK **
A bonus sudoku pack was released on Patreon this week of 5 fog of war sudokus to celebrate the arrival of spring (in the Northern hemisphere) from Sandra & Nala. It's completely free - just click our Patreon link below.
Other treats on Patreon include:
- the new James Bond sudoku hunt competition;
- Simon's latest forays into the world of Islands Of Insight;
- Mark's video looking at the new OneUp puzzle from Rodolfo Kurchan;
- his solve of Region Geometry by Emre Kolotoğlu (3hr 36min long...!);
- and Mark's latest solve of The Times Club Monthly cryptic crossword
/ crackingthecryptic
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▶ Contents Of This Video ◀
0:00 Theme music & puzzle intro
1:12 Quad Code by Marty Sears
1:43 Bonus video tomorrow morning
2:03 Patreon update
2:11 Happy Birthdays
4:45 Rules
6:29 Start of Solve: Let's Get Cracking
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"If we can count to 4 we might be able to make progress." The most advanced sudoku technique.
I love how Simon is always amazed when the digits move. He has noticed it many times over the years yet he always forgets and is amazed. It always gives me a good laugh
Yes, I thought it was specifically funny that in this video he actually said something like he's never noticed it before.
@@chris5619, at 31:40, he said, "I've definitely noticed that before!"
@psiphiorg I hear, "that's definitely moving digits, that's really peculiar, I haven't noticed that before." (Sort of like I'ven't)
Thanks for the shout out!. Your pronunciation was spot on!
That sudoku is absolutely world class. I would be very interested in 2 special videos, in which Simon and Mark both name their 10 favorite sudoku's of all times (or 100, I would still watch!)
You don't often hear Simon call a puzzle world class but the psych-out Phistomefel Ring that actually was used as a construct for the thermos and the german whisper by proxy to undo the Kropki dots. Tacosian that was a FANTASTIC puzzle. Top notch solve by Simon too. Just wow, all around.
I didn't notice that this is the debut of Tacosian, as Tacosian's puzzles are always brilliant (over 90%) and fiendishly hard (5/5 difficulties)! I hope they could be featured more in this channel.
The most impressive part of this video is actually Simon going backwards in the middle of the alphabet at 13:45! I barely can spell out C-B-A or Z-Y-X...
Petition for a cooking special episode where Simon and possibly Mark bake a chocolate cake
Mark can do the cake, Simon can do the frosting 🤤
Mark talks about taking the roast out of the oven so maybe he can cook. I don't picture Simon in the kitchen but who knows.
Only if it's in the shape of a teapot
Big yess !!
they should actually make a chocolate teapot
Tacosian, this was brilliant! Remarkable debut. Those steps with the black kropki, short thermos and German Whisper were sooo satisfying. This was a perfect demonstration of setting something really interesting and fun with just standard constraints - something I always associate with greats like James Sinclair, but this was up there alongside his puzzles in terms of genius and elegance. Rapturous applause. PS: Thankyou Simon for the unexpected shout-out at the beginning... a lovely surprise!
Rules: 04:54
Let's Get Cracking: 06:33
Simon's time: 46m34s
Puzzle Solved: 53:07
What about this video's Top Tier Simarkisms?!
The Secret: 5x (17:31, 17:34, 19:37, 19:40, 36:00)
Maverick: 4x (15:12, 15:15, 32:55, 43:57)
Phistomefel: 4x (00:35, 06:40, 07:03, 07:48)
Chocolate Teapot: 2x (49:36, 49:38)
Bobbins: 1x (46:25)
Knowledge Bomb: 1x (31:50)
And how about this video's Simarkisms?!
Sorry: 12x (11:45, 19:50, 22:11, 35:09, 35:55, 37:02, 37:41, 39:39, 43:31, 43:57, 48:31, 49:23)
By Sudoku: 12x (10:03, 21:31, 26:30, 30:50, 32:17, 36:52, 38:10, 38:48, 46:11, 47:03, 47:09)
Ah: 8x (08:46, 09:34, 11:22, 16:18, 17:10, 27:19, 50:05, 50:05)
Hang On: 7x (20:42, 30:04, 38:53, 42:30, 42:58, 47:25)
Weird: 7x (11:58, 24:48, 37:32, 41:00, 42:41, 43:19, 53:27)
Brilliant: 6x (40:41, 40:44, 45:02, 45:04, 45:11, 45:13)
Pencil Mark/mark: 6x (38:15, 43:40, 44:23, 49:43, 51:11, 52:33)
Lovely: 5x (29:17, 29:20, 30:58, 32:00, 32:00)
Goodness: 4x (40:37, 44:01, 44:53, 52:57)
The Answer is: 4x (19:45, 32:04, 41:22, 41:43)
Clever: 4x (01:49, 17:21, 44:15, 53:35)
Cake!: 4x (02:33, 02:37, 04:11, 04:44)
Beautiful: 3x (40:41, 40:50, 42:05)
I've Got It!: 3x (29:07, 29:07, 29:07)
In Fact: 3x (26:27, 38:57, 45:07)
Nature: 3x (17:51, 17:55, 24:58)
Extraordinary: 2x (00:23, 06:23)
Gorgeous: 2x (41:53, 51:21)
Good Grief: 1x (40:44)
What a Puzzle: 1x (52:57)
Naughty: 1x (38:59)
Fascinating: 1x (04:07)
Elegant: 1x (41:57)
Ridiculous: 1x (45:23)
First Digit: 1x (47:56)
Take a Bow: 1x (53:37)
Discombobulating: 1x (40:18)
Come on Simon: 1x (25:17)
Shouting: 1x (04:38)
Famous Last Words: 1x (51:35)
Bizarre: 1x (00:45)
Proof: 1x (14:22)
Obviously: 1x (08:37)
Whoopsie: 1x (52:28)
Progress: 1x (37:14)
Wake Up: 1x (33:01)
What Does This Mean?: 1x (30:31)
Unique: 1x (06:25)
Most popular number(>9), digit and colour this video:
Ten (5 mentions)
Five (88 mentions)
Yellow (24 mentions)
Antithesis Battles:
High (4) - Low (4)
Even (10) - Odd (4)
Lower (7) - Higher (0)
Black (8) - White (4)
Row (11) - Column (11)
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!
How does this work? It didn't have time to watch the video. Did it just scan the video incredibly fast?
AI probably, or early patreon release maybe?
@@Dani-Elle- pattern. This is usually the 1st reply to videos
@@ericveneto1593but having the timestamps. Of all those specifics. Or are they an editor?
@@Dani-Elle- Patreons see puzzles early
its probably a chocolate Heath Bar cake. Heath Bar is a toffee candy bar in the US. Very good to crush up and add to cookies, brownies, etc.
Heath pieces are SUPERB in baked goods. Great shout.
Seconds after Simon makes the clever remark 'if we're able to count up to four...' he forgets to apply it in the central box.
This is fantastic. What a puzzle, and what a solve. I loved it - thank you so much, Simon. When you enjoy solving a puzzle, it brings great joy to me as a viewer.
Simon instantly realising an issue would come with the middle digits of the chain crossing over (e.g if use 3) shows power of his brain
And with the termos. Took me ages to find that beauty.
This is indeed a very ingenious puzzle, which almost brought me to tears, tears of frustration as I couldn't finish it. What Simon spotted which I didn't was r2c2.
This is a very pretty puzzle 🥰 To split the digits into highs and lows and then do thermo-9 logic on 4s is pretty great, I'm not sure I've seen that used as such a pivotal part of a solve before.
“We might have to colour you know.” The grid pretty much already smothered in yellow and purple :) You make me laugh Simon. Another reason I’ve been enjoying this channel for the last 4 or 5 years.
That trick in the lower left box is real genius !
What a beautiful puzzle - and a beautiful solution. It was awesome to watch
I finished in 70 minutes. I filled in most of the grid 40 minutes in and struggled to make progress. I finally figured out after a long time that r8c2 couldn't be a 7 because it would force 12 pair to be separate from each other ruining either thermo in column 3 or row 7 from being a 12. After that, it completed itself. Great Puzzle!
Beautiful SudoKU !!!! Thank you.
I really enjoyed that. Such a wonderful channel.
There's some filthy logic in this puzzle. Great job!
I was really hoping to do this one myself but after 45 minutes on and off for a couple days I'd gotten to where Simon was at 28min (except I'd coloured a lot more boxes) (still pretty proud of my progress! ) but had to come get help from the master 😅 pausing the video after the minute 29 revelation to try and continue alone again ❤
Lovely puzzle, beautiful solve!
Thank you so much Simon for showing such an elegant solving path ^_^ I came back for your explanations, being unsatisfied by my try & fail method.
Maverick forgot to set his “they’ve started recording” alarm.
That was a beauty all right. Thanks!
An absolutely brilliant puzzle.
It just gives me such joy to wrestle with a game, get STUCK, then discover that Simon got stuck at the same point! It took me 96 minutes, not counting one restart.
14:16 for me. Fantastic puzzle, loved the break-in!!
Yup. Really clever. I enjoyed this one.
Seriously beautiful. Magic geometry. Another milestone in the history of human creativity.
👏👏👏👏👏👏👏👏👏👏👏👏👏👏👏👏
Simply beautiful
Interestingly, I didn't break in using box 7 at all. I quickly surmised that the corners must be 159 by thinking about where on the ring the digits can change direction (because they must at some point). I then noted that 9's in box 5 must be along C5 and R5 only (due to the thermo bulb properties). From here, I used the whispers in boxes 2 and 6 to determine that the ring segments in those boxes could not both be high, otherwise the only digit that works in the middle cell of the whispers would have to be 9, leaving no place for 9 in box 5. This removed the 9 from the R3C7. From here, the 3's were placed on the ring in box 2 and box 6, bouncing back to placing the 1 in R3C7 and disambiguating the entire ring.
Early bird today! Looks really interesting - I always love (watching Simon solve) puzzles that seem impossible (to me)
All of humanity is in that little green dash
41:30 That was the breakthrough I needed. I got stuck at the same place.
Lovely puzzle
"It's moving digits. I hadn't noticed that before" - other than the last 3 times you've noticed it. :D
I don't believe that there is actually a Maverick. I think that its a sound that Simon plays every once in a while and says that its Maverick...
👍🏻👍🏻 Great puzzle! And you had a much more elegant way of determining the 6/8 • 3/4 kropki than I did (I can't even remember what it was, just grinding through other digits elsewhere I think!)
Of course I needed your help but it was a very fun try for me 😊
very happy with my 25 minute time :D. Was a very nice puzzle indeed with that circle of kropki dots giving so much :D
You can unwind most or all of the yellow with doing Sudoku on box 9. Don’t resist.
Are you starting your recording on the exakt same time every single day and Mav around the same time or is it the other way around? :)
This is the important question!!!!❤
one of the most brilliant puzzles on the chanel, like every day, according to simon. 🤣
Another terrific puzzle.
I was doing reasonably well, teasing out the same logic as Simon (only at my own, slower pace), until it came to spotting that r2c2 was restricted to 2 or 4. I must have spent 15 minutes staring at the grid at that point, simply ignoring the top left 2x2 as not possibly being important, being so empty. Eventually, I had to look there as there was nowhere else left. Getting the 24 pair in row 2 unlocked everything!
Solved it with help from the video.
Finished in 36:36 by following along with the video.
Nice logic in this puzzle! My time today was 35:51, solver number 6129.
It does sort of use phistomphel or more the leftovers...in a ring puzzle the cells r7c8/9 and c7r8/9 can come into play..as they did here
That was a cool puzzle and I enjoyed the break-in. That said, the only nit-pick is that the uniqueness problem between boxes 5 and 6 is so obvious right at the time when you get stuck at the final valve and might miss the color of r2c2, that you are very tempted to put the bloody 8 in the middle of the grid already. Which I did, because I indeed missed the color of r2c2 and didn't want to waste an hour while making my eyes bleed.
New CtC book confirmed!
41:13 is right where I got stuck in my puzzle, glad I stopped because I was never going to get that logic
lol once I put that 3 in there, it took me like 20 seconds to solve the rest.
That dot arrangement is in your domino sudoku. If I recall the only valid corner digits in general are 1, 5, and 9.
70:11 with some stormtrooper scanning
At 45:25 I figured a 34 pair couldn't be in box 9's thermo because it creates a unique rectangle of 1s and 2s in boxes 4 and 7. Then you know the 3 in column 9 is in one of the phistomefel cells in box 9. From there we can figure out that 3 in box 1 has to be in r1c3. Really interesting that the logic and order of deductions was so different between my and Simon's solves.
Let's give it a shot :)
Maverick has to have bugged the house to know to fly by lol
48:16 for me. Beautiful puzzle!
73:19 for me. What a great puzzle.
75:34
Superb!
Can someone explain to me how he comes to that conclusion at 41:55? ive been doing it myself and got stuck a bit further than that, but have not solved the upper right black dot. I don’t understand the conclusion as to how it is ONLY solvable with a 3:6 set with the information present at that time
First is to see the two thermo's can share no digits. If they did, it breaks region 7 (lower left 3x3), coloring explains this. Since they are 4 pink cells, they are 4 separate digits, 1,2,3,4. After that, you can see that there must be 4 in the end of one of the thermo's. However if r2c8 was a 4, you could place no 4 at the end of either thermo. Therefore r2c8 is a 3. Does that help?
49:56, but I spun my wheels for like 20 minutes before looking at the video to see how r8c2 was an 8. I went down that thought path at one point, but for some stupid reasons, I figured one of the digits had to be a 2, not a 3.
This was really good. It took me 2 hours and a little bit of help from Simon.
That tends to be my method for trying to solve these, at least partially, on my own. Watch long enough to get a plan of attack, and then back to the video when I get stuck.
@@enericm Same here. And after my solve I watch the video completely and am really proud of myself, if I noticed something much earlier than Simon did, or I came to a conclusion much easier than he did. This happens only occasionally, but I'm proud, that it happens at all.
I'm always amazed at how accurate Simon is. This was one of the few puzzles where I had no mistakes in what I did on my own.
@@enericm Simon is verey accurate, indeed. But sometimes he does things overcomplicated. And sometimes, it seems, that he gets overtaken by his own thoughts, if you know what I mean. Then he takes a breather and tries to explain his overcomplicated thoughts, for conclusions, to which he might have gotten much easier on a different path.
I can't believe Simon forgot the corollary of the Phistomefel ring that if there is a digit missing from the ring it must appear in the center of box 5, and there can only be 1 digit that is missing. With the forced consecutiveness of the ring there are either no missing digits in the ring or 4 missing digits and as such the must be no missing digits and 2 corners must have a 5 in it with the other two being a 19 pair.
I thought that corollary only applies in knight's move or diagonal puzzles, not in general.
@@Anne_Mahoney That might be the case.
Today on CTC I found out my age is a more extreme version of 10. Simon, he knows me.
The deduction at 41:50 took me forever to see in my solve :S
33:58 for me. quite hard for an half an hour sudoku. I enjoyed the challenge.
I solved this one in a similar time to Simon, and the first half of the solve was fun to puzzle out. Then I spent almost as long making little or not progress because I just couldn't see the way forward. Eventually got there, but I find such puzzles tiresome tbh.
Not sure crocheting WITH a cat makes more sense than crocheting a cat... I've always used a crochet hook, myself.
Crocheting with a cat can very quickly descend into a wool fight...
One of my cats has a very stiff tail, which I bet I could use as a crochet hook if I needed to. 😸
47:37 we now know where 4 is in box 3 right??
lol i always find different and more harder ways to find the first digit than simon and mark. Simon uses Box 5 thermos and i used box 1 and 9 thermos. because the 19 pair was the same. it forces the pair in box 9 to be in column 9. which has a thermo outside of the corner squares in column 9. and it also does the same in box 1 where the 19 "pair" is forced to be in row 1 with the thermo outside the corner squares. there is only 1 of each 1 and 9 on the outer ring which makes it only possible for both the 1 or 9 to only be in 1 corner box on the whole puzzle. because of that it forces the 19 "pair" to be on the thermo so it makes the pair a 1.
"Sorry I haven't been talking that much" he says after yapping for 5 minutes without end
32:39 for me
took me a while to spot r2c2
Really enjoyed the puzzles and Simon's solving, but the explanations feel like we're being treated like grade schoolers. Best of luck.
That's probably because, from the letters he gets, he knows some of his audience are grade schoolers. He's always played to the younger end of his audience.
I sometimes wish he would point the camera at his keyboard instead of his face. Why he needs so many keypresses to add a single pencilmark is beyond my understanding.
00:57:24
Can anyone tell me... @ 37:46 why a 9 in that domino? Why not in one of the digits directly above that domino?
There are 4 yellow squares in the bottom row. The other 2 don't contain a 9 so it must go in box 9.
@@waynegjohnston thank you!
It seems obvious now. LOL 🙃
I had to scroll a lot for that question.
40:39 isn't this a kind of empty rectangle... "the most under-used sudoku technique" ? ;)
It always bugs me when Simon doesn't select yelLOW for low digits 😖
I genuinely miss the days when hour long videos were the occasional exception/surprise and the puzzles posted were something the majority of us viewers would be able to tackle alongside you rather than just sit and passively see you guys solve the behemoths.
Agree, I miss the 30-45 minutes videos. And with no shout outs or happy birthday wishes. Just 30-45 minutes solve with good puzzles. The Miracle Sudoku is one f my favorite videos of all time just because of that is short, interesting, and somewhat approachable.
A video over 1 hour my ADHD brain can't handl3, I can watch it but often over multiple of days. So I really like the short ones. Birthday wishes and shout out I often skipped past if the aren't not catching my Ipeye in the timestamps..
@@LillaJag I don't mind birthdays. I understand why they are done, they create a community; plus they've been a thing since the early days of the channel. They are relatively easy to skip too.
What I moan is the lack of variety. It's brain frier after brain frier, advanced technique after advanced technique. The channel used to be a place that introduced the hobby to thousands of people and entertained all sorts. Now it's just an echo chamber for puzzle experts.
@captainufo4587 Agree, I miss as I said the 30-45 minutes videos. The more approachable sudoko and not just brain friers. Some of them is fun but I want varerity also, the way it was before
Mark's videos frequently feature easier puzzles, and I thought this one was quite approachable as well.
@user-gj4ml7su3n The problem is that I don't like how he is playing. Its the sound and the quality of the video I think. But I know I need to get it a chance but I like Simon more and therfore I wish he played more easy ones.
And it's nothing against Mark as a person, I like him also but It's my personal preference. That Simons videos are higher quality. But yeah
Holy hell, that took me 92 minutes, but when it came together it was incredible.
25:28 for me
I don't know how you got 9 limited to R8 in Box 8. So I don't agree with 9 on top of 2. It might be right, but it doesn't have to be at this stage.
We know that 9 in Row9 must be in box9, since we colored all the high digits in that row. So, 9 in box8 is in row8 by sudoku.
@@enchanter1520 oh ok
mmm, battenburg
oh no, it's gone mouldy in places now :(
That was tough, over an hour for me. I couldn't figure out the next logical step after solving the ring and determining that R2C8 could not be a 4 (because it forces 2 4's into box 7), ended up bifurcating R7C8-R7C9 to solve that thermo and the whole puzzle cracked after that. Not satisfying, going to have to watch Simon's solve to see what he did there.
Edit: I missed that the 2-cell thermos are a 1234 quad >.< That's really all that my bifurcation was doing.
47:22 for me - it was a little hard to see the last piece of logic to finish the puzzle.
60 mins for me, but birfurcated at the end as I didn't see all the logic. Enjoyed watching after to see what I missed
At 36:46 Simon arbitrarily decides that there must be a 9 in 2 or 4 possible squares without explaining how he eliminated the 9 from the other 2 squares. Does anyone know the logic there?
See answers to @ruminator‘s comment below.
9 has to appear in yellow in row 9, and all four yellow cells are known.
@@RichSmith77 Thank you.
46 minutes
No Simon, the digits aren't bouncing. you are just losing your mind slowly but progressively over the last few Sudoku 😛
They do move! Very slightly but they did in fact move when he said they did
maybe someone should construct a puzzle where each row/column/box must contain digits 1-9 but the digits also move and normal sudoku rules must be obeyed at any point in time 0 < T < infinity, not just at time T=0😁
why would letters make it easier to explain when it's the exact same with numbers? Oo
Somehow it’s not, though!
He likes to be rigorous in his proof, which is admirable in my view.
You or I would probably be happy, after we'd seen it was the case with a specific digit, say 3, to say "obviously, it works the same for 2,4,6,7,8". Simon understands this too, but he wants a way to prove it, without having to go through each case separately.
53:54. Within minute figured our the corners of the white dot squares were 1595, but didn't know which way. Tried having a 5 in UL corner. Then determined which corner needed the 1 by eliminating one because it caused the puzzle to become unsolvable, so I knew the 1 had to be upper right (if the 5 I the upper left was correct) the rest I did mainly eliminating candidates and trial and error. Luckily the 5 ended up in that spot and not upper right because I'd have to do it all again. I spent to much energy focusing on the ring/corner trick ( why am I forgetting the name of it) but ot did eventually come in to play for me near the end. Was a rough one and only solved with lucky breaks on trial error method. 4 of 10 stars
Simon seems to be so dumbfounded that he can hardly finish the puzzle.