For 5 I can see a kind of logic marking them in cages, as this makes a whole cage coloured 3-1, and it makes at least minimal sense. Since 5 still does not have to be either of colours, placing it in specific column doesn’t make as much sense as might seem
5:43 "Let's get cracking" - the solve starts. 56:01 "That's a four" - first digit is placed. 01:11:06 "And that's how to solve it" - the grid is filled. It took approximately 77% of the total solving time to place the very first digit. That's how you know the puzzle is difficult.
i had a completely different solve than simon starting at about 32:00. One deduction i found that simon didn't is that the sum of the digits in a cage or little killer is always a multiple of 3. that's because if the doubled cells sum to x, the negative cells need to sum to 2x to cancel out the doubled value, so in total they sum to 3x. this can be used to say that each caged domino in cols 3 and 4 have to sum to a multiple of 3. we can prove this by noting that the cage entirely in box 1, 2, 4 and 5 have to be a multiple of 3 and every box does too (1-6 sums to 21), which tells us col 3/4 dominoes sum to 3 in these boxes as well. then we can use the columns sum to deduce it for the dominoes in boxes 3 and 4. we know by sudoku that the 5 in box 1 is in col 3, and it has to go with something that sums to a multiple of 3, so a 1 or 4. the top right box has to have a 1 and a 5 (simon shows this a bit later on), so the domino in box 2, in col 4 has to be either a 24 pair or a 36 pair (because they have to sum to a multiple of 3). the 24 pair would make the cage a 1245, with a 4 doubled and everything else negative. this would force a 2 in r1c4, a 4 in r2c4 and a 5 in r2c5 needing an 8 to finish the little killer, so it can't be a 24 pair.. knowing that box 2, col 4 is a 36 pair, we can jump to about 1:04:30 in the video minus the stuff in the bottom rows which is a lot easier to deduce with some digits.
It's a lot easier if you first figure out all the possible combinations of zero cages up front, of which there are only 5 possible combinations, (-26+31, -46+23, -136+5, -125+4,-345+6) then you can see things more clearly as to where positive and negative cells can go based on the connected regions restriction. Using the 0 diagonal through box2 with the 45 restriction in r2c5 you can figure out it has to be 4 and not 5 based on all the other known constraints on the zero-sum boxes in the rest of the puzzle pretty quickly, not sure why Simon is so afraid of pencil marking things more to see it had to be a 4 with a 62 on the diagonal!
Yes, and you need to write down that meta logic in a *separate aide-memoire.* This can be easily done both on a PC and on a smartphone, as I explained in a separate comment.
The fear of the computer breaking added an extra dimension!! However I watch these videos to chill out, so I’d be up for crowd sourcing a better computer for Simon 😂
Rules: 03:22 Let's Get Cracking: 05:44 Simon's time: 1h5m37s Puzzle Solved: 1:11:21 What about this video's Top Tier Simarkisms?! Bobbins: 2x (36:14, 58:55) Three In the Corner: 2x (1:08:58) And how about this video's Simarkisms?! Ah: 15x (17:11, 21:47, 22:30, 23:04, 25:43, 34:44, 38:32, 55:21, 55:21, 57:57, 57:57, 1:02:51, 1:03:14, 1:03:23, 1:03:23, 1:08:18) Hang On: 10x (10:54, 11:40, 37:56, 40:35, 54:45, 57:57, 1:03:14) Sorry: 8x (15:37, 16:19, 36:36, 40:38, 46:12, 52:47, 59:50, 1:09:51) Checkerboard: 8x (06:42, 06:51, 07:00, 07:29, 45:36, 1:07:24, 1:07:29, 1:09:58) Obviously: 7x (02:30, 03:01, 17:38, 22:06, 24:47, 38:41, 1:06:01) Brilliant: 6x (31:51, 31:53, 55:54, 55:56, 1:11:18, 1:11:51) By Sudoku: 6x (36:48, 57:21, 1:04:34, 1:07:34, 1:07:53, 1:08:49) Nature: 5x (02:20, 06:04, 20:02, 20:48, 27:47) Stuck: 3x (1:02:30, 1:02:32, 1:05:47) Wow: 3x (44:29, 46:00, 47:59) Pencil Mark/mark: 3x (19:49, 58:02, 1:01:39) Weird: 3x (41:11, 49:42, 1:06:18) What on Earth: 2x (15:52, 46:08) Clever: 2x (01:19, 50:27) Come on Simon: 2x (1:02:35, 1:04:56) Think Harder: 2x (36:40, 40:43) In Fact: 2x (57:49, 1:05:14) What Does This Mean?: 2x (15:25, 1:04:56) Good Grief: 1x (05:34) Goodness: 1x (59:37) Bother: 1x (1:04:00) In the Spotlight: 1x (1:09:00) Lovely: 1x (02:07) First Digit: 1x (56:08) Astonishing: 1x (07:25) Going Mad: 1x (1:07:44) Take a Bow: 1x (1:12:03) Bonkers: 1x (05:36) Shouting: 1x (1:02:01) Famous Last Words: 1x (47:13) Surely: 1x (1:08:13) Phone is Buzzing: 1x (56:48) Most popular number(>9), digit and colour this video: Ten (12 mentions) Two (113 mentions) Blue (63 mentions) Antithesis Battles: Even (9) - Odd (0) Black (2) - White (0) Column (6) - Row (4) 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!
Am I the only person who even after all these years still have slight heart attacks when simon does normal sudoku solving at the end of the video and first writes in the wrong digit in before he corrects it one millisecond later?
The computer noise is probably a fan. Clean your computer of dust, and make sure a wire isn't going into one of your fans. Could be that a fan needs to be replaced.
@@FrankGevaerts and if the fan isn't catching on anything obvious, it could be a worn out bearing. Fans are easy to replace. I'm a fan of noctua. But probably any respectable brand would be fine.
Fascinatingly challenging. Brilliant meta-logic and brilliant solve by Simon (with crucial step @54:56). 👏👏👏👏👏👏👏 I would have stated the main rule as follows: _"...Shade one of these regions. Shaded cells are both _*_doublers_*_ and _*_negators._*_ Digits in shaded cells count as the negative of their doubled value..."_ _"For instance a two-cell cage that adds up to zero could be fulfilled by a _*_shaded 1_*_ (which counts as -2) and an _*_unshaded 2_*_ (which is not modified)"_
This is an amazing puzzle. I'm absolutely guffawed by this one. Arctan did an amazing job. I managed to solve it in 40 minutes, but I completely understand how Simon felt through his hour of solving... I felt the same.
If you listen carefully, you can hear the words that Simon's computer is trying to tell him: "pay attention to the box borders down the center of the puzzle!" Nearly every time he made a deduction about what went in those central zero cages, he could have further restricted them to one box or the other but overlooked it.
I have to say, this solve was one of Simon’s best. The way he used the logic with the 5s in cages to deduce that a string of the perimeter was forced was really clever. He also found the key deduction a lot quicker than most people would have done (it was a pretty brutal step as it was so easy to miss). Ok, it did all come at the cost of some sudoku but it was absolutely worth it. As for my own solve, I started with the perimeter, then focused on 5s and 6s in cages to work out all the combinations given that for every 3 cages in 2 rows, columns or boxes, one had to contain 2 and 5, another 2 and 6 and the last 5 and 6. That logic expanded to ‘cage A is 1245, cage B has 2 of each type and cage C doubles 5 or 6’, which extended the shading and led to the key deduction Simon found (a 1245 cage can never contain a negative 4 or 6, since the 4 is doubled). After that, the yin-yang and long diagonal finished the puzzle. Took me a while but I was pleased to get there in the end. :)
It was extremely brilliant, as usual. Not more than usual, because Simon does so many extraordinary solves that you can almost say usual = extraordinary for him. I agree that the key deduction @54:56 was masterfully performed, with minimal amount of bifurcation and much much faster than I did.
It's amazing how much time goes between "you can't have three doublers in a cage" and the realization of not being able to change color on the border between the corners.
arctan here! very surprised to see the puzzle, even more surprised to see a (very long) comment disappear into youtube, but will try to repeat / remember what it was! first and foremost, i'll be honest: i don't remember what my exact solve path was here, other than a certain digit being very useful in figuring out cages, coloring, etc. etc. a decent number of realizations to come from the rules, especially as in a 6x6 (there's a reason i haven't done a 9x9 with these rules yet), and tbh simon was frighteningly fast on some of these. and, overall, it was a good solve, and about where i might've guessed the time before solving. most impressive, to me, was how quickly everything came together at the end; to me, putting all those deductions together and getting it to resolve that fast shows a pretty good understanding of the idea overall, even if some of the parts were a little slipperier in places than others.
more specifically / spoilerifically, the idea i had here (which i got while running, and i wish all my runs were this productive) was that (spoilers following, stop reading if you don't wanna know) a five can go in a cage if and only if (and the bidirectional is very important here) that cage is three negatives and one doubler; this, plus the two cell diagonal, plus the general cage layout, plus minimal sudoku, gives a lot of deductions that help kickstart actually placing digits, etc.l
40 minutes into the solve, no digits placed, a load of ham pencilmarks but nothing really useful, and some colouring: "I don't think this is very easy actually". You don't say! I can't even follow most of what you're doing, let alone contemplate attempting it myself, it's absolutely monstrous.
Yes, Simon should have used a separate *aide-memoire,* as I explained in a separate comment. Unless you solve the puzzle before watching, I guess it is difficult to read his mind in some parts of the video.
_"So now... 😕 see I cannot remember the combinations that we were looking at"_ (Simon @38:52) That's why you (and more importantly your viewers) need a separate *aide-memoire,* as I explained below. It does not really matter for you, because in a few seconds you can figure them out again in your mind, but most of your viewers cannot and they cannot read your mind❗
39:26 for my time (splitted over two days, so who knows what my brain was doing during my sleep!). I guess this is as hard as a 6x6 can get. I first noticed that the sum of the digits in a cage must be a multiple of 3, so the numbers left out must also sum to a multiple of 3, that leaves only 5 possible combinations (2 with pairs, none containing a 5, 3 with 3 negatives and 1 double positive, all containing a 5). From there, it was not so hard to figure out the overall shape of the border. I then studied the possibilities for the arrow in the top right corner. The rest was relatively easy afterwards. What a puzzle anyway!
Bear in mind: onl combinations possible in a cage. After 22'00 Deduct a 5 in c3 - r1 or r2. Therefore this 5 is doubled, and since there's no combination with 2 it's the single doubler in that cage. Therefore : 5-136. Now cage #3 = 4125....etc.
Simon, consider doing more Sudoku in Sudoku puzzles as a New Year's resoution. You know, in the sense you don't make it far into the year with these...
Two things that maybe can help: There are only six combinations possible for the cages, and noting them all at the start I think makes some of the logic Simon uses a bit easier to see. Also considering the sets where you have three adjacent cages in rows or columns means that the digits must be divided into sums of 14 in hot and 28 in cold. This helps to deduce that some of the cages must contain the same digits.
25:15+~44 (my timer reset when I plugged my phone in) = ~69:15. I broke it twice in the first 44 minutes, ended up looking at the video to see if I was TOTALLY off track, saw that I (incorrectly) "proved" that r1c3 was a negative. I worked out that every cage with a 5 in it had only one positive doubler cell, then proceeded to act as if ALL cages had one doubler cell and screwed up my marking because of that.
I was on the edge of my seat wondering if all this footage was going to be lost. In all seriousness, it sounds like you need to blow the dust out of your fans, Simon.
All the people commenting on Simon’s lack of sudoku with the 5’s, but what’s weird is that he did some sudoku with 5’s along the way but somehow missed it on other cases.
I think the cages being laid out the way they were made Simon forget that the normal 6x6 sudoku boxes existed unfortunately. One thing I saw which would have made things slightly easier is that for rows 1 and 2, rows 5 and 6, and columns 3 and 4, to get an overall total of 0, you need to have a total of 28 in blue and 14 in orange (in terms of digits, not modified values).
Might be the most frustrating watch I've ever had with Simon. He just seemed to totally forget the existence of the 3x2 boxes for the entire first hour.
I might have gotten lucky by looking here early on- the 2nd and 3rd cages along the top needed to share exactly 2 digits. Therefore one must be double 4, as 13(5)6 and 345(6) share 3 digits. If the top right cage was double 5 with 136, the killer going through it would need a 46 pair, forcing the negative 4 into r1c4, meaning that the 2nd and 3rd top cages couldn’t contain the required double 4
Since CTC always emphasizes that bifurcation is not an honorable technique - not to say valid - for solving a Sudoku, but every conclusion is ultimately the result of a falsified assumption, I have a question here: at what length of an argument chain does bifurcation begin?
I love these videos because i am fighting for my life trying to follow the logic you are casually explaining, on a puzzle i couldn't break into with a hammer, and i still get to feel Very Extremely Smart because i noticed that the 5 doesn't go there.😂😂😂
When I loaded this one up I thought it was going to be hard as Simon's video was 70+mins long. Having watched it I was screaming at the screen, look at the 5s and 3-6s. Took me 20mins, never have I completed one so much faster than Simon.
1:02:15 'You're all shouting at me, aren't you?" To be honest, I already stopped shouting at this point in the video :) Poor Simon making things so hard on himself by forgetting/ignoring normal sudoku rules...
1:01:25 - I hope it is the cooler system, next thing that comes to mind is the hard drive scratching... Even tough I'm not sure modern hard drives would have this problem very often, it is probably just a missaligned cooler or some dust making it off balance.
The noise sounds like one of your fans in the computer is loose. If that's the case, than there's not too much to worry about because it will still function, but you should eventually change them. But of course I can't be certain via a youtube video sound.
If you are using OBS, you should set the recording format to MKV. That way all the footage will be saved if a power cut happens. However, you have to do one extra step and that's to remux after you're done with the recording so that you get access to editing and uploading.
Could it be deducted that all 2x2 cages with 5s is 1 orange and 3 blue while all without are 2 orange 2 blue and then box 4 columns 1 and 2 are free play since it has no cage or arrow covering it, making gray orange to connect.
I could be mistaken, but I think it's possible to solve the puzzle (along the lines of Simon's logic) without using the long diagonal from r1c2 to r5c6. The rest of the constraints seem to suffice to determine all the digits at the end.
Really starting to get worried about Simon or his computer as this is yet another backup video! 🤔 Oh Simon, this was sooo painful watching you refuse to do sudoku in this sudoku puzzle to make pencil mark eliminations! Has Finkz found her way inside your computer??? 😲
you should really fix your microphone. you seam to have a high end microphone. you should not have that much background noise. you can filter that out.
Simon clearly cursed himself in the rules intro, when he said that maybe not everyone knows what normal 6x6 sudoku is!! (Also, thanks for the poem Simon, that was a good one.)
Actually this is the first CtC video in a long time that I found a bit boring, due to the frustrating shouting about doing sudoku... And yet I kept watching, desiring to know how everything would be sorted out by Simon eventually!
Am I the only one who noticed that it would have been much easier if you would calculate that the top two rows, bottom two rows, and middle two columns must include a sum of 14 on the positive numbers and 28 on the negatives? Was being driven mad by it being ignored throughout (oh, and box constraints, of course)
For once I was able to solve this puzzle faster than Simon using a very secret trick I tell only to my favorite people. Since you are still reading this comment, you are definitely one of my favorite people. The trick is using Sudoku in a Sudoku!
*SIMON WILL NEVER TEACH THIS TO YOU* He prefers not to use it. I believe you may need a separate *aide-memoire* in this case. For instance, if you use a PC, you can use a second grid on a separate window. On a smartphone, you can open one instance of sudokupad on *TH-cam,* and the other on your favourite browser. Then you press the *|||* button twice to quickly switch back and forth. The meta logic needed to break-in implies that a cage can only have two shading configurations. Either: *1 doubler 3 negators* 4 1-2-5 5 1-3-6 6 3-4-5 or *2 doublers 2 negators* 1-3 2-6 2-3 4-6 The first configuration always needs a *5.* The second one never includes a *5* and always includes *2, 3,* and *6.* I used my aide-memoire to write down these configurations.
Never been so early to a video, and a video was never as perfectly on time as this one. Im tired and should be studying for en exam but now im just going to relax and watch a sudoku :)
I'm convinced that Simon could have solved this in half the time if he hadn't used so many pencil marks, especially incorrect ones like 5 possibly being in c4 r1 and r2.
Argh! Simon. The 0 cage spawning from r1c1 does not have a five in. Therefore the 5 in box 1 is located r1c3 or r2c3. Which takes care of the 5 in the third column. Because the 0-cages in the top-right and bottom rights have fives in them, they make an x-wing and place the 5 in box 4 in r3c4 or r4c4. Are we not doing sudoku? Edit: wow. Again. At 56:00 in, Simon can just write down 36 in r1c4 and r2c4. Does he not see the boxes in the 6-sudoku grid?
Variations on a song: 'That's six in the corner' or 'O Christmas negative-threes...', although this is, I am sad to say, another puzzle from the reserves. Simon, at least let us know how you're faring!!
The written rules don't specify, but as you said in this video, it has to be the digits 1-6, and you do need to change that. I recently did one of your videos that went 0-8, so that's not a given. 44:23 for me, but I looked at it for about 12 minutes before that, then came to the video to check the rules, then restarted after that. This puzzle was VERY fun, but it does need the rules cleared up.
The break in I used: 1. Because of the 2 cell diagonal at the top right, the grid contains one color change on the perimeter. 2. Due to the rules of yin-yang sudoku, there can only ever be zero or two color changes on the perimeter (change once, then back). 3. Because it's mathematically impossible to use three positive doubled cells in a cage to equal one negative digit, every cage must have a minimum of two negative cells. 4. Due to the rules of regular sudoku, 6 must be on every side of the grid. 5. 6 can never be doubled alongside a second digit in the same box, because no two negatives could ever equal it. 6. 6s that are on the perimeter and also in boxes must therefore be negative. 7. The top and bottom sides of the box must contain a negative 6. 8. Because of the shortest diagonal, we know where one of the two color changes are. 9. In order for two opposing sides to contain a negative, every corner between them must contain a negative. 10. The bottom and rightmost sides must be entirely negative. Then I started on the logic of 5s that Simon used. But there were several other points where I was using different logic to his.
@@RichSmith77 that doesn't change that it's still useful to actually state, as Simon himself said. Also, you made the error of arguing against an example and thinking that disproves the overall point.
@@wanderlustwarrior I was pointing out that the example you gave didn't prove your point. You gave an example that wasn't normal. There's a difference between saying it would be nice if the rules clarified something, and saying "you need to change that".
I hope Simon doesn't use a laptop. In a regular computer, you just open the case and clean the fans. Or if you have a case with a dust filter, just clean the filter. If it's a laptop I thought you could use some air blowers to help clear some dust from the fans.
NORMAL SUDOKU RULES APPLY 😂 I kind of feel like Caps-Lock is appropriate here 😅 How did he even solve it without basically using the actual boxes of the grid?
Obviously an old back-up recording done by Simon for use during his absence. However, I would imagine that if Simon watched his own video I think he would feel very annoyed at himself. Considering I truly believe that his solving is generally borderline genius doing so whilst being hugely entertaining I do not intend to be cruel by my comment. Come back soon Simon.
Kudos to Simon. He managed to solve the sudoku while forcefully rejecting doing sudoku at every opportunity.
I think we got a new record, it took 1 hour, 3 minutes and 22 seconds until Simon finally decided to do sudoku in a sudoku puzzle lol
Lol
Missing the forest for the trees. Simon was so focused on cages, he ignored boxes.
Yeah, i just wondered why he put 5 in all 4 position in boxes in the middle when they can only be either on left or right sides of middle line.
I thought it was just the 5's for so long then box2 with 3/6.... 😢😢😢
For 5 I can see a kind of logic marking them in cages, as this makes a whole cage coloured 3-1, and it makes at least minimal sense. Since 5 still does not have to be either of colours, placing it in specific column doesn’t make as much sense as might seem
I've not shouted at the screen as much for weeks! I don't know how people fall asleep to these. They must not watch the video.
Yes, and sudoku!
"You're all shouting at me because you know it's four", we've been shouting the whole time about 5s instead, 😂
Simon always amazes me how much of a puzzle he can solve without using Sudoku logic. He went a whole hour before doing it in this one.
but he disnt have a digit until after an hour
1:05:40 "So Sudoku is more friendly than we've understood." this had me crying with laughter 😂
This puzzle tricked simon by disguising as a 9x9 grid with nine 2x2 regions.
5:43 "Let's get cracking" - the solve starts.
56:01 "That's a four" - first digit is placed.
01:11:06 "And that's how to solve it" - the grid is filled.
It took approximately 77% of the total solving time to place the very first digit. That's how you know the puzzle is difficult.
Add a time for the first time sudoku is used... 😂 Sudoku is your friend, Simon!!
OMG, how is Simon not correcting the placing of the 5s for the whole video!!
i had a completely different solve than simon starting at about 32:00. One deduction i found that simon didn't is that the sum of the digits in a cage or little killer is always a multiple of 3. that's because if the doubled cells sum to x, the negative cells need to sum to 2x to cancel out the doubled value, so in total they sum to 3x. this can be used to say that each caged domino in cols 3 and 4 have to sum to a multiple of 3. we can prove this by noting that the cage entirely in box 1, 2, 4 and 5 have to be a multiple of 3 and every box does too (1-6 sums to 21), which tells us col 3/4 dominoes sum to 3 in these boxes as well. then we can use the columns sum to deduce it for the dominoes in boxes 3 and 4.
we know by sudoku that the 5 in box 1 is in col 3, and it has to go with something that sums to a multiple of 3, so a 1 or 4. the top right box has to have a 1 and a 5 (simon shows this a bit later on), so the domino in box 2, in col 4 has to be either a 24 pair or a 36 pair (because they have to sum to a multiple of 3). the 24 pair would make the cage a 1245, with a 4 doubled and everything else negative. this would force a 2 in r1c4, a 4 in r2c4 and a 5 in r2c5 needing an 8 to finish the little killer, so it can't be a 24 pair.. knowing that box 2, col 4 is a 36 pair, we can jump to about 1:04:30 in the video minus the stuff in the bottom rows which is a lot easier to deduce with some digits.
I could listen to Simon read poems for hours. Brilliant looking puzzle.
It's a lot easier if you first figure out all the possible combinations of zero cages up front, of which there are only 5 possible combinations, (-26+31, -46+23, -136+5, -125+4,-345+6) then you can see things more clearly as to where positive and negative cells can go based on the connected regions restriction. Using the 0 diagonal through box2 with the 45 restriction in r2c5 you can figure out it has to be 4 and not 5 based on all the other known constraints on the zero-sum boxes in the rest of the puzzle pretty quickly, not sure why Simon is so afraid of pencil marking things more to see it had to be a 4 with a 62 on the diagonal!
Yes, and you need to write down that meta logic in a *separate aide-memoire.* This can be easily done both on a PC and on a smartphone, as I explained in a separate comment.
The fear of the computer breaking added an extra dimension!! However I watch these videos to chill out, so I’d be up for crowd sourcing a better computer for Simon 😂
Rules: 03:22
Let's Get Cracking: 05:44
Simon's time: 1h5m37s
Puzzle Solved: 1:11:21
What about this video's Top Tier Simarkisms?!
Bobbins: 2x (36:14, 58:55)
Three In the Corner: 2x (1:08:58)
And how about this video's Simarkisms?!
Ah: 15x (17:11, 21:47, 22:30, 23:04, 25:43, 34:44, 38:32, 55:21, 55:21, 57:57, 57:57, 1:02:51, 1:03:14, 1:03:23, 1:03:23, 1:08:18)
Hang On: 10x (10:54, 11:40, 37:56, 40:35, 54:45, 57:57, 1:03:14)
Sorry: 8x (15:37, 16:19, 36:36, 40:38, 46:12, 52:47, 59:50, 1:09:51)
Checkerboard: 8x (06:42, 06:51, 07:00, 07:29, 45:36, 1:07:24, 1:07:29, 1:09:58)
Obviously: 7x (02:30, 03:01, 17:38, 22:06, 24:47, 38:41, 1:06:01)
Brilliant: 6x (31:51, 31:53, 55:54, 55:56, 1:11:18, 1:11:51)
By Sudoku: 6x (36:48, 57:21, 1:04:34, 1:07:34, 1:07:53, 1:08:49)
Nature: 5x (02:20, 06:04, 20:02, 20:48, 27:47)
Stuck: 3x (1:02:30, 1:02:32, 1:05:47)
Wow: 3x (44:29, 46:00, 47:59)
Pencil Mark/mark: 3x (19:49, 58:02, 1:01:39)
Weird: 3x (41:11, 49:42, 1:06:18)
What on Earth: 2x (15:52, 46:08)
Clever: 2x (01:19, 50:27)
Come on Simon: 2x (1:02:35, 1:04:56)
Think Harder: 2x (36:40, 40:43)
In Fact: 2x (57:49, 1:05:14)
What Does This Mean?: 2x (15:25, 1:04:56)
Good Grief: 1x (05:34)
Goodness: 1x (59:37)
Bother: 1x (1:04:00)
In the Spotlight: 1x (1:09:00)
Lovely: 1x (02:07)
First Digit: 1x (56:08)
Astonishing: 1x (07:25)
Going Mad: 1x (1:07:44)
Take a Bow: 1x (1:12:03)
Bonkers: 1x (05:36)
Shouting: 1x (1:02:01)
Famous Last Words: 1x (47:13)
Surely: 1x (1:08:13)
Phone is Buzzing: 1x (56:48)
Most popular number(>9), digit and colour this video:
Ten (12 mentions)
Two (113 mentions)
Blue (63 mentions)
Antithesis Battles:
Even (9) - Odd (0)
Black (2) - White (0)
Column (6) - Row (4)
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!
this is brilliant
@@Wilkins23-6 I read that in Simon's voice "This is absolutely brilliant!"
Rarely has a puzzle summary seemed so apt. That absolutely was bonkers and brilliant in equal measure! Extraordinary piece of setting!
What other maths-TH-cam nerds wished the orange was brown every time Simon said "3 blue, 1 orange"
That's down to color-blindness issues...
Brilliant
Brown **is** dark orange.
Brown is available to use...
@@SVNBob TechnologyConnections reference. haha
The confusion between cages and boxes. lol :)
Simon's refusal to do Sudoku is truly impressive today
Am I the only person who even after all these years still have slight heart attacks when simon does normal sudoku solving at the end of the video and first writes in the wrong digit in before he corrects it one millisecond later?
He's typing without looking at the keyboard
I've noticed hints Simon might be dyspraxic
Simon starts doing Sudoku in a Sudoku puzzle, and it gets solved... heh heh.
The computer noise is probably a fan. Clean your computer of dust, and make sure a wire isn't going into one of your fans. Could be that a fan needs to be replaced.
Yes, it's a bit tricky to hear, but now you mention it that did sound like a fan hitting a wire. If so, if nothing is damaged, easy to fix
It also sounds like there'd be a DVD in the disk reader and it was rubbing against something
@@FrankGevaerts and if the fan isn't catching on anything obvious, it could be a worn out bearing. Fans are easy to replace. I'm a fan of noctua. But probably any respectable brand would be fine.
definitely sounds like something that is spinning is grinding against something. So either a fan or worse a hard drive disc.
I have 0 clues how to start?
Correct. Ten of them.
Fascinatingly challenging. Brilliant meta-logic and brilliant solve by Simon (with crucial step @54:56). 👏👏👏👏👏👏👏
I would have stated the main rule as follows:
_"...Shade one of these regions. Shaded cells are both _*_doublers_*_ and _*_negators._*_ Digits in shaded cells count as the negative of their doubled value..."_
_"For instance a two-cell cage that adds up to zero could be fulfilled by a _*_shaded 1_*_ (which counts as -2) and an _*_unshaded 2_*_ (which is not modified)"_
This is an amazing puzzle. I'm absolutely guffawed by this one. Arctan did an amazing job. I managed to solve it in 40 minutes, but I completely understand how Simon felt through his hour of solving... I felt the same.
Your 5 belongs to box 1 in the second cage!
If you listen carefully, you can hear the words that Simon's computer is trying to tell him: "pay attention to the box borders down the center of the puzzle!" Nearly every time he made a deduction about what went in those central zero cages, he could have further restricted them to one box or the other but overlooked it.
i saw him missing this and was going mad
@@TheTastefirst lol
I have to say, this solve was one of Simon’s best. The way he used the logic with the 5s in cages to deduce that a string of the perimeter was forced was really clever. He also found the key deduction a lot quicker than most people would have done (it was a pretty brutal step as it was so easy to miss). Ok, it did all come at the cost of some sudoku but it was absolutely worth it. As for my own solve, I started with the perimeter, then focused on 5s and 6s in cages to work out all the combinations given that for every 3 cages in 2 rows, columns or boxes, one had to contain 2 and 5, another 2 and 6 and the last 5 and 6. That logic expanded to ‘cage A is 1245, cage B has 2 of each type and cage C doubles 5 or 6’, which extended the shading and led to the key deduction Simon found (a 1245 cage can never contain a negative 4 or 6, since the 4 is doubled). After that, the yin-yang and long diagonal finished the puzzle. Took me a while but I was pleased to get there in the end. :)
It was extremely brilliant, as usual. Not more than usual, because Simon does so many extraordinary solves that you can almost say usual = extraordinary for him.
I agree that the key deduction @54:56 was masterfully performed, with minimal amount of bifurcation and much much faster than I did.
It's amazing how much time goes between "you can't have three doublers in a cage" and the realization of not being able to change color on the border between the corners.
Simon: "this is a 6 by 6 sudoku"
Simon a couple minutes later: "the 3 boxes in r1 and r2"
arctan here! very surprised to see the puzzle, even more surprised to see a (very long) comment disappear into youtube, but will try to repeat / remember what it was!
first and foremost, i'll be honest: i don't remember what my exact solve path was here, other than a certain digit being very useful in figuring out cages, coloring, etc. etc. a decent number of realizations to come from the rules, especially as in a 6x6 (there's a reason i haven't done a 9x9 with these rules yet), and tbh simon was frighteningly fast on some of these. and, overall, it was a good solve, and about where i might've guessed the time before solving. most impressive, to me, was how quickly everything came together at the end; to me, putting all those deductions together and getting it to resolve that fast shows a pretty good understanding of the idea overall, even if some of the parts were a little slipperier in places than others.
more specifically / spoilerifically, the idea i had here (which i got while running, and i wish all my runs were this productive) was that (spoilers following, stop reading if you don't wanna know) a five can go in a cage if and only if (and the bidirectional is very important here) that cage is three negatives and one doubler; this, plus the two cell diagonal, plus the general cage layout, plus minimal sudoku, gives a lot of deductions that help kickstart actually placing digits, etc.l
Unfortunately, TH-cam very umpolitely deletes comments without warning. It does not even accept links to other TH-cam videos 🤬
Looks like one of the trickiest 6x6's I've seen
40 minutes into the solve, no digits placed, a load of ham pencilmarks but nothing really useful, and some colouring: "I don't think this is very easy actually".
You don't say! I can't even follow most of what you're doing, let alone contemplate attempting it myself, it's absolutely monstrous.
Yes, Simon should have used a separate *aide-memoire,* as I explained in a separate comment.
Unless you solve the puzzle before watching, I guess it is difficult to read his mind in some parts of the video.
_"So now... 😕 see I cannot remember the combinations that we were looking at"_ (Simon @38:52)
That's why you (and more importantly your viewers) need a separate *aide-memoire,* as I explained below.
It does not really matter for you, because in a few seconds you can figure them out again in your mind, but most of your viewers cannot and they cannot read your mind❗
39:26 for my time (splitted over two days, so who knows what my brain was doing during my sleep!). I guess this is as hard as a 6x6 can get.
I first noticed that the sum of the digits in a cage must be a multiple of 3, so the numbers left out must also sum to a multiple of 3, that leaves only 5 possible combinations (2 with pairs, none containing a 5, 3 with 3 negatives and 1 double positive, all containing a 5). From there, it was not so hard to figure out the overall shape of the border. I then studied the possibilities for the arrow in the top right corner. The rest was relatively easy afterwards. What a puzzle anyway!
Bear in mind: onl combinations possible in a cage.
After 22'00
Deduct a 5 in c3 - r1 or r2.
Therefore this 5 is doubled, and since there's no combination with 2 it's the single doubler in that cage.
Therefore : 5-136.
Now cage #3 = 4125....etc.
Simon, consider doing more Sudoku in Sudoku puzzles as a New Year's resoution. You know, in the sense you don't make it far into the year with these...
Touched by you reading of Frosts poem to us Simon! Thank you for sharing it!! What a brutal 6 x 6 ! Outstanding from you Arctan!!
@36:06 "There was never a 5 in R1C4", I scream again silently.
Two things that maybe can help: There are only six combinations possible for the cages, and noting them all at the start I think makes some of the logic Simon uses a bit easier to see. Also considering the sets where you have three adjacent cages in rows or columns means that the digits must be divided into sums of 14 in hot and 28 in cold. This helps to deduce that some of the cages must contain the same digits.
Only *five* combinations, as I explained in my comment about the *aide-memoire.*
25:15+~44 (my timer reset when I plugged my phone in) = ~69:15. I broke it twice in the first 44 minutes, ended up looking at the video to see if I was TOTALLY off track, saw that I (incorrectly) "proved" that r1c3 was a negative. I worked out that every cage with a 5 in it had only one positive doubler cell, then proceeded to act as if ALL cages had one doubler cell and screwed up my marking because of that.
Again determination saves the day. Well played Simon.
I was on the edge of my seat wondering if all this footage was going to be lost.
In all seriousness, it sounds like you need to blow the dust out of your fans, Simon.
Agree it sounds like the fan bearings, let's hope it just dust/hair
All the people commenting on Simon’s lack of sudoku with the 5’s, but what’s weird is that he did some sudoku with 5’s along the way but somehow missed it on other cases.
I think the cages being laid out the way they were made Simon forget that the normal 6x6 sudoku boxes existed unfortunately. One thing I saw which would have made things slightly easier is that for rows 1 and 2, rows 5 and 6, and columns 3 and 4, to get an overall total of 0, you need to have a total of 28 in blue and 14 in orange (in terms of digits, not modified values).
Get well soon, Simon.
Might be the most frustrating watch I've ever had with Simon. He just seemed to totally forget the existence of the 3x2 boxes for the entire first hour.
It took Simon a long time to realize that the 5 in the second cage has to go in column 3.
I might have gotten lucky by looking here early on- the 2nd and 3rd cages along the top needed to share exactly 2 digits. Therefore one must be double 4, as 13(5)6 and 345(6) share 3 digits.
If the top right cage was double 5 with 136, the killer going through it would need a 46 pair, forcing the negative 4 into r1c4, meaning that the 2nd and 3rd top cages couldn’t contain the required double 4
My TH-cam glitched and didn't display the time properly, and so I thought an "April Fools" puzzle was only 1 minute long
Just finished Rat Run 19 and my goodness I can't wait for Friday to watch Simon solve it, might be the best yet
With all the pre-recorded video's this week, we probably won't get to see Finkz this Friday...
@@stangerrits6712 sadly true :(
@ Yesterday we had a fresh video it seems, so let’s hope for the best today!
☯ Simon's Yin-yang pattern is more satisfying in a 6×6 grid than a 9×9, because it is perfectly balanced between the two colours.
As all things should be.
@20:00 has Simon forgotten the 6 sudoku boxes?
He treats the cages as boxes instead 😢
Since CTC always emphasizes that bifurcation is not an honorable technique - not to say valid - for solving a Sudoku, but every conclusion is ultimately the result of a falsified assumption, I have a question here: at what length of an argument chain does bifurcation begin?
I love these videos because i am fighting for my life trying to follow the logic you are casually explaining, on a puzzle i couldn't break into with a hammer, and i still get to feel Very Extremely Smart because i noticed that the 5 doesn't go there.😂😂😂
When I loaded this one up I thought it was going to be hard as Simon's video was 70+mins long. Having watched it I was screaming at the screen, look at the 5s and 3-6s. Took me 20mins, never have I completed one so much faster than Simon.
1:02:15 'You're all shouting at me, aren't you?" To be honest, I already stopped shouting at this point in the video :) Poor Simon making things so hard on himself by forgetting/ignoring normal sudoku rules...
The pencil marked 5s were really annoying me. Simon knew exactly which column they went in boxes 1 and 4!
1:01:25 - I hope it is the cooler system, next thing that comes to mind is the hard drive scratching...
Even tough I'm not sure modern hard drives would have this problem very often, it is probably just a missaligned cooler or some dust making it off balance.
28:04 I'm sad you aren't going grey negative and red doubler, and just leave your orange/blue marking up there.
The lack of box logic in your pencil marking was kinda driving me crazy😅. Wonderful video as always!
Relief at 1:03:21
A dust of snow brings back memories >:)
The noise sounds like one of your fans in the computer is loose. If that's the case, than there's not too much to worry about because it will still function, but you should eventually change them. But of course I can't be certain via a youtube video sound.
If you are using OBS, you should set the recording format to MKV. That way all the footage will be saved if a power cut happens. However, you have to do one extra step and that's to remux after you're done with the recording so that you get access to editing and uploading.
Could it be deducted that all 2x2 cages with 5s is 1 orange and 3 blue while all without are 2 orange 2 blue and then box 4 columns 1 and 2 are free play since it has no cage or arrow covering it, making gray orange to connect.
I could be mistaken, but I think it's possible to solve the puzzle (along the lines of Simon's logic) without using the long diagonal from r1c2 to r5c6. The rest of the constraints seem to suffice to determine all the digits at the end.
I don't see how you can resolve the 1356 deadly pattern in the central two rows, at 1:10:45, without using that diagonal?
Really starting to get worried about Simon or his computer as this is yet another backup video! 🤔
Oh Simon, this was sooo painful watching you refuse to do sudoku in this sudoku puzzle to make pencil mark eliminations!
Has Finkz found her way inside your computer??? 😲
you should really fix your microphone. you seam to have a high end microphone. you should not have that much background noise. you can filter that out.
True
My computer used to make that noise. But an exorcism solved the problem. 🤪
Simon clearly cursed himself in the rules intro, when he said that maybe not everyone knows what normal 6x6 sudoku is!! (Also, thanks for the poem Simon, that was a good one.)
Actually this is the first CtC video in a long time that I found a bit boring, due to the frustrating shouting about doing sudoku... And yet I kept watching, desiring to know how everything would be sorted out by Simon eventually!
Love ya, Simon. But I was shouting furiously from about 50 mins. "Write in the 36 pair in box 2!"
The grey and purple squares were correctly colored from the beginning, lol.
Am I the only one who noticed that it would have been much easier if you would calculate that the top two rows, bottom two rows, and middle two columns must include a sum of 14 on the positive numbers and 28 on the negatives? Was being driven mad by it being ignored throughout (oh, and box constraints, of course)
I guess another pre-recorded video. Hope Simon's getting better
58:15 Nearly got saved from this 1 hour frustration inducer.
For once I was able to solve this puzzle faster than Simon using a very secret trick I tell only to my favorite people. Since you are still reading this comment, you are definitely one of my favorite people. The trick is using Sudoku in a Sudoku!
i got all that logic down and then i failed at adding up to 14. i am so mad at myself.
*SIMON WILL NEVER TEACH THIS TO YOU*
He prefers not to use it. I believe you may need a separate *aide-memoire* in this case. For instance, if you use a PC, you can use a second grid on a separate window. On a smartphone, you can open one instance of sudokupad on *TH-cam,* and the other on your favourite browser. Then you press the *|||* button twice to quickly switch back and forth.
The meta logic needed to break-in implies that a cage can only have two shading configurations. Either:
*1 doubler 3 negators*
4 1-2-5
5 1-3-6
6 3-4-5
or
*2 doublers 2 negators*
1-3 2-6
2-3 4-6
The first configuration always needs a *5.* The second one never includes a *5* and always includes *2, 3,* and *6.*
I used my aide-memoire to write down these configurations.
As soon as simon knows there is a 1245 cage in box 5 can he not just fill in the 3 in that box
Never been so early to a video, and a video was never as perfectly on time as this one. Im tired and should be studying for en exam but now im just going to relax and watch a sudoku :)
Good luck with your exam.
Good luck with exam! X
A pencilmark of 5 digits out of 6 possible ones is a bit ludicrous 😅
I'm convinced that Simon could have solved this in half the time if he hadn't used so many pencil marks, especially incorrect ones like 5 possibly being in c4 r1 and r2.
yaaassss, this puzzle is amazing!!
Argh! Simon. The 0 cage spawning from r1c1 does not have a five in. Therefore the 5 in box 1 is located r1c3 or r2c3. Which takes care of the 5 in the third column. Because the 0-cages in the top-right and bottom rights have fives in them, they make an x-wing and place the 5 in box 4 in r3c4 or r4c4. Are we not doing sudoku?
Edit: wow. Again. At 56:00 in, Simon can just write down 36 in r1c4 and r2c4. Does he not see the boxes in the 6-sudoku grid?
And why is the box six 5 not in col 4?
Variations on a song: 'That's six in the corner' or 'O Christmas negative-threes...', although this is, I am sad to say, another puzzle from the reserves. Simon, at least let us know how you're faring!!
There are way too many fives in row 1 and 2 for most of the video.
The written rules don't specify, but as you said in this video, it has to be the digits 1-6, and you do need to change that. I recently did one of your videos that went 0-8, so that's not a given.
44:23 for me, but I looked at it for about 12 minutes before that, then came to the video to check the rules, then restarted after that.
This puzzle was VERY fun, but it does need the rules cleared up.
The break in I used:
1. Because of the 2 cell diagonal at the top right, the grid contains one color change on the perimeter.
2. Due to the rules of yin-yang sudoku, there can only ever be zero or two color changes on the perimeter (change once, then back).
3. Because it's mathematically impossible to use three positive doubled cells in a cage to equal one negative digit, every cage must have a minimum of two negative cells.
4. Due to the rules of regular sudoku, 6 must be on every side of the grid.
5. 6 can never be doubled alongside a second digit in the same box, because no two negatives could ever equal it.
6. 6s that are on the perimeter and also in boxes must therefore be negative.
7. The top and bottom sides of the box must contain a negative 6.
8. Because of the shortest diagonal, we know where one of the two color changes are.
9. In order for two opposing sides to contain a negative, every corner between them must contain a negative.
10. The bottom and rightmost sides must be entirely negative.
Then I started on the logic of 5s that Simon used. But there were several other points where I was using different logic to his.
But 0-8 were not normal sudoku rules. Normal sudoku rules, in a 9x9, uses 1-9. Normal sudoku rules in a 6x6 uses 1-6.
@@RichSmith77 Yep, it's covered by "normal sudoku rules apply."
@@RichSmith77 that doesn't change that it's still useful to actually state, as Simon himself said.
Also, you made the error of arguing against an example and thinking that disproves the overall point.
@@wanderlustwarrior I was pointing out that the example you gave didn't prove your point. You gave an example that wasn't normal.
There's a difference between saying it would be nice if the rules clarified something, and saying "you need to change that".
I hope Simon doesn't use a laptop. In a regular computer, you just open the case and clean the fans. Or if you have a case with a dust filter, just clean the filter. If it's a laptop I thought you could use some air blowers to help clear some dust from the fans.
54:34 for me - I got stuck a couple of times and needed a hint from Simon.
A couple of times? Wow! I couldn't get this one it all 😢
We hear very few moments of that fan. For me it sound like maybe it sucked some kind of junk inside what needs removed there asap.
I couldn't watch this all the way through. Got so irrationally irritated 😂
NORMAL SUDOKU RULES APPLY 😂 I kind of feel like Caps-Lock is appropriate here 😅
How did he even solve it without basically using the actual boxes of the grid?
8:50 - It's Yinny-Yangly, I think.
So the reason for these backlogs may be because Simon's computer exploded?
23:41 for me
Obviously an old back-up recording done by Simon for use during his absence.
However, I would imagine that if Simon watched his own video I think he would feel very annoyed at himself.
Considering I truly believe that his solving is generally borderline genius doing so whilst being hugely entertaining I do not intend to be cruel by my comment.
Come back soon Simon.
Jesus H. Christ. 92:43 for me. I've stayed up way past my bedtime. But I managed it!!
I solved the pizzle in 23 min 🎉
You are precious
5
Good lord the refusal to acknowledge sudoku was a doozy this time around hah