An Almost Astonishing Sudoku Trick

** TODAY'S PUZZLE **
This is Simon's first time tackling one of Arbitrary's sudokus. It's called Things In Common and, well, it's completely brilliant. We're not sure how easy/difficult this one is - Logic Masters says 4-out-of-5 stars. It's the kind of puzzle that you could be stuck on for days until you see the trick!
Play the puzzle at the link below:
sudokupad.app/q80drlpksu
Rules:
Normal sudoku rules apply. Digits along a pink "renban" line form a consecutive set without repeats. (These digits can appear in any order.) Digits within a cage do not repeat and sum to the indicated value (if given).
** NEW SUMGEONS & DIAGRAMS PUZZLE **
If you enjoyed our recent Dungeons & Diagrams streams then definitely check out the new puzzle by sunnyjum, Sumgeons & Diagrams, which combines D&D and sudoku in a brilliant way. The puzzle can be played completely free over on Patreon (and Simon's solve of the puzzle is available behind the paywall).
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
** GET OUR FOG KICKSTARTER DELUXE & OUR BOOKS **
Check out this link for the kickstarter books and Fog Novella we've created over the years:
coffeebean.games/product-cate...
▶ SUDOKU PAD - Use Our Software For Your Puzzles ◀
You can input classic sudoku puzzles into our software and help support Sven, the programmer responsible for the wonderful user interface we all use to play these puzzles everyday. The app also comes with 12 handmade puzzles from us:
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ALSO on Amazon: Search for “SudokuPad”
▶ Contents Of This Video ◀
0:00 Theme music and puzzle intro
1:02 Sumanta's new Miracle sudoku
1:18 New Snake Egg Sudoku Hunt coming soon
2:32 Dungeons & Diagrams sudoku & video!!
2:56 Happy Birthdays
6:26 Rules
7:54 Start of Solve: Let's Get Cracking
▶ Contact Us ◀
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email: [e-mail]
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Simon Anthony & Mark Goodliffe
Box 102
56 Gloucester Road
London
SW7 4UB
(Please note to use our real names rather than 'Cracking The Cryptic'.)
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We also post the Wordle In A Minute videos on TikTok.

[@jensschmidt]

The first thing I discovered, aside from Mr. Phistomephel, was the fact the none of the 23 cages would work if the lines were 12345, because then the fourth digit in the cage would have to be a minium of 11, which doesn't work. That meant instantly, that no 1 could be on the pink lines and therefore on the ring. And then I got stuck, quit and started watching the video. 😀

[@jkid1134]

You got the first three steps! (the third of which is getting stuck)

[@Paolo_De_Leva]

Yes, the 23 cages played a crucial role.

[@woif00]

Same here😅

[@st3phgr1ce]

I just love Simon’s self-imposed rules on when a 3 in the corner gets a song 😂

[@inplfw]

Especially wonderful how it seemingly caught him off guard him when he placed it there. Edit: ...twice :D

[@asmolyeti6689]

Oh I totally agree I’ve loovveeed watching him recently and I used to watch him a bunch like a year into covid and then I kinda just stopped so I have no idea when he started doing it and I’ve been suuppeerr curious when he started

[@Babinzo]

For those who are already familiar with it, the proof of Phistomefel ends at 13:12

[@Pointlesschan]

They included a chapter in one video with the end of the proof… wish they would do it all the time for phistomefel puzzles

[@JohnGottschalk]

Nice

[@vaguevague]

I think they said that they got feedback that creating chapter titles for the proofs counts as a “spoiler”. I personally don’t mind, but I can see how if you prefer to find the break-in yourself you might not want to know what proofs they talk about in the video.

[@debrabowen4276]

I love watching Simon prove things!

[@MaierFlorian]

You know sh*ts going real when Simon starts saying his thoughts are interesting even at a party 😍 (though we all know he would be indeed an interesting person to talk to at a party also with his "normal" thoughts)

[@BrentAureliCodes]

Thanks for the birthday wishes! My wife had to keep it a secret from me since the 19th! What a surprise

[@davidenas]

I don't think I've ever seen a Sudoku grid that screams Phistomefel Ring as loud as this one.

[@HunterJE]

So much that I was initially kind of suspecting it would be a red herring (herRING?)

[@dicebar_]

"The Renban Collider" would've been a really cool name for this puzzle too 😊

[@codenamevoid2421]

One of my favourite things about my day is watching the new ctc, and seeing ur smile right from the get-go, brightens my day without fail

[@zimmicks3170]

"It's gonna be an aweful lot of digitage" - Simon 2024

[@emisformaker]

Red velvet cake is chocolate cake. The red colour originally came from the interaction of cocoa powder with vinegar, but now generally comes from red food colouring. The main difference, apart from the colour, seems to be the way the cakes are frosted. A typical chocolate cake is often frosted with chocolate frosting, whereas a red velvet is adorned with cream cheese frosting.

[@katiekawaii]

It should have less cocoa than a chocolate cake though. That and the vinegar make it its own thing.

[@pardox28]

53:48 was my time. This channel must be making me smarter as I don't think I would have solved this puzzle 2 years ago.

[@chocolateboy300]

I finished in 130 minutes. I was unable to do this one in my head, so I had to write things down. Even then, this puzzle was brutal, although I seemed to be consistently making progress, so I never felt stuck. This puzzle also never gave up and resisted the whole way through. I thought as soon as I got a digit, that it would speed up. It did not. It wasn't until the very end that it unwound, surprisingly on the 25 cage in the top right rather than the outlier 26 cage. This was very fun, hard but fun. Great Puzzle!

[@jaymuse127]

I love the eventually of the reduction of pencil marks

[@homewort-gf2ni]

Gorgeous puzzle! Well done, Simon

[@Paolo_De_Leva]

Extraterrestrially smart geometric constrution. Magic role of the *23* cages. Masterful solve by Simon. 👏👏👏👏👏👏👏👏👏

[@MyriamTT]

Wonderful puzzle. Thank you !!!!

[@bobblebardsley]

I just love the pattern of the clues in the grid. The Phistomefel ring with the 23 cages at its corners and then the corner 2x2s, it looks like four short chains flailing off of a cog or wheel. Love the logic to determine the triples and place the first digits, very smooth and satisfying.

[@Mn0ty]

28:45 the easier way to see it is by noticing because the renbans on the corners see one digit of the renban on the ring, thy must be opposites, therefore there are two cells on each corner box which see all 1 to 9 digits.

[@benjaminvazquez1243]

That's the way I figured it out. Really quite elegant.

[@PassionPopsicle]

Yeah, another instance of Simon doing it very elegantly, but also unessecarily complicated

[@RichSmith77]

​@@PassionPopsicleI'd hardly call it complicated. The first thing I noticed was there could never be a 1 on the inner renbans because of the 23 cages, and consequently, there couldn't be a 1 on any of the corner renbans either, by Phistomefel.

[@Paolo_De_Leva]

Similarly, it was easier for me to see that wherever you placed *1-2-3-4* along the ring, by plain sudoku three of these digits would be instantly pushed into a single cell of a corner box. For instance, if you put *1-2-3-4* on the left and right sides of the ring (which is the only possible configuration in Simon's example @26:22), by sudoku the left side would lock three of these digits into *r3c1* and the right side would do the same into *r7c9.* And by the way, a similar problem is created by the *6-7-8-9* sequences on the top and bottom sides of the ring. You need (elementary) arithmetics to use Simon's method. I believe this is simpler because it just uses (plain) sudoku constraints. Of course, later you will need similar (but not identical) arithmetics to rule *1* out of the long renbans and hence push *6* into both the long and short renbans...

[@jkid1134]

A real moment of euphoria there when you found the final piece to the logical loop. Spectacular puzzle.

[@MarkBennet10001]

What a beautiful puzzle - really impressed

[@inspiringsand123]

Rules: 06:33 Let's Get Cracking: 07:58 Simon's time: 1h4m35s Puzzle Solved: 1:12:33 What about this video's Top Tier Simarkisms?! Phistomefel: 8x (08:10, 08:17, 09:29, 10:10, 15:57, 16:25, 17:29, 22:39) The Secret: 4x (16:52, 16:52, 16:56, 1:06:14) Three In the Corner: 3x (14:58, 15:00, 21:18) Maverick: 2x (15:34, 15:41) Bobbins: 1x (36:54) And how about this video's Simarkisms?! Hang On: 11x (15:52, 29:54, 40:41, 41:18, 50:38, 52:07, 52:07, 52:11, 1:04:13, 1:08:29, 1:09:12) Obviously: 9x (02:26, 07:43, 14:49, 21:56, 27:55, 28:32, 31:05, 49:32, 1:02:35) Ah: 9x (16:21, 25:32, 25:32, 36:49, 36:54, 52:07, 52:07, 1:03:54, 1:07:47, 1:09:23) Weird: 7x (19:13, 19:31, 20:04, 34:56, 44:35, 1:00:52, 1:01:16) Sorry: 6x (03:32, 19:22, 21:07, 31:07, 33:50, 1:00:52) The Answer is: 5x (19:39, 19:45, 19:50, 44:30, 45:35) Lovely: 5x (02:20, 04:11, 04:23, 1:01:16, 1:01:49) In Fact: 5x (16:46, 20:46, 38:49, 49:08, 53:02) Snake: 5x (01:32, 01:39, 01:42, 01:43, 01:48) Pencil Mark/mark: 5x (25:01, 41:32, 41:40, 49:01, 54:06) Goodness: 4x (40:53, 1:12:20, 1:12:31, 1:12:35) Beautiful: 4x (08:34, 47:18, 56:59, 1:14:06) Cake!: 4x (03:20, 04:38, 04:38, 04:43) Clever: 3x (1:01:38, 1:13:32, 1:13:39) Brilliant: 3x (02:48, 57:41, 1:14:03) Ridiculous: 3x (08:26, 47:15, 1:10:04) Shouting: 3x (03:43, 03:57, 05:07) Wow: 3x (33:50, 1:12:47, 1:12:47) Stuck: 2x (02:51, 1:14:02) Gorgeous: 2x (52:11, 1:02:53) Unbelievable: 2x (59:36, 59:39) Phone is Buzzing: 2x (13:13, 46:28) Good Grief: 1x (39:30) What a Puzzle: 1x (57:41) Bother: 1x (1:02:19) Nonsense: 1x (35:06) Naughty: 1x (1:06:18) Incredible: 1x (05:30) Deadly Pattern: 1x (1:11:29) By Sudoku: 1x (52:46) Epiphany: 1x (42:40) Surely: 1x (43:55) Doesn't get a Song: 1x (15:02) Proof: 1x (08:31) We Can Do Better Than That: 1x (30:24) Fabulous: 1x (1:09:59) What Does This Mean?: 1x (07:27) Most popular number(>9), digit and colour this video: Twenty Three (15 mentions) Two (105 mentions) Blue (19 mentions) Antithesis Battles: Low (9) - High (3) Even (9) - Odd (0) Lowest (2) - Highest (0) Column (12) - Row (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!

[@Orenotter]

I set up two screens for great viewing My eyes to one screen won't need gluing Though I watched the whole bit I am forced to admit That I've still no idea what you're doing. True story. Two screens, utterly lost.

[@davidhughes7174]

thank you Simonfor the solve of another interesting puzzle.

[@anaayoung9142]

Very logical puzzle, but too hard for me to do alone! Thanks for the solve! I need some of your help to try this one! 😊

[@agoristtaxadvice]

Wow- that was a brutal puzzle to start, but once you get the 567, gets a lot easier. Lovely.

[@chipsounder4633]

Loved that puzzle.. im running out of ways to compliment all the setters and solvers. Because of you all, i can solve 3/5 difficulty (killer sudokus) even did a 7/10 in under 21 minutes without bifurcation. Proud of all of you ❤

[@alaricschenck8051]

When one is solving sudoku and both engines have gone out and you are looking like you are going to have to land in the Hudson just remember "One must not sully the sequences!"

[@Paolo_De_Leva]

I know about Captain Sully and his miraculous emergency landing, but I cannot understand your use of the word "sully" as a verbe in this context. 🤔

[@Paolo_De_Leva]

I see, "sully" is not only a famous surname, but also a verb in English. And Simon uses it @27:18

[@jessevennard2640]

27:17 one of you brilliant constructors please make a “sullied sequences” puzzle (maybe a wrogn puzzle with one digit missing from the sequence on each purple line)

[@Cuatro-ps1ov]

As another Josh(ua) who turned 36 on April 28th, I appreciate the birthday shoutout to my name-buddy and hope everything is well.

[@markp7262]

54:37 finish. Such fun logic on this puzzle, and each time it chains around everywhere. Excellent!

[@janerobson2297]

First digit at 58 minutes! Well done for persevering!

[@yellingintothewind]

The offset pseudo-boxes can also help fairly early on. Since the totals are known, and 6 of the cells are in common, you can find the relationship between the sums of the 6 cells which are not in common. For example, the top 3 cells of box 4 must sum to 3 more than the top 3 cells in box 1. Doesn't help that much with the break-in, but would have helped with the stall in the middle.

[@malvoliosf]

(1:11:55) I’ve got a bad feeling I’ve made a mistake here... (1:12:27) [Done] What a difference 33 seconds makes.

[@piarittersporn]

Great puzzle.

[@frankjiang1857]

Finished in 72:31. Yeah, it takes a while to figure out the break-in for this, but once you have a good understanding of it, it goes fairly smoothly. But getting to that understanding takes a while. Fun puzzle!

[@biaberg3448]

Beautiful happy puzzle,

[@jdyerjdyer]

The opening and the 567 logic is very pretty. :) Gotta put a ring on it!

[@jdyerjdyer]

My time (1 hour 9 minutes) was on par with yours considering the first 13 minutes were greetings and explanation of the ring pattern. I was surprised, as usually one like this takes me hours, but the ring pattern just screams at you and the renbans always have a special relationship with the 5 if they are of a decent length, so I knew that was the opening start and I absolutely loved the interaction of the two coming together, especially the "all or none" logic followed by the 567 slow burn. Just beautiful setting!

[@TheMoncikM]

At last, it’s time for some peace

[@nataliecrow8716]

i tried this one myself when it came out and i just couldnt see the step of locking 6 onto the lines, even after ruling out 1 and 2 from all of the renbans it just didnt occur to me 😭 im really happy to see the puzzle featured cus i can finally put the nagging feeling to rest :)

[@six_5000]

46:28 but I definitely overlooked some possibilities now that I'm watching S work through, so it feels as unearned as a song for an example three

[@wanderlustwarrior]

Ah, got my first (correct) digits at 35:50 in, but messed up the puzzle with an assumption earlier than then, that I didn't realize until checking the video. I'll try again another day.

[@LednacekZ]

44:15 for me. the starting logic of PhiRing was great, but i kept running in circles. Took a while to crack.

[@iceberg54321]

Another way to see that the fives would never work outside the ring is that some cells, like r8 c7, would see all nine digits and have no fill.

[@Paolo_De_Leva]

Similarly, wherever you placed *1-2-3-4* along the ring, by plain sudoku three of these digits would be instantly pushed into a single cell of a corner box. For instance, if you put *1-2-3-4* on the left and right sides of the ring (which is the only possible configuration in Simon's example @26:22), by sudoku the left side would lock three of these digits into *r3c1* and the right side would do the same into *r7c9.* And by the way, a similar problem is created by the *6-7-8-9* sequences on the top and bottom sides of the ring.

[@MAUOMBO]

an amazing puzzle

[@ericpraline1302]

I'd never have guessed that those 23 cages would be so useful.

[@angec9908]

Your grid colorings are always so beautiful

[@liiiinder]

Looks similar to the one from last week!

[@Rach881101]

56:51 for me. Interesting puzzle!

[@bait6652]

The beauty of discovering what goes on corners of the PF-ring only to.realize one of the digits u don't have in all ur 23-sums listed....

[@TurquoizeGoldscraper]

62:38 for me - it took me 41 minutes to get a digit in.

[@GreenMeansGOF]

The Phistomefel ring doesn’t need to be proven anymore. It’s well known. You often say that you prove it for the new viewers but at this point, I think it’s fine if you just tell them to look it up.

[@thatonerisottosimp6791]

HI!! I had sent in a birthday request for today (the 28th of April), but it seems it hadnt gone through :( (Unless this is pre recorded) is it possible to check on that?

[@CrackingTheCryptic]

Whose birthday was it?

[@thatonerisottosimp6791]

@@CrackingTheCryptic Luca, 17th birthday!!

[@longwaytotipperary]

Happy birthday, Luca! 🎉

[@thatonerisottosimp6791]

@@longwaytotipperary awh thank you!!

[@doublepudge465]

Anyone know which video Simon first discovered the Phistomofel ring? Would like to go back and watch again to see how he first reacted.

[@DIYTAO]

It's video " Brand New Sudoku Trick You Won't Believe! " Title is quite clickbaity.. :-) Link, if it works.. kzbin.info/www/bejne/kH3Glqxtps6LrJo

[@MarushiaDark316]

@@DIYTAO The title of that video and this one are also quite similar.

[@ActionLuzi]

@@DIYTAO I'm not sure if that's the correct video. He states the mentioned video has 1.3 million viewers. But your's have "just" ~186'000s.

[@DIYTAO]

@@ActionLuzi Ah.. This was one I found and Simon talks about new mind blowing trick. It's been years so I can't be sure if that's *the* first one. Would be nice if there were a Index of all videos, there are so many and it's really hard to find the right one.

[@stevesebzda570]

@@DIYTAO Yes, I think that's the one. I remember because Simon used a lot of additions or whatever , then saying "not only are the totals the same, the actual digits are the same." He explained it better the next day or something (and has since whittled it down to how you see here). The one with "1.3 million views" was a numberphile video Simon was on a couple months ago. I think you have the right one.

[@guilded0n3]

If you like chocolate cake you already like red velvet cake by default. Red velvet cake is chocolate cake that is lightly chemically bleached with baking soda or something like that to be red.

[@CrankyOtter]

I think your point about corners is under discussed: the 4 corner digits cannot fully repeat across or down because 4 digits can’t fit in the 3 squares of the intervening box adjacent to Box5. This is true for many 2 2x2 boxes that share 2 rows or 2 columns, but the corners are easy to locate. (Does anyone know if a puzzle has been set that relies on this without necessarily including the Phistomephel ring in the solve path?)

[@CrankyOtter]

At 57m of video, ~50m of solve, Simon discusses the break in symmetry - but only of the 3 cell cages. I could be wrong but I don’t think he’s noticed the 26 cage being different yet. It’s the only frustrating thing to see because he sees 180 things I don’t and I learned from Simon to prioritize noticing breaks in symmetry. he finds it at ~1h7m

[@CrankyOtter]

Really interesting all the way thru.

[@averygaron994]

"Almost" astonishing seems unusually backhanded for the channel

[@EricMill]

Cutting it close at 8:30, Simon!! =)

[@kodesart1251]

wow posted less than a minute ago! I've never been this early:D

[@angec9908]

Nooo! Not resorting to sudoku so soon!

[@PathOfShrines]

114:04, but I had to cheat with the video. :) I drove the logic as far as placing the 6's, but not the 7's; ugh.

[@j.d.rouanensignsteve6308]

40:02 I'm confused. I thought that if there is a digit that can't go in the ring, then it must go in the very center cell. Is that only the case when the diagonal lines have 9 unique digits?

[@estherwestbroek]

Yes that is the condition. I get you though! Luckily I remembered in time. Hope you didn't get into too much trouble.

[@HunterJE]

Simon repeatedly proves you can't have the same four digits in all four corners by sudoku but once you've already proven phistomefel there's an even simpler way-if all the 2x2s are the same digits, the corner cells of the ring would have to be from those digits, and would be a repeat in the box of the copy of that digit in the 2x2...

[@LithmusEarth]

38:13 if you can't have 1s, doesn't that force 6s onto the lines? Not a big revelation, just a thought.

[@AditaBattleForge]

spot on! i had to listen to the video to find out X-D

[@stevesebzda570]

Very good "Arbitrary." (Four syllables) Good job 0:21 Good job

[@MyriamTT]

1:09:00 It's always Sudoku, Simon. rs

[@lucaopunk]

you should sneeze, Simon. It's healthier than holding it in hehe

[@ThomasFifield]

Simon! This is important! GO AND GET YOURSELF SOME RED VELVET CAKE IMMEDIATELY.

[@kivasmith6773]

Hi! How can I make a birthday request?

[@angec9908]

And there’s Maverick, right on time.

[@hereharehere]

Watching video. Started reading comments. Not long ...

[@hereharehere]

Does Maverick know that s/he is Maverick? Has Simon ever said?

[@angec9908]

Oh no! Another false 3 in the corner.

[@johannesluber9862]

Around 26 minutes, Simon says we have 2 sets of extreme digits. But I don't see see why it can't be 3-7 for example. An overlap can have up to 3 digits. Why do we need to have 2 ones and nines?

[@RichSmith77]

He's initially talking about the four-cells renbans in the corners. If 5s are in the tips of the longer renbans, as shown, then there's a 5 in each of the corner boxes that prevents 5 appearing on the square four-cells renbans. If they cannot have a 5 on them, then they're either 1234 or 6789, so extreme.

[@johannesluber9862]

@@RichSmith77 Now I see. Thanks!

[@tonybrooms]

01:05:53

[@TriforceOfCourage97]

Why doesnt mark do birthdays and shoutouts and all that also on his videos? I would like to see Mark do the birthdays once in a while and him do these hard puzzles.

[@Paolo_De_Leva]

"Happy birthdays" to totally unknown people make no sense to me. And I am not the only one who always skips the chapter. Mark's short introductions are appreciated by many viewers.

[@TriforceOfCourage97]

@@Paolo_De_Leva i understand that but mars videos get a few 100 likes and simons get 1000's. i like both very much, 2 different styles and its fun to watch. im just saying that mark should do a few sometimes also.

[@Paolo_De_Leva]

​@@TriforceOfCourage97 I am surprised Mark is getting so few likes. I strongly doubt he would get more likes if he did birthdays. He would get some more if he did more elaborate presentations of the featured puzzle, including curiosity-arousing comments posted on LMG, when available. However, *solving and explaining* style is much more important, in my opinion. I always need to speed up the playback of Simon's videos by at least 1.5, but I guess most people loves his calm and passionate solving approach, his warm quasi-childish emotional reactions and his repetitive and lengthy, but easily understandable explanations. Mark's videos are beautiful, his language and solving skills are amazingly good, but not everybody can immediately grasp his phenomenally concise explanations (By the way, on the opposite, I love them wholeheartedly.) Secondarily, I guess sometimes Mark uses too much lightning speed arithmetics and lightning speed systematic case-testing in his solves, and this might scare people away. *Quality of feautured puzzles* might also be a factor. However, recently that of puzzles featured by Mark has stratospherically improved. Last but not least, *time of publication* plays a crucial role. People in most Europe and Africa, for instance, has plenty of time to post enthusiastic comments below Simon's videos before going to bed, while many of those who watch Mark's videos as soon as he publishes them (at around mighnight for countries near the *Greenwich* meridian) might be too sleepy to comment. As far as I know, KZbin's algorithm penalizes videos with smaller amount of positive feedback in the comment section.

[@TriforceOfCourage97]

@@Paolo_De_Leva i agree with you on all points. Mark gets low likes and its sad, I also really like his solving a lot. he is quicker and sometimes that's nice to see. It seems just that Simon is more of a people person who loves to do these videos and really enjoys then and Mark seems (only an observation and most likely not true at all) to just do it because it needs to be done. I enjoy both styles and I watch both. but yea, here Marks videos come on around 11:30pm. and I already watched a long Simon video lol.

[@PsychoSoldierPrometheus]

I'm so sorry for you Simon. These mean creators are sometimes forcing you to do Sudoku....

[@9MRSG]

Very hard puzzle

[@theredstoneengineer6934]

54:06 for me

[@artursketlers5560]

Just 47:41

[@DrygaYes]

Simon never used the cage without an indicated digit sum (ie R5C3-R6C3-R6C4). Not so clear why it's there in the puzzle.

[@demonduck132]

He used the rule that digits can't repeat in cages to place the six in box 5.

[@RichSmith77]

Yes. At timestamp 1:01:25.

[@charlesfinnestad6680]

first time watching with my new rescue dog Rufus. And he seems to like it. He never pays attention to what is on the TV.

[@Gonzalo_Garcia_]

29:19 for me. What a fantastic puzzle, loved it!!

[@nathaliea_girl4616]

I’m the zeroth like😂

[@angec9908]

I’ve been the zeroth like a few times. Never figured out why it doesn’t register other than you have to watch a video for a certain amount of time before liking it 🤷🏻‍♀️

[@portsnhman]

Phistomefel...zzzzzzz

[@MeriaDuck]

?

[@MeriaDuck]

Surely there was a time where you were exposed to the phistomefel proof for the first time, the zzz comment to me seems a bit unnecessary.

[@guruone]

@@MeriaDuck Never forget.... SET THEORY is cheating

[@Pointlesschan]

@@MeriaDucki personally wish he would include a chapter marking the end of proof like he did in exactly ONE puzzle in ALL of the ones that include the proof