The New Sudoku Trick That Almost Nobody Knows
ฝัง
- เผยแพร่เมื่อ 30 ก.ย. 2024
- Today's puzzle is another classic sudoku by shye. Immediately we therefore know it'll showcase a completely new technique! Can you spot it? You can play the puzzle at the following link:
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Rules:
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At 7:32, Simon is "stuck" and asks "So, what should we do now?" Unfortunately for him, he can't use the trick that has worked for me 100% of the time -- stop trying to solve it and watch the video.
Exactly what I did! 😂
Worked for me haha
Haha me too!
Me too. I only needed one “little” clue. I am getting better by watching/solving but I am terribly slow 😂
@@cluso9985 Yes, as soon as he got the big AHA (that "4" at C4R7), I stopped the video and was able to go over and finish the puzzle on my own.
nothing has striken more fear into my heart on this channel than seeing a puzzle with the only rules being "Normal sudoku rules apply"
True
I downloaded the CtC app to see what I could achieve... All went well (but slow) until I came to a "normal" sudoku.
I'm far from a genius but I couldn't see how to crack it and had to use the 1st hint to see how to look at solving it.
I think it's 'struck'. Nothing has struck more fear into my heart. Yeah. That sounds right I think. Sorry, I normally try not to be a douchey grammar policewoman 😂 but I just had to drop a note here. Happy puzzling 🫡😊
@@daniellehallihan6015 Thank you, your kind words have stucken my heart
stricken
I can't deal with the fact that Simon just says "these digits are SUS" now
I saw the four vent!!!
Came here to say the same thing. So good.
Like, why did he say that? He's clearly not in the joke, didn't seem the type to meme around, he's pretty serious. Maybe he heard other people use it and just sort of accidently internalized it? That's really weird.
@@luizzeroxis i could see him playing some among us on his down time. If i was a killer in his lobby I'd kill him first. His puzzle solving skills are too good. (edited due to typo)
@@luizzeroxis 'sus' is also just a contraction of 'suspicious'. it's been around in english for quite a while. among us didn't invent 'sus'
wonderful solve! especially given the time pressure 😅 you explained the trick exactly the way id envisioned it, always so happy to see that ^^
and happy birthday to mr anthony!
Amazing puzzle, Shye! Thanks for sharing it with all of us!
Great puzzle! I feel like the box of "maybe a bent triple" combined with the "crank handle" makes a shape that looks like a cell being divided - is that where the name comes from?
Wonderful puzzle Shye! Thank you! .. I would be curious your thoughts re applying the '"slot machine" method to this one, and whether it appears to disprove the "elbow digit" theory?
Amazing puzzle, well done!
Thank you for this gem of a puzzle
Thanks to my fitbit I noticed that when I watch CtC videos my heart rate is at its lowest 😅 Cracking the Cryptic scientifically proven to be relaxing! Hope you enjoyed your lunch Simon 😊
And at it’s highest when I try to solve one on my own!!!!!
Are you even calm when a "cell entirely lets itself down"?
; ^ )
Do
Quite the opposite for me
Makes me want to wear mine again
Binary fission is a method of asexual cell reproduction where it basically splits into two identical copies of itself. Thanks for the tremendous content!
that's a good hint. If you pencil mark all the possible positions for 1 in the grid and color code them properly you are left with at most 2 options for every box and r7c4 gets resolved that way, because it's not a possible position for a 1.
@@davidc1633 That was my conclusion on the title. :)
Also nuclear chain reactions. It's a hint that it's a convoluted chain I think.
my heart skipped a beat when simon said "sus" LOL
I hope he says it every video from now on.
Simon looks especially handsome today! Happy Birthday to Simon's dad.
"That's the world's most disappointing three". I feel bad for that three now. However, I can't help but laugh lol
I actually laughed out loud at that "world's most disappointing 3" comment. 😀
There is an entire class of techniques like this called "Krakens". In each case, the logic is: either this chain is true, or there is a technique here (y-wing, swordfish, it can be any technique). Things like a finned swordfish-kraken can start getting truly monstrous.
Sounds like gussied-up bifurcation to me :)
@@notnotandrew shhhh! It's not bifurcation if you can come up with a cool name for it!
@@killroy42 ,
Hi Derek - I tried your "slot machine" method here, on 1's .. unfortunately it was not able to yield much, but more interestingly the puzzle seemed to defy the rule of "elbow" digits .. Or perhaps I misunderstood Simon's explanation of the rule, that I took to mean "in a slot machine situation, where there are three candidates in box, the elbow/middle digit , can always be eliminated" ... ??
I'm not sure that i understand what you are talking about, but i will like this comment just in case...
I've come across your videos within the last week and can't seem to stop consuming them.
As a novice sudoku player, your ability to rationalize your way through these is just remarkable.
Would you ever consider providing a sudoku video series on how to progressively improve to higher levels?
Many thanks for hours of entertainment! Keep it up
I appreciate that Simon always mentioned his pencilmarking purpose. It reminds me to stick in this method and today I actually spotted the 1s!😌
A long, long time ago, on a Sudoku channel called "Cracking the Cryptic" I learned about a technique called "Slot Machine"... When applied to 1s here, the single 4 is revealed quite quickly. ;-)
When Simon noted all the diagonally offset Snyder pencil marks, my first thought was "I wish I could remember how that slot machine technique worked" 😃
I would be curious at what point in the puzzle, and what candidate "1" cell you started the slot machine from, in order to eliminate the '4'? .. Starting the slot machine, before inserting 'any' candidate cells, since we know R7C7 eventually proved to the '1' .. starting the slot machine from the three candidate 1 cells that point at R7C7 (R4C7, R7C4, R7C5) all produced possible (non-contradictory) results .. Also interesting, this puzzle seemed to contradict Derek Neal's hypothesis concerning the ability to eliminate "elbow" digits in a slot machine (or at least my understanding of it) .. In this puzzle, the only cells I was able to eliminate "1s" from using the slot machine method were R4C1 and R6C9
@@RGS61 This was exactly the same conclusion I came to (don't know the slot machine, but by solving for 1's). It wasn't until Simon said that only one of the inner corners could be a 1 that the 4 clicked and the rest fell into place.
Happy Birthday to Simon's Dad!
And... Great puzzle, Shye!
I got stuck, and had to watch... but I was VERY close to seeing the bent pseudo-triple... just couldn't quite work it out.
But, a year ago I wouldn't have even known where to BEGIN to look... so, I guess I'm learning!
Actually, the bent pseudo-triple was a red herring. You didn't need it to solve the puzzle. It was enough to spot all the rows, columns and boxes where a 1 could only appear in one of two places, and this was enough to eliminate the 1 from the 14 cell that Simon identified. (Coloring the alternate 1's as red/blue pairs made the logic particularly easy to spot. I think this is where the binary fission from the title came in.)
Rules: 02:42
Let's get cracking: 03:02
And how about this video's Simarkisms?!
Stuck: 4x (04:49, 08:41, 16:38, 16:41)
Beautiful: 4x (01:40, 17:57, 23:16, 27:22)
Useless: 3x (09:55, 16:26, 16:29)
Sorry: 3x (06:37, 11:17, 12:17)
Hang On: 3x (15:14, 18:14, 25:28)
The Answer is: 2x (21:13, 23:26)
Nonsense: 2x (18:14, 25:20)
Gorgeous: 2x (02:34, 24:58)
Bother: 1x (12:39)
Clever: 1x (27:01)
Recalcitrant: 1x (25:08)
Incredible: 1x (01:24)
Take a Bow: 1x (27:24)
By sudoku: 1x (21:04)
Approachable: 1x (01:03)
Famous Last Words: 1x (03:18)
FAQ:
Q1: What is a Simarkism?
A1: A Simarkism is something that Simon and Mark typically or frequently say.
Q2: How do you do this so fast?
A2: I'm not made of flesh and blood, but of sand ...
Q3: Why don't you include 'XX' and 'YY'?
A3: Probably it's already on the list ('Scooby-Doo' for example), but not mentioned in this video. But if you think it's not, tell me what you'd like me to include and there's a good chance I'll add it!
Q4: You missed 'XX' at 'YY:ZZ'!
A4: That could very well be the case! Human speech is hard to understand for computers like me, especially British sometimes! Point out the ones that I missed and maybe I'll learn!
Q5: Could you turn these statistics into videos?
A5: I've been playing around with the idea and I'm open to input as to what people would like to see. Let me know if you are interested in this and/or have suggestions.
good bot
Reddit bots on yt? Love it
@@TheMaxymon its a yt bot
No one cares
how to find the trick: look for the first "beautiful" (that's after the intro :P )
"These three cells are a bit sus." - Simon
Better sharpen up your scanning if you think at least one of them vented.
You know your a CtC fan when you recognize the setters favorite tricks and just stare until you figure it out.
Simon abandoned marking 1s at 11:30 too soon! If he continued around, he'd have noticed you get only 2 possible places for 1 in every box. One color for one pattern of ones, one for another, and the 14 in r7c4 is instantly resolved and the puzzle collapses after that into a simple elimination. He thought he was misleading us, but, it was the direct path to the solution.
At that time there was not enough information to get 2 possible places for 1 in every box.
I still don´t understand and hope someone will help me out. Why has there to ´be a 1 in one of those squares of row seven`. Why can´t there be a one in square 4 of row seven, where is the reason for that.
Help, help, help😀
@@onestone9871 you need to look at cell 2 and 8. 1 can only exists in r1c4 and r3c5 for cell 2. and 1 can only exists in r7c5 and r6c9 for cell 8. with this restriction, r7c4 cannot be 1. this is the method this comment uses. not the one Simon use in his solution. Hope this help
@@onestone9871 He explains it quite well in 18:51. You either have a 1 in r3c3, which forces the 1 in r7c5, or you get a bent triple which forces the 1 in r7c7. There's no way to put a 1 in r7c4 without breaking column 5.
A reversed way of seeing it: if r7c4 is a 1, r7c7 is a 9, which due to the "bent triple" forces r3c3 to be a 1. Now you have nowhere to put 1 in column 5.
I love how even before the explanation, you can see Simon's sense out where a bit of logic is hiding itself, before he unearths it for himself. It helps get a handle on what he's working at as he comes up with a way how to gradually extract it from the puzzle in a way that makes sense verbally. Brilliant stuff as always, and wishes of a most pleasant celebration of your dad's annual solar rotation!
So... Who can explain the title? :D
Happy birthday Simon's dad!
I solved it by using an WXYZ-Wing (1478 in B5C5G4H5), eliminating the 1 in A4 and G5, followed by the Y-Wing on 789 in C3C7G3, eliminating 9 in G7. Took about an hour.
However, the way you solved it is more elegant, and gives me yet _another_ nice technique to use. Thanks a lot! :)
What will this technique be called? My suggestion would be 'Bent X-Wing'.
I did it using the WXYZ as well. If you see three in a line like ab, abc and abd then look for WXYZ wings.
Another classic lesson from the wonderful shye, focus mode on :)
What is the trick that almost no one knows?
Watching you, I feel so much more intelligent. All the things you explain, after you explained them, I understand them and think "of course" but would not be able to see them if you were not pointing at them.
Me after pausing Simon at the start then finishing this puzzle and going back to watch the video: "C'mon Simon I'm already done."
Also me: takes over an hour to complete
love shyes puzzles, very excited!
My backtracking (i.e. bifurcating) solver took 17s for this one, the previous Shye ones were around 28s, so this is not so bad
Life lesson from Sudoku: The answer is there! Persist. Trust. Don't give up and you will find it! Thanks for the videos. Love it.
We've seen bent triples, but this is more like a pushed-over X-wing! By which I mean, it's forming a parallelogram instead of a rectangle, as though the top row of an X-wing on ones in r3c5, r3c7, r7c5 and r7c7 had been pushed over to the left by two cells .....
I'll admit it; I'm not great at 'classic' Sudokus at this site. I was able to find a solution (time: 17:37), but only because I bifurcated and got lucky; I missed the trick in the video completely.
Nice puzzle!
Another masterclass from Shye, absolutely incredible! Please Shye make a setting video for this one too, I found the last one absolutely fascinating!
Hi Sam
Does shye have a channel?
@@owo8770 She had an account on TH-cam, no puzzles ((
Happy birthday to Simon’s dad
20:47 solve here, which I am extremely happy with for a shye classic. I've decided that my actual "technique" for any of these classics where there's probably some strange technique is to pencil mark literally the entire grid and then look for cells with not many candidates and how they might interact, because it's usually impossible to spot these things with the usual Snyder notation, etc. I spotted the almost-bent-triple on R3C3 through R7C7 and exactly one them would be a 1. Then added in C5 to get something kinda like an X-wing pointing at R7C4, and that was enough to break it.
yes solved in 20 min with all pencil marks, hidden doubles (46 & 79) and chains but I really like watching the logic here
Exactly how I did it, but I took a few minutes longer.
I am a fan of this system depending on the set up, does it take longer?sometimes. If time isn't a problem, why not solve sudoku this way, sorry about the simple tactic. It is still a good way to train concentration.
Would love to see a setting video for this from shye! I got a bit of an "atom smashing" vibe from it. e.g. a 2 would smash into a 25 pair, solving both. Perhaps that's the fission reference? Loved it! And Happy Birthday to Simon's Dad!
I use dots to mark the possibilities in every square - thus 1 is in the top left corner and two to the right of it and so down to 9 at bottom right - this creates a number pattern in the form of double dots, and triple dots, etc - and the pattern of dots/numbers provides the key - or at worst identifies the way forward 🙏
Figured out an interesting thing on the phistomefel ring is that you can only place 1s in certain places (~16min) because you have to account for 1s in corner squares
I have tried this puzzle about 6 times now with no success yet. Today I gave it to my wife and she solved it in less than 20 min. I watched her and she only used 3 pencil numbers twice the rest were all 2 only. I was shocked. So she did it again in about the same time. No other logic used other than her own common sense.
Birthday wishes to your Dad! Great solve, thank you!
Wake up babe, new sudoku trick dropped
What does she mean she's "really proud of this one"? She should be proud of ALL her Sudokus!!
I always laugh when Simon spot something like a pair and gets one cell from it and then he moves on without looking at the remaining cell that’s also resolved by that pair.
"Oh! Hang on! That's nonsense!"
9 in the corner doesn't get it's own song? but it's 3x what a 3 is.
At 20:47, Simon said "Our pencil marks are doing wonders here" as he completely ignored the pencil marks in the entirety of column 5.
That was a fun puzzle, as soon as I found out that the r3c3 couldn't be a 1, the entire puzzle basically solved itself.
34:21, and now I really want to watch the video to see how Simon solves it, because I did end up bifurcating a couple of times. Each time was a pretty obvious place to bifurcate, because it was clear that a particular binary choice would have a lot of immediate follow-on effects, so I suspect I was essentially on the right path just without a clever way to come to the same conclusion without bifurcation.
(Actually, I think my first bifurcation was just basically doing a Kraken-variant without the fancy name for it, so it might actually have been the right logic....)
16:05 is that an among us reference??😫
cell vented
That's the world's most disappointing three 😂
19:23 to 20:10 what the ever living...Simon just kicked into stockfish mode on sudoku and looked 20 moves ahead. Honestly, I'm a fairly logical guy, but I know my limitations...they're nowhere close to his. Quite honestly having trouble conceptualizing what his limitations even are at this point. There's not a chance in hell I would ever find that trick. He's just on an entirely new level when it comes to Sudoku. I'm 100% convinced he and his partner secretly work for MI:6 as their top think-tank tacticians.
I've been working on a puzzle generator which, of course, includes a solver and a grader. My solver caught the 2-5 and 4-6 hidden pairs. That's it. The grader put it as 5 star (anything the solver can't solve) . The grader *did* tell me there is a solution, and only one solution. But it used a recursive "pick one and try to solve it" method. I love the symmetry of this puzzle!
Me personally solving it, I also caught a locked pair of 1s in column 7 (rows 4 & 7). I'm not sure it helped, I spent way more than 20 minutes on it. Nice one!
Video popped up on my YT home screen … the puzzle immediately looked interesting, so I screen shotted the home screen and cleaned it up in photo editing then dropped into books. (i didn’t want ANY clues) I didn’t even open your video. Using a touch pencil only on an iPad screen it took me 12minutes 38 seconds to solve. I then went to look for your video and struggled to find it because I didn’t open it. When I eventually found it, I wanted to see how you solved it… I found myself frustrated straight away that you didn’t see the pair of 6’s in box 2 as for me the 6’s were the key to the quick solve.
Nobody has half an hour to learn the "new trick" and to search through the video to find it. Try the same video but in 5 minutes, removing all the water. And see views skyrocket.
A while ago you guys had a video of a technique called slot machine which I used to determine that there couldn't be a 1 in the cell. Very useful and I find myself continuing to gravitate towards it when doing puzzles I have a tough time starting out on
Hi Simon ... late entry, but very inspired by your explanations. I've observed, that you often push a number "one off" (one to large or to small), which leads me to suspect, that you are using an alphabetic keyboard. I think a numeric keypad and a little practice would benefit you.
As soon as r7c4 is found to have 1 and 4, there's a bent quadruple in r7c4 r8c5 r3c5 and r2c5 which allows to remove the 1 in r1c4 and thus place a 1 in r3c5, making the 78 89 79 bent triple work. You can do it without resorting to Simon's technique.
Why does Simon not follow up on symmetry situations even when he points them out as potentially useful?
Started casually getting into sudoku lately and tried doing this one before watching the video and couldn't pin down even a single number after like 20mins. Started to watch the video after fumbling for so long and find out it is actual a pretty difficult puzzle. So I don't feel nearly as bad anymore lol
Shye. A genius setter. Wow. Every time, it’s just so ridiculously elegant. Well done. And Simon, wonderful solve, way to spot the trick and to analyze it and break it down so well, wonderful job as always.
The initial number pattern on the grid looks like a cell or nucleus about to divide. Maybe that is why it is called binary fission. It also has some neat patterns in the solve.
I have finished the idea about 1s at the beginning of the solve. It was possible to color all boxes with exactly two possibilties for the 1. This directly removed 1 from r7c4 and forced it to be a 4 without the nearly bent tripple. But of course your solve was much more beautyful.
That is what I did.
I did the same thing. Follow the 1 pencil marks, and you can reduce the 1 down to 2 possibilities in box 8. R7C5, and R9C4. Eliminating it from R7C4
"This 7 has acquired more potency" brilliant 😄
Happy Birthday to Simon's Dad!
Great solve today!
That 1 really was a tough one! (pun intended)
I colored one branch of the possibilites of 1 with one color (green) and the alternative branch with another color (magenta). That meant all other cells got rid of the possibility of 1 (equivalent to pencil marking all 1's)
16:05 These three cells are a bit SUS :0
I can remember when they were sketch.
;^ )
Wonderful classic sudoku, a diabolical and unsolvable puzzle for me (well done shye) but thanks to Simon for finding the path of logic.
Woo... 30 minutes for me... now to watch the video to see this secret technique.
I just coloured in the 6's and realised it would fail if one group was 6... Secret technique I call "nope not that one" :P
Great sudoku, and birthday wishes to your father as well!
I'm new to this but my method is to use dots in each square. 1-top left,2-top middle and so on. It becomes easy the more you do it and i love exploring different ways to solve these. Brilliant puzzle
Needed to use Simon's heavy prompting about the corners around 14 minutes, but was able to spot the naked single 4 in R7C4 thanks to the way the 178 in R3C3 forced 1 into either R7C5 or R7C7 thanks to the almost Y-Wing and spindle. Very entertaining bit of logic, at which point the puzzle collapses very satisfyingly.
First time to solve Shye new technique sodoku. Proud of myself. 😁
I managed to solv it without thinking about any bent imaginary tripples or any other special techniques. Just plain sudoku. It took me 14:19. (And I'm usually very slow compared to Simon and Mark.)
20 minutes before giving up for the first digit. This Classic sudoku is tough!!
I'm too stupid to understand Your strategy. Still solved it. No pencil numbers or any other writing, before I have the solution..
28:25 time, not sure if my pattern would be called bifurcation or not, but used simple logic putting 2 values in the same square to solve.
simon: "I'm in a hurry!"
simon 5secs later: Here let me start from the beginning. the numbers 1,2,3,4,5,6,7,8,9 are what we call " digits ".
I really liked that whole 1 logic. It was fascinating. Thank you Shye and Simon. LOVE Sudoku!
I do not get the 2x 2/3 combination at 9:14. The first one in the middle row of column 7/row 8 I get, but the one in column 8/row 9...that one I cannot follow, because it is a 239 combinatin possible and in column 9/ row 9 (where he did not make a notation at 9:14) could also be a 129...thus the 2 in row 9 is not limited to column 8...thus this 2/3 comination is imho not secured at that point of time, only for the first one in row 8.
I love CTC's solving style and Shye's puzzle so much I made a video on my channel where I
analyze each step of this solving video. In addition to explaining the
strategies used, I add a couple of pause the video moments and some
alternate solving paths, similar to how someone analyzes a chess game.
16:05 sus
Hi Simon, Sorry to say ,I solved this puzzle in 14mins. My method is write any numbers that are obvious then starting at number One ,cross check all the ones ,then twos through nine. when that done I usually start with the squares with the most numbers in them and cross check again one through nine and using [dots] for pencil marks , in empty squares 123 top of square 456 through the middle and 789 for bottom of square. when all squares are filled with dots then cross check again and find what can not go in that square therefore only one number is left that it can be. This may seem as clear as mud to you, but I know what I mean😅. Time was actually 12 mins because I listening to you then drew the grid on a piece of paper
21 minutes no bifurcation. Nice puzzle, it felt pretty straightforward to me.
I don't really get the title so let's see what technique Simon will summon since my solve didn't need anything fancy (well there was a cell with only 14 as possibles in box 8 and 1 was broken, and a couple hidden pairs/triplets but that's it).
Edit : after viewing the video it seems we had the same idea same conclusion different proof and different execution, same result.
How could you prove that "1 was broken" in r7c4?
@@Paolo_De_Leva well from memory on the same row it placed a 9 and then an 8 on column 3.
The 9 made r3c7 a 7.
Possibles for R3C3 were 1,7,8 so now 7 and 8 are both ruled out, only 1 left. This breaks box 2 you can't place 1 anymore.
Or you could prove it like Simon did, it's more elegant but more convoluted as well
Edit: also my solution was just focusing on weak cells just like Simon (which was the most logical next thing to try at that point) and noticing they interacted with each other on the specific case of 1 being placed. The remembering basically a 5-6 long sequence of digits with their placements, again nothing incredible compared to what some guys can do around here and it helps train my memory at the same time!
I can never spot Y wings for the life of me but I can do that and with persistence a little bit of luck/intuition depending on the puzzle I manage to overcome my inabilty haha.
@@pixllo Interesting. Thanks for explaining. Simon's convolute method was certainly smart, fascinating and elegant, but not more than yours.
This was difficult(!) but I eventually proved that r2c1 cannot be 6 when r7c7 is either 1 or 9, and the rest of the solve was easy. Simon, you are incredible!
19-20:12: Discussion of 1s...
I did not understand why R7C4, the box with the 14 center pencil marks, cannot have a 1.
If that is a 1, there is still a way to include a 1 in all 3x3 boxes.
Can someone explain this?? Why does it depend on the bent triple? The way I am seeing it, R7C7 would have to be a 9, then R7C3 would have to be 8 and R3C7 would be 7 and R3C3 would be 1... then all the remaining 1s fall into place and it still works up to that point...
So why is that not possible?? What later move makes it impossible?
20 minutes to place the first digit, and then sweep through the rest of the puzzle in only 7 minutes... Wow! :O
20:00 how you got 4.... I was stuck there...really stuck. btw I checked with a sudoku solver afterwards , it took around 0.000001 sec to solve it :-)
You say someone is sure to comment on your not seeing certain possibilities or patterns. Actually, doesn't your technique of placing one digit at a time in all the boxes if possible, prevent you from eliminating - tidying up - and filling in as you go? For example, you omit to place the 5 in the central box (box 5) very long after the 5s have been placed in boxes 2 and 8, and its placement in box 5 is therefore evident, since the other two places in column 6 have been filled by 1 and 6. Another example also concerns column 6: You eliminate the possibility of 8 in column 6 of box 2 by placing it in column 5. That makes twins of the 7 and 9 left to be placed in column 6 of box 2. But you do not then take the trouble of striking out the 7 from line 6 in box 8, which would have made the 7 in column 5 of that box the only possible 7 in the box. - - Well, maybe I'm too "tidy-minded" here, but it occurs to me that your good technique of finding patterns would stand out even more clearly if you tidied up as you go: whenever you have placed a number, then strike out that number from anywhere in the same line, the same column and the same box.
Regards,
Marianne Skånland
For once i'm not impressed, the trick doesn't quite live up to the title. Much worse than some of the "computer doesn't get it [if we don't allow it]!". The technique is, for a human, a hard to spot rare combination... but with little to go on it's quite basic to find all 2-option cells and ask "what if cell X is this? oh cell Y can't be that no matter what, let's remove that pencil mark and get a digit" (after a number of other less useful questions). First CtC video i can't say i enjoyed - the title just set me up for disappointment. The puzzle is great though, really mindboggling to think of setting this up.
The fun is to NOT PENCIL MARK ANYTHING :)
I have never watched anyone do a sudoku before. I love them and it just popped up in my feed. I thought I would give it a go. It was so frustrating. I kept talking to the screen. Constantly going "you keep missing it"
Very interesting setting. The bent triple wasn't required; the crank shape formed by the 1s was sufficient. If you set R3C3=1, you get a complete set of 1s. If instead you set R7C7=1, you get a different, non-overlapping set. These form two skyscrapers, which can eliminate 1s from R4 in box 4 and R6 in box 6. Crucially, it also rules out 1 from R7C4, making it 4. Following through on this placement, the puzzle quickly unravelled.
I find that 1)finding an easy number then 2) doing the rows,then the verticals, then the boxes is faster than this trying all over the place. You look for the doubles, of course, then eliminate the other numbers. In my opinion, / Use the dots marking too.
I have been using that method for years. Oh by the way. I finish that puzzle long before you did!! I copied it out first and timed myself befores seeing hpow you did it. Took me 10 min 27 secs.
Completed puzzle in about half an hour using none of your fancy 'tricks'.
As long as there are at least 2 couplets is it usually solvable in a more or less straight forward manner. I picked 1 pair of numbers for the first couplet. Went until it came up with a duplicate number in 1 of the rows. That immediately gave me 2 correct numbers to enter. Found no more easy numbers with that choice. Picked a second couplet, entered a pair of numbers. Again came up with no more easy numbers. Again ended up with a duplicate number in 1 of the rows. That gave me 2 more correct numbers. The puzzle finished directly after that entry. No use of swordfishes, tuna fishes, winged animals, or the like. 😀
th-cam.com/video/ynkkMxQPUpk/w-d-xo.htmlm40s
If you continue the logic on 1's, you find 2 positions in each box for a 1.
From there the puzzle collapses.
Oh my L-rd! I'm sitting here *"The 1! The upper left hand corner is a1! ~ The 9! Do that 9! Right there!"* as though it was current; as though he could hear me (similar to how one might yell at a television set during a sporting event lol)
11:27 for me, almost immidiately found the logic after realising that there are no power in the corner pencilmarks.
No you didn’t
So what was 'the trick that almost nobody knows'? I saw normal Sodoku solving. A difficult one, admitted, but I saw no trick
6 must be in box 2 row 2 cuz u have 1,3,6,7,8 in box 1 column 3, box 2 row 2and 3 and column 1and 2. Only one 6 in those 5 spots
Not only was it beautiful watching this come together, with your offset 1s and hypothetical bent triple, but your pure joy and enthusiasm are contagious. I love the respect and awe that you show toward Shye (whoever she is, I'm new to this channel) and the puzzle and its solution. You can just tell you genuinely love what you're doing. And that really speaks to me, as a lover of puzzles myself. The satisfaction I get from solving a tough logic puzzle is so wonderful. And I'm really becoming obsessed with sudoku and learning techniques from you guys. Great channel, great content, and the english accents are the icing on the puzzle cake 😄🧩🎂