Going From Zero Digits To A Solved Sudoku In 45 Seconds!

Simon does battle with Mounted Archery 3 - a completely crazy puzzle by AFrayedKnot. This puzzle is not "approachable" at all but it is brilliant fun!! You can play it here:
app.crackingth...
Rules:
Normal Sudoku rules apply. Circled digits must equal the sum of the digits on their attached arrow. Cells separated by a knight's move (in chess) may not contain the same digit. Bifurcation is not necessary!
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Watch Tantan Dai solve Glum Hippo's Average Arrow puzzle on Patreon here + play Scott Strosahl's new sudoku challenge!
/ crackingthecryptic
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▶SOFTWARE◀
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▶ABOUT US◀
Hi! We're Simon Anthony and Mark Goodliffe, two of the UK's most enthusiastic puzzle solvers. We have both represented the UK at the World Sudoku Championships and the World Puzzle Championships.
Thank you for watching!
Simon and Mark

[@undergroundmonorail]

I had the ultimate cracking the cryptic experience watching this video: yelling at Simon to do something obvious for 10 minutes before realizing I was wrong

[@mhenlopotter1612]

That's a classic! But I think I'm actually getting better - sometimes I find a digit long before Simon finds it ("long" = 20-30 seconds lol)

[@ApesAmongUs]

I had the same experience, but it was more like 20. I was convinced that dark grey was a 5, because I forgot that 4+8 also =12.

[@patrickolsson6801]

Let me guess, filling in the 89 in the blue square on the bottom? haha Me too!

[@undergroundmonorail]

@@patrickolsson6801 if i remember correctly, i thought the light greys were disambiguated *long* before they were

[@essentialatom]

My speciality is allowing Simon to make logical inferences that make progress, and then shouting at him for not doing something simple I would have done as if he's in the wrong

[@no-feetmcgee5577]

I have been waiting SO LONG for a puzzle on the channel that forced you to color literally the entire grid before finally disambiguating which digit is which. Today, my wish was granted. Hooray for coloring!

[@christopherbowers7236]

there was another one a month or two back, but the sections were not classic sudoku shapes. its called "all 81 sudoku digits completed in 14 seconds" and is approximately as satisfying to finally complete as this one

[@juliagabriele4706]

The transition from “wait, that’s a 6” to the instant solve was just awesome. You earned that fist pump, Simon!

[@lostincyberspaceIII]

I was yelling about the four there for what seemed like forever

[@Slimdante]

Since he filled in that yellow on row 9, I was up about the 5. Then in classic Simon, that's how he solves it, but the other way around.

[@Mattiasthesecond]

"purple plus two other digits wont equal purple" I dont think I ever heard such obvious statemnt made that would still confuse the living shit out of someone just getting into sudoku

[@aaaaanomaly]

another good one: "don't let your oranges see each other by knight's move"

[@gabojill19]

Half of this video, without context, sound like a hobo´s ramblings

[@afrayedknot81]

"These cells are a yellow and orange pair(pear). I managed to get two fruits into that sentence" - I actually laughed out loud.

[@b0kkeee]

I swear he's a comedian

[@Laraque27]

Haha, me too! Amazing comedy

[@lezzly8581]

Spoilt it a little by explaining it 😆

[@christianlett]

If he'd have said he had a lemon and orange pair, he'd have got three!

[@AnnaNicole.]

I laughed as well. Instantly had to come down to the comments knowing someone already called it out.

[@afrayedknot81]

Thanks again for featuring my puzzle Simon :) I can't wait to finish watching this

[@jovi_al]

Congrats as always!

[@erikoftheinternet]

It's like a weird quantum sudoku where you can only sort things into ambiguous sets, then when you have it sorted the sets all suddenly resolve into numbers. Did you set out to build it this way, or did you discover it while messing about?

[@adamtaylor5040]

Great puzzle. Love the last instruction you included.

[@JustWrite]

40 minutes in: "Time has just flown by" 65 minutes in: "Feels like a year has gone by"

[@Varksterable]

2 hours in: "Oh bobbins. Is this thing still on??"

[@johnf6825]

@@Varksterable a

[@mattiacurcelli1477]

Sudoku and Ori and the blind forest. Such a man of culture.

[@coolholio99]

I see you're a man of culture as well.

[@kbsanders]

When he misclicked, I somehow thought I did that on my PC and switched to a tab I had open of Ori.

[@justsomeguywhoneverdies9210]

respect+

[@Storyteller_iyagikun]

We have the same taste 👍👌

[@GoogleyMoogley]

It's an absolutely fantastic game!

[@euanmurray3676]

KZbin brought me here 9 months ago to watch a Miracle, and it's been the best part of my day ever since. Never done a sudoku in my life. Thanks for bringing some colour into these dark times, Simon.

[@bonneville1285]

... "it really isn't easy this puzzle" said 48 minutes in without a digit, that's another knowledge bomb from cracking the cryptic. Fantastic puzzle and solve.

[@malifex9922]

This is definitely one of my favorite sudoku solves in the last few years. Building the scaffolding for an hour and it all falls into place in seconds.

[@TheMeanderingduck6]

"Orange yellow pair... managed to get two fruits into that sentence" I died.

[@joeloedeman5160]

Simon (at end of video): I hope you guys got through it. Me: Are you kidding, I barely got through watching you do it!

[@russellbarnett7606]

Same, Joe. Same!

[@erikoftheinternet]

Simon, weaving numbers and colours together like the flash building a stained glass window in the matrix: I hope you don't mind if I go a bit slow here, I don't want to make any mistakes

[@Jodawo]

Simon: Is this a coloring book? AFrayedKnot: Nope, I'm AFrayedKnot.

[@bluelego4180]

Simon : Yes you are

[@michaelcarlson7301]

Color by number

[@dajoey2198]

wow that pun is brilliant, not gonna lie

[@sankalpsundar1668]

@@dajoey2198 that pun is literally why his name is AFrayedKnot 😂 it's not a coincidence

[@PetraTToth]

omg no XDDDDDDD

[@awalllen212]

I've been an on again off again viewer for about a year or a year and a half. I'm an intermediate solver at best and have never even considered setting a puzzle but since day one I've allways believed that if I could set a puzzle this is EXACTLY the puzzle I would want to set. I've allways imagined setting a puzzle where you pencil marked every single square and on the very last one you finally get a digit which springs back and solves the entire puzzle instantly. I'm flabbergasted.

[@davidstenton5181]

Fantastic solving. CtC must be the only YT channel where I enjoy watching someone thinking out loud for an hour. :D

[@arlenejenkins1127]

No matter how loud I scream and how many times I poke at the screen, Simon just doesn't pay attention to me!

[@zimmicks3170]

"Don't let your oranges see each other by Knight's Move" - Simon Me - imagining two oranges on horseback getting confused as to where their eyes actually are...

[@johnbee7729]

Because that would then make them potatoes (eyes)

[@TheNo1pencil]

That makes me thing of The Annoying Orange

[@MeMarvellous]

I love how he gave up naming the colors at the end (after taking so much time finding their places!) and calling them "whatever that is" instead

[@MichaelGreen831]

This solve reminds me of my old project management days. I would have people tell me some task only takes 1 day, but they'll neglect to tell me that it takes 6 days to prepare for the 1 day. Only took an hour to prep the board and 45 seconds to solve it.

[@seigneurchaton]

10:30 I love this ! "If I make the 6 firsts cells of the rows 1 2 3 4 5 6, they had up to 21, so the 3 others add up to 24 because the whole row add up to 45. So the last three cells are 7 8 9 !" Yes. Yes indeed if you make the 6 first 1 2 3 4 5 6, the last 3 are 7 8 9. :D

[@ceevio_art]

Simon loves to make the simple things as complicated as possible.

[@Anne_Mahoney]

@Seigneur Chaton, that's got to be the best username ever.

[@garycoroner6040]

That puzzle takes adult colouring to a new previously unseen level🥳🤓😱

[@NoobieTaco]

Imagine a color by number made entirely by Sudokus like this.

[@afrayedknot81]

Wow! Nice work Simon. I'm impressed with how quickly you nailed down the break-in. You found almost the exact intended path! I like how you used box 7 to make the deduction on black around the 50 minute mark. This is where I intended on forcing the solver to use a sneaky trick involving a relationship between some middle and high digits, but this is a lot simpler!

[@-mir85-36]

I was very proud of myself when I found that trick, was a bit sad Simon missed it (because I think he would have enjoyed it).

[@afrayedknot81]

@@-mir85-36 I assume you found that the high digit (789) that’s EXCLUDED from a 21 sum must be exactly 3 greater than the middle digit (456) which is INCLUDED in that sum?

[@-mir85-36]

@@afrayedknot81 No, sorry I misread your post. I used middle and low digits and the three horizontal arrows in boxes 2, 5 and 8. Considering the low orange digit in r5c5 there was one low and one middle digit left to place on each of the three arrows.

[@wildhusky4844]

How 'bout the following, saving me from any sneakiness :) ? At 45:28, the position of 6 in c4 is restricted to r1, r2, r4, because r5 or r9 would make the arrow sums too big. Hence r3c6 has to be 5.

[@afrayedknot81]

@@wildhusky4844 wow, nice find! There are definitely a few different ways to avoid coloring the whole grid, but aside from bifurcation I strongly doubt there’s a way to do it without any coloring (or alphabet sudoku)

[@taipruce-zimmerman1107]

"Bifurcation is not necessary" included in the rule set is amazing lol. I am so excited to watch this solve!

[@klaasbarends]

What does it mean?

[@offspec]

@@klaasbarends It means you don't ever have to guess

[@nadines.1107]

Judging by the title I feared this would be a short one, glad to see it it almost movie length!

[@ragnkja]

I’m guessing most of the video is spent colouring and restrictions.

[@nadines.1107]

@@ragnkja yes. Once he started colouring it was clear what the title meant 😂

[@Jodawo]

When I saw the title my 1st thought was Mark must have got his video out before Simon.

[@MichaelGreen831]

I came here for one reason, and one reason only. I've heard that every row / column, box has a unique set of digits and that they add to 45. How can that be? All said with tongue firmly pressed into cheek. Keep up the awesomeness, Simon and Mark.

[@joetucker971]

So tempted to skip to the end to see the part of the video the title is referring to but I'm going to make this as satisfying as possible and watch the entire thing to really buildup that final solve. (edit) oh my that was worth it 😂

[@cassie5025]

I started it and then zoned out so I had to restart it to also get the max satisfaction

[@NoobieTaco]

Exactly the same thing here.

[@garanceadrosehn9691]

I think this channel has run out of superlatives to use. When the *average* sudoku on the channel is somewhere between "excellent" and "amazing", there aren't words left when you hit a "much much better than average" sudoku. Impressive solve. Even more impressive that anyone could come up with a puzzle like this, and to do it with such a small rule set.

[@kimberlypreston6204]

When I first clicked on the video I didn't believe the title. After Simon started coloring I though oh, I get it.

[@Britske84]

Norinori and the blind forest!

[@nathanialblower9216]

Let the best part of my day begin!

[@Sujisan4]

100% agree.

[@paulunderwood4162]

I'm with you all the way with that. It's truly a great watch on a constant flow. Stay safe

[@leporid257]

The two single arrows see each other by knight's move. Since both the arrow and the respective circle are the same, they also see each other by basic sudoku. I love Simon's fancy logic.

[@canadiancruelty]

Possibly the fastest a title has pulled me into a video ever

[@giornalista]

Interviews Tantan Dai who solves a sudoku in under a minute. Publishes a video titled "Going From Zero Digits To A Solved Sudoku In 45 Seconds!" ... and delivers. We love you, Simon :)

[@LardoCulo]

Simon, your mind is magical. Not just for Sudoku but surely also for this gem you said (more or less like this): “So this is an orange/yellow pair... well at least I managed to get two fruits into that sentence.” I absolutely love this kind of mind warp, as I have the same tendencies! Always extra gems in this channel’s videos.

[@scoutdnr]

This is the puzzle I have been dreaming of for years. Colouring the whole grid before placing a single digit :)

[@Itsheisenberg]

When you’re bored of painting by numbers, try sudoku by painting 51:03 purple is the sum of black and dark grey 1:04:14 first digit 1:05:04 sudoku completed Absolutely incredible. A work of art in many ways

[@siorac1147]

That was insane. Such an elegant solve with great logic. Also, 'don't let your oranges see each other in a knight's move' is great advice for all walks of life.

[@simonheuberger8872]

Wow! Today was a pretty bad day for me but this video - especially the well-deserved satisfied laugh at the end - gave me so much happiness right now. Thanks, Simon!

[@mattfunnysocks]

One of the All-Time Greats for the Cracking the Cryptic Coloring Book

[@darrenhundt]

I've been watching these videos for about 8 months now and they are still consistently delightful.

[@Laraque27]

That was stunning, Simon! Great job colouring all the squares before solving as well. Thank you so much for being you.

[@hillrp1]

Not the first puzzle that's been solved in about a minute after an hour or so of colouring and hopefully not the last. I find them highly satisfying

[@Trandhal]

I know someone said this before but for the next software/software update, consider adding something that allows multiple colours in the same square. Maybe small colored dots in the corners, or just split the cell into 1/2 or 1/3 as to put in multiple colors.

[@Pfooh]

Letters instead of colours might work quite well as well

[@fuxpremier]

@@Pfooh I fear the day we will need multiple letters AND multiple coloring. But I know it's coming! :-p

[@Showsni]

@@fuxpremier Multiple numbers, colouring and musical notes in each square.

[@matteopascoli]

And highlight cells fith a fat border, not by tinting with yellow.

[@elizabethgrosvenor153]

Checkerboard. Tried that in the new software one, it deleted all the colour, sad times

[@chrisyorke6987]

Absolutely loved that one. My mind is truly boggled. How one constructs something like that I do not know. Hats off to AFrayedKnot.

[@ninao8460]

At 44:52 the first digit could be placed: Row 3: Box 1: 1+2/3+4/5=7/8 Box 2: 2/3+5/6=8/9 If box 2 has a 2 it will be 2+6=8 Leaving 1+3+4/5=7 in box 1 so box 3 needs: 3+5/6=8/9 Now looking at column 4 the only options for a 6 are in box 2 or in R4C4, all of those cells are seen by R3C6, so it has to be a 5 Therefore Blue=8, Purple=7, green=9 After knowing those it was pretty easy to use the arrows and fill in all the remaining digits

[@JohnStewartforSenate]

One of my favorite solves I’ve seen. I love when you have to break out the colors and the insta-solve at the end was beautiful.

[@joaoenes]

"These two squares are an orange yellow pair. Managed to get two fruits into that sentence. At least an homophone to pear anyway" This is the true reason one watches this every day :D

[@Tinivee]

The ending of this puzzle is everything I ever wanted from this channel. All colors that just solve to the numbers in no time at all.

[@PauxloE]

Simon: "I will not pull a Goodliffe". Also Simon: Starts putting in all the options in the circles.

[@adamheywood113]

"What kind of sudoku you want?" "I really used to like the books about Elmer the Elephant when I was a kid" "Say no more fam"

[@abhijittapadar1813]

This is a record for not having a digit.. well done simon.. Love the puzzle..

[@bristolrovers27]

Incredible puzzle Excellent dogged solve by Simon, who appears to be afraid to use sudoku on occasions (an interesting trait in a sudoku solver )

[@Varksterable]

I like the times he says things like "maybe I should just try some sudoku now" or "maybe I'm missing some sudoku" or even just "by sudoku" with a tone that seems to blend resignation, annoyance, bewilderment, and even something bordering contempt. "Oh bobbins; the really clever logic stuff seems to have run out now. Suppose I better get back to 'business as usual'." I find it funny and humbling that (as someone who still struggles with regular, classic sudoku) Simon seems to find the logic embedded in 'normal sudoku rules apply' as something like merely doing the washing up after cooking an exquisite banquet. If the channel was called 'Cracking the Sudoku' this would probably irritate me a little. But it isn't, and it doesn't. I love it. 😁

[@sama477]

Ori and the Blind Forest? Now we know Simon has good taste in video games.

[@asbjrnfossmo1589]

We knew that from the last time he misclicked, and a StarCraft II pro game was on the other tab =)

[@kylezyx1]

@@asbjrnfossmo1589 can you link the video please?

[@asbjrnfossmo1589]

@@kylezyx1 I couldn't find it very quickly, but in the intro of this other video it is discussed: kzbin.info/www/bejne/nmXXoYCYh7R9gLs&ab_channel=CrackingTheCryptic

[@antonberg5021]

Everyday I'm baffled that all the digits in a column, row or box of a Sudoku add up to 45. I'm unironicly loving it

[@bellapostle1629]

Watching this reminded me why I watch videos about sudoku in the first place, because of his true joy when he makes a deduction and because of his humble genius. CTC is so wholesome!!!

[@serebix3685]

The feeling when Simon color a cell and not instantly put the know pencilmarks in fills me with a strange anxiety. I just want to put him to input it right away so its tidy and can't be overlooked.

[@esmewarmuth8780]

Simon slowly loosing his mind over a knight's move rule makes me chuckle every time. I'm the same way.

[@tai3461]

Definitely need to make a compilatiom video of every colour. Just kidding. Love every video you're making, love the logic behind it, but could never do it myself 😅 Keep it up, I'm looking forward to seeing more amazing puzzles and solves in the future. Greetings from germany Tai aka FlyingAngel. ❤️

[@JackH342]

I stumbled across this channel during lockdown (original flavour) and have been amazed by these videos ever since. It's quite rare that I can see all the logic needed to get the ball rolling and this puzzle fell into that category. I am so grateful that these videos not only get past the break in but explain it. Seeing all of the colourful logic that followed was incredibly exciting, especially the way that Simon goes around the houses and finds the same conclusion I did with acrobatics that reveal some other secret that I would've missed for a while. Even though I didn't get this one myself the power of this puzzle, the set up of all the colours leading to the acceleration from 0 digits to solved in 45 seconds, it's the most excited I've felt with sudoku. This puzzle was truly special and something I would likely not have been able to experience without this channel. Thanks for making all these lockdowns easier to get through!

[@coolpapabell22]

This puzzle is incredible. There are several places where you can use certain sums that can't happen to rule out possibilities. at about 35:00, the blue in r2c5 can't be orange plus purple, so the orange in box 2 has to be in c6. At 42:00, the purple in r8c1 can't be black plus dark grey, which lets you place the black in r7. I'm sure there are other spots like this I didn't see.... Lovely. Edit: Oops, should have waited for Simon to notice that purple. :D

[@warbraid]

Let's get cracking 4:01 Sum of the digits 1-9 add to 45 10:07

[@russellbarnett7606]

“Bifurcation is not necessary” - ah, that must be why Mark isn’t recording this solve 🤣

[@owen_fritts3767]

can you explain to me what bifurcation is?

[@russellbarnett7606]

@@owen_fritts3767 In general it's when instead of using logic to determine the next move you just pick a spot for a number from its current possibilities and then follow it along the solve path to see if you create an impossible situation, which would tell you that this was the wrong choice. The difference between this, which Mark sometimes does (as do most competitors in high level contests), and Simon just talking through things 3-4 moves ahead, is a bit fuzzy to me. I think it is meant to mostly be a running gag between the two of them.

[@owen_fritts3767]

@@russellbarnett7606 ok thank you for the explanation.

[@GreenMeansGOF]

@@owen_fritts3767 It basically means “guess and check” which is a strategy that Simon does not like to use. Suppose that you know that a cell can only have two digits, say 1 and 2. If you guess 2 and you check how that affects the rest of the board and eventually come to something impossible, the 2 was wrong so it must be 1.

[@erikoftheinternet]

I finished this mostly on my own taking a few hints from your video as I went. It's a really beautiful puzzle. I love how it makes you solve the entire puzzle for ranges, then lets you reduce those ranges to individual numbers. You really just have to accept that frayed not isn't going to give you any numbers until the end and settle for abstract symbols (i.e. colours) for the entire solve. Instead of finding the numbers to solve the sudoku, you're solving the sudoku so you can find the numbers.

[@SigDel676]

I always enjoy when the puzzles end up looking like Elmer the Patchwork Elephant

[@TheArdanOB]

Always proud of myself when my time is lower than Simon's, until I consider that I'm not giving a TED talk while I crunch the bleeding numbers...

[@100beep5]

Hell, you should be proud that you’re doing so well! I can barely solve them half the time.

[@emrekolotoglu5133]

This puzzle is definitely one of the best puzzles I have ever seen in this channel. I am proud of being able to solve it myself. I have sent a puzzle with exactly the same rule set and no given digits to CTC but it did not appear in the channel. After solving this puzzle, I understand that my puzzle was not that clever. This puzzle has a very elegant solution. The way it is solved is absolutely amazing. Man! How did you construct this puzzle? It is complete madness. By the way, I did not watch Simon yet. Now, it’s time to watch Simon’s lovely demonstration of how to solve the puzzle.

[@bobblebardsley]

This video wins the awards for fastest ever solve from zero digits to completed grid, and prettiest completed grid.

[@sgroom8137]

Being down under, this was the end of my Thursday .. but it was worth waiting for and I giggled almost as much as Simon at the end .. brilliant, thank you AFrayedKnot & CTC

[@anidleteen]

This is utterly insane This was a crazy way to solve without doing a Goodliffe The ending was just superb

[@jovi_al]

I tested this puzzle for him... I most certainly had to ask him for hints! It's hard, yeah.

[@PuzzleQodec]

Brave, haha. Glad you did though!

[@jovi_al]

@@PuzzleQodec thanks Q! I am too :)

[@Pigeon0fDoom]

I saw your comment and waited 24 minutes for it to show up!

[@nityantagarwal2532]

I too tested it.... but could complete it with a very minor hint. Super glad It made it here

[@jovi_al]

@@nityantagarwal2532 Me too!

[@reubenmckay]

Anyone else wondered if construtors are thinking "I wonder how many colours I can get Simon to use on this one...?" while they construct?

[@afrayedknot81]

Not gonna lie, the thought definitely crossed my mind when first creating this one

[@staltus]

@@afrayedknot81 9 color achievement unlocked.

[@taipruce-zimmerman1107]

​@@staltus now someone needs to make him use more than 9 lol

[@MadSpectre47]

@@taipruce-zimmerman1107 I've set one just two days ago that does this. Will submit it shortly, hopefully it's accepted.

[@aarondobson8433]

This is my new favourite solve, by far! I was so worried you would solve it before colouring the entire grid. Incredible work Simon, truely :) :)

[@erayuykun9192]

That satisfying moment when you complete the puzzle and just laugh.. you make my morning that much more enjoyable :)

[@davidsmith1998]

I've really gotten used to getting these handmade puzzles every day! Perhaps I need to click that patreon link...

[@956675]

I did that recently. Definitely worth the $3 a month that I pay. I also probably get better value than most because the puzzles take me longer. I am finding the valentines day hunt to be very difficult but a lot of fun.

[@Varksterable]

Despite still not really looking at the extra content yet, I did this a while back now, and it's definitely worth it. On the one hand, I feel a warm glow about supporting the channel. It gives me more entertainment every day than entire movie download would, but paying less per month than a single daily film would be. On the other hand, the extra content is there when I do eventually feel confident enough to genuinely have a go at the extra puzzles. On the other hand, I've plegded to give up a few beers or packets of crisps a month to cover the cost. This time next year I'll be the healthiest person on the planet. Win-win. And on the other hand, you have four hands. Which is a bit odd. I probably should start colouring them in, so I can easily pair them up with all four feet...

[@eoester]

Absolutly amazing to see the process of cracking the puzzle. Felt really like a journey through a deep dark jungle. And in the end it foldet all out perfectly like a butterly comes out of a cocoon. Just wow!

[@michaelschnick8506]

Truly amazing ... can't stop watching these videos. It's brilliant to see the logic ticking behind your solving skills... congratulations on every single solved sudoku.

[@mikepictor]

it would be amazing if the software allowed + and - as pencil marks. To notate a cell as "4+" would be so nice.

[@garanceadrosehn9691]

If I understand what you're saying, I think you'd want both the lower-end and upper-end. So '4-9', which is still shorter than '456789', but also gives the option of '4-8' when you can rule out the '9'.

[@rpettnz]

@@garanceadrosehn9691 The only problem I can see with this is that it might throw off scanning. Say you're looking for 8s, and you miss the 4-9 cell because it doesn't blatantly have an 8 in it.

[@garanceadrosehn9691]

@@rpettnz - Well, that will happen with the "4+" notation, too. I'd expect to use the shorthand version only when you have too many digits that you want to put in one cell.

[@KnotXaklyRite]

My man out here watching some quality Ori and the Blind Forest

[@jovaji72]

A fully coloured grid and a 30-second solving. Can't imagine a better ending .

[@coryd531]

“These two squares are an orange-yellow pear.” 😭 41:00

[@ChrisWCorp]

Simon starts filling in colors right when Dorothy opens the door to Oz

[@EdoTimmermans]

Such a joy to watch this, I loved every second of the solving process! Thank you! :)

[@NamenBrauchIchNicht]

Hey, i got one of your Videos on the front page and was fascinated by the look of the Sudoku. I did not do a Sudoku for years. You got me to Start this Puzzle. I needed one tipp with the logic of the sum of the three rows with the six Boxes with arrows. Took me 4,5 Hours to finish. After That i really loved to watch the Rest of the Video to see how you did it. such a Great work. Even if i needed a big tipp and several hours, i am still proud of myself. This was fun. Thank you.

[@tomaskot9278]

I was quite confused when I opened a video with "from zero to solved in 45 seconds" in the title and the video was 1+ hour long :) But very soon I understood :D

[@noelbright7573]

Absolutely love this channel! Got hooked after your miracle sudoku video months ago and I think this one is about to have me binging videos for a while again

[@flyinhawaiian3610]

These are my favorite kind of puzzles... the ones that use so much logic that one moves collapses the entire thing. And everyone loves coloring 😆

[@HalcyonAcorn]

Fastest finish ever!! That was such a fun puzzle to watch you do. I'm sure you had fun, at times!!

[@qazwiz]

39:45 after using new software FOR WEEKS Simon finally learns he can use black

[@glennmelven3414]

I looked at the title, looked at the video length and knew Simon was going to color the whole grid and I would just watch.

[@ryfors]

As much as I couldn't tell a lot of the colours apart I agree that this was very entertaining and an incredible puzzle. Thank you as always!

[@piarittersporn]

A real masterpiece. After having at least seven 9s and already two/three 7s and 8s in the right place, I ran into errors again and again, so I erased everything ...several times ... until I decided to just watch. This colorful technique is overwhelming. Simon, how does it feel to be a genius?

[@AlonAltman]

it would be nice if the software would allow you to add letters rather than just numbers both as digits and as pencil marks. Then you could use letters instead of colors and have letter pencil marks. I guess you'll still need to write down a reminder which letters can be which digits, which is another useful feature. This can also help with letter-coded puzzles. In any case, great solve!

[@KeithGrant]

I absolutely love the puzzles like this, when you can fill in the whole grid with information before placing a digit, and then all the digits fall into place.

[@mitnehmerrippe]

I love those long videos so much. I always know I’ll have an amazing evening when one of those pops up as a notification!

[@PathOfShrines]

This took me over three hours! There was a sum in the right columns I just didn't find for the longest time. Once I had that and was able to start coloring, it went a lot faster, until finally it all came together in about a minute. Great puzzle.

[@asphias]

The trick i use for these kind of coloring puzzles is to use numbers as placeholders. you know 4 5 and 6 are yellow red grey, so just assign each a number. Then you can go through the grid using the normal corner and center markings, which probably allows you to deduce some new colored squares. Once you can find no more new numbers just remove the numbers but leave the coloring, and you can move on with the arrows again.

[@JimOMoore]

I love how for 1 minute at the end there you channelled your inner Tantan Dai. She would be proud of that final sprint. :-)

[@yoncole]

The spectacular finish took me out of my body! Euphoric with the appreciation for the quality of puzzle solving!

[@kaylalyons4461]

Thank you for all the uploads. I look forward to every video and appreciate the challenging puzzles. Your commentary while solving is top tier 😂