On Your Marks... Get Set... Colour!

Our book is very close to release - thanks to everyone who supported the Kickstarter. If you still need to order it then you can do so here:
www.kickstarter.com/projects/...
Today's puzzle is the third in a sushi (?!) trilogy from Pseudonum. It's approachable, clever and it's called Tobiko. You can give it a try at the link below:
app.crackingthecryptic.com/su...
Rules:
Normal sudoku rules apply. In cages, digits must sum to the small clue in the top left corner of the cage. Grey lines are palindromes and must read the same forwards and backwards. Digits cannot repeat on either main diagonal (marked in blue). Cells separated by an X must contain digits summing to 10. Not all Xs are given.
PS If we manage to reach 400,000 subscribers then we'll be releasing a video where Mark and Simon answer community questions! Please email us at [e-mail] if you have a good question for them :)
▶ MORE PATREON MADNESS ◀
We've just released Heatwave, a set of incredible thermo sudokus by the astrophysicist grkles! (Don't worry you don't need to be a rocket scientist to solve them!) You can join us on Patreon here:
/ crackingthecryptic
▶ SUDOKU PAD - Our New App ◀
You can now input your own classic sudoku puzzles into our software using our new App! The app also comes with 12 handmade puzzles from us and it should be released any moment at these links:
iOS:
apps.apple.com/us/app/svens-s...
Android:
play.google.com/store/apps/de...
**************************************************************
▶ OUR NEW ARROW SUDOKU APP IS OUT ON ALL PLATFORMS!
Here are the links:
Steam:
store.steampowered.com/app/16...
App Store:
apps.apple.com/us/app/arrow-s...
Google Play:
play.google.com/store/apps/de...
▶ OUR NEW KILLER SUDOKU APP IS OUT ON ALL PLATFORMS◀
apps.apple.com/us/app/killer-...
store.steampowered.com/app/14...
play.google.com/store/apps/de...
▶ SIMON REACTION BOARD (!) ◀
With thanks to Andrea for creating this :)
simonreacts.avris.it/
▶ CTC FAN DISCORD SERVER◀
/ discord
NEW: Guide To Our Discord Server:
tinyurl.com/CTCDiscordGuide
▶ OUR BACK CATALOGUE - ALL CATEGORISED WITH LINKS!◀
tinyurl.com/CTCCatalogue
▶ OUR NEW THERMO SUDOKU APP IS OUT!◀
AppStore: apps.apple.com/us/app/thermo-...
Android: play.google.com/store/apps/de...
Steam: store.steampowered.com/app/13...
▶ NEW CRACKING THE CRYPTIC MERCHANDISE◀
teespring.com/en-GB/stores/cr...
▶ OUR CHESS SUDOKU APP IS NOW OUT!◀
AppStore: apps.apple.com/us/app/chess-s...
Steam: store.steampowered.com/app/12...
Android: play.google.com/store/apps/de...
▶TRY OUR CLASSIC SUDOKU APP◀
AppStore: apps.apple.com/us/app/classic...
Steam: store.steampowered.com/app/11...
Android: play.google.com/store/apps/de...
▶TRY OUR SANDWICH SUDOKU APP◀
AppStore: apps.apple.com/us/app/sandwic...
Steam: store.steampowered.com/app/11...
Android: play.google.com/store/apps/de...
▶SEND US PUZZLES TO SOLVE/CONTACT US◀
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▶SOFTWARE◀
Play the puzzle in the video by clicking the link under the video (above). We are building a website which will allow you to enter your own sudoku puzzles into the software and this is coming soon!
▶Logo Design◀
Melvyn Mainini
▶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

[@pseudonum2615]

Thanks for featuring my puzzle and making every day a bit more interesting. You guys rock.

[@tinyjake4352]

Most fun sudoku Ive dont in a while. Not too hard but just hard enough to be a fun challenge. Love the symetry, and I would rank this pretty high up on my favorites. probably up with Miracle sudokus which I really enjoy, just because they are usually not to hard but also just hard enough its a challenge and I like being minimalistic so that helps. Love the 1 digit because of that. Amazing puzzle, I hope to see more in the future

[@alainculos9294]

It is an absolutely beautiful puzzle, great logic path, very approachable, a lot of fun. Thank you. Proud to have solved it in 37 minutes.

[@jdyerjdyer]

Great puzzle! Super easy, super fun! Once I got the concept (which only took about 2 minutes), every number just kept falling into place. Only had two small moments towards the end where I had to play "bounce around the grid" using the palindromes and diagonals to eliminate a few possibilities in the corner boxes to get the few critical digits that burst the puzzle wide open to the finish line! Total time about 22 minutes!

[@davidhughes7174]

clever puzzle and most enjoyable to solve. Thank you.

[@sampathkumar-ej7xl]

Very enjoyable puzzle. Look forward to more from creators like you who design puzzles whose rules are simple, solution paths not obvious but not terribly hard.

[@TheGrandUser]

I think at 26:18 Simon got lucky with placing the 5 in r7c2 as by the pencil marks at that time it could have gone in r7c6

[@bhashim]

Exactly, I was wondering the same. I checked the comments for whom found it too

[@rasmeta]

Was thinking the very same thing. The Y-Wing spotted few moments later would resolve the puzzle in a slightly different path, if not for the lucky 5.

[@gonoszcerkof]

I got stuck on that very cell.

[@dudaseifert]

he was lucky, but not quite. there is a property of sudoku that if the givens are all symmetrical, then the sudoku is symmetrical, and 5 points to itself

[@dudaseifert]

apparently you can't use that unless you assume it has an unique solution

[@Numberplay]

26:14 Simon made a mistake here. Thankfully his mistake ended up puting a correct digit but he didn't see 5 could still go in column 6

[@avishevin1976]

Phew! I was afraid it was just me.

[@mirepoix4194]

I had to refresh the video at that point just to see if anybody had commented on this!

[@khayman9574]

I was going to point out the same thing. Simon: "Where does 5 go in row 7?" - Me: "Well, it could've gone in r7c6, couldn't it?" 😂

[@khayman9574]

@@mirepoix4194 I did the exact same thing

[@jekringstad]

Not thankfully though, I prefer it when wrong logic places a digit wrong, and they have to go back and do the logic right. The bent triple he discovers afterwards still allowed me to finish the puzzle without that 5, so I'm not upset.

[@HunterJE]

26:15 Am I missing something placing 5 in row 7 here? If pencil marks are to be believed it could still go in r7c6 here, and don't see anything in the grid at this point that rules it out. Did I miss something or did Simon just mis-scan and luck out that the unearned digit turned out to be right?

[@timothypickett9138]

Yes, it still had that option. Luckily, that didn’t give him much steam and he still needed to find the y-wing to solve the puzzle the rest of the way.

[@Mn0ty]

You're right. The solution I found from that point: -Either r7c3 or r9c1 is the secon purple on the diagonal. -If r7c3 is purple it's a 3 and r9c1 is a 2. -Now on box 9 only r7c9 can be a 2, therefore r3c9 is a 4. -But now r3c3 has no value because it sees 3 on r7c3 and a 4 on r3c9. -So r9c1 was the purple. From here, it is easy to solve.

[@AREmrys]

I think what we can use here is the logic of symmetry. The whole grid follows a strictly rotational symmetrical pattern, as there is nothing to break it. 5 as the digit in the centre has therefore to be placed in a rotational pattern around the centre, which forces it into the cell Simon placed it in and not into the other. But I doubt that that was his logic at that point.

[@KazimirQ7G]

I've paused and spent a few minutes trying to figure out what I was missing. Unable to find it, I got to the comments and was relieved I was not alone to spot that wizardry.

[@den41k2204]

@@Mn0ty got your explanation about r7c3 is 2, but it doesn't prove that r7c2 is 5

[@jinbe-san]

On your Simons, Get Set, Colour!

[@holdenc.1442]

I am almost never capable of solving a puzzle that appears on this channel, sometimes not even the GASes. I decided to give this one a go and solved it in 31:58! Super proud of myself for getting it at all, let alone anywhere near Simon’s time

[@gatlygat]

Good onya :)

[@kurodashinkei]

Well done!

[@jimhaney6384]

nice, thats pretty fast. took me a whole 43 minutes

[@inspiringsand123]

Rules: 01:55 Let's get cracking: 03:55 And how about this video's Simarkisms?! By sudoku: 9 (07:39, 13:38, 14:03, 14:13, 14:57, 15:35, 16:38, 28:51, 29:10) Lovely: 4 (06:38, 07:35, 17:09, 17:44) Good Grief: 2 (06:51, 25:46) Useless: 2 (11:44, 11:44) Sorry: 2 (11:46, 18:40) The Answer is: 2 (07:59, 13:28) Maverick: 2 (00:28, 00:28) Clever: 2 (29:35, 30:13) What on Earth: 1 (16:16) Naked Single: 1 (10:19) You Rotten Thing: 1 (18:24) In the Corner: 1 (24:17) I Have no Clue: 1 (13:30) Stuck: 1 (19:12) Astonishing: 1 (01:27) Deadly Pattern: 1 (29:20) Gorgeous: 1 (14:10) Come on Simon: 1 (11:53) Shouting: 1 (27:51) FAQ: Q1: How do you do this so fast? A1: I'm not made of flesh and blood, but of sand ... Q2: Why don't you include 'XX' and 'YY'? A2: Probably it's already on the list, but not mentioned in this video. But if you think it's not, tell me what you'd like me to include and there's a good chance I'll add it! Q3: You missed 'XX' at 'YY:ZZ'! A3: That could very well be the case! Human speech is hard to understand for computers like me, especially British sometimes! Point out the ones that I missed and maybe I'll learn!

[@radib9035]

Bro it has only been here for a minute…. What speed are you watching at? X100? Also, maybe add “we’re barking (?) up the wrong tree” 18:45

[@pekuja]

Rizky, I do believe Inspiring Sand is a bot. Quite fun though. :)

[@XxCrazZyNo0oBxX]

Of course: Should be on there he says that quite often even in that video xd

[@nightish_one6007]

Good bot

[@Xeractyll]

Don’t feel sorry when you don’t see something. We’re all human, and I can guarantee you’re seeing a lot more than most of us. Watched a few videos today and I adore this channel. Your voice and thinking process, even the keyboard clicks are all the more satisfying to listen to. Looking forward to more! Keep it up!

[@GabyGrecu]

You made my vacation nicer

[@Monolith-yb6yl]

26:13 why do you think there is only one place for 5 in row 7??

[@actionic135]

Yes, I think he got lucky there.

[@BanaiFeldstein]

This was a rare Simon puzzle that I could solve myself without watching the video, but I saw that move too. I got the same result but in a different way.

[@user-kt9vr1wj6y]

I have the same question.

[@jardelelias5625]

This was the first y-wing I spotted by myself. I was so proud. haha

[@Rubrickety]

Well, my solving skill has reached the point where I get stuck near the end and say to myself "I'll bet Simon spots a Y-wing at this point." Now I just have to advance to where I actually spot the damn Y-wing.

[@erinasnow]

On your "marks", shouldn't it be "on your simons"?

[@beyondcatastrophe_]

I actually played this a while ago, nice to see Simon playing some of the puzzles in the archive

[@davidhughes7174]

lovely puzzle, Thanks to pseudonym. Another beautiful solve Simon. Thank you.

[@zworqy]

You can use Phistomefel for a nicer finish. There's two 7s in the ring, and the only two possible places for 7s in the four 2x2 corners are those on the diagonals.

[@fresnik]

There are three 7s in the ring.

[@marilen8988]

My first solve under 30 minutes! I love this channel so much and always try to solve the puzzles that appear in the shorter videos, and today I finally managed to get a time shorter than the video!

[@th.nd.r]

What an INCREDIBLE spot on that y-wing. Well done there Simon, geez Louise

[@mackthisarrowhearth295]

This puzzle is incrediable symmetric, the coloring looks beautiful

[@theashen]

27:11 - Very nice puzzle! Loved it.

[@frankb7169]

18:43 "We are barking up the wrong tree..." In my solve I continued "barking" and found that 2 in box 1 could only go in c1 placing the 2 in box 7. (Note that the only other cell for 2 in box 1 at that point is r2c3 which would immediately break the puzzle in box 9, where 2 couldn't be placed)

[@Qril]

I found this puzzle surprisingly easy! 15 minutes to crack it. Recognizing that the four colours all saw each other to give the 3 and 4 was a pretty quick path to resolution.

[@dibenp]

Thanks. After listening to 7:00, I was looking for this comment. 👍

[@dibenp]

Ah. Simon sees it at 9:00. My mistake 😅

[@highpath4776]

Simon did not explain that first 3 very well , I went back and then understood it, but I dont think one needs the colouring to spot that as such - just simon avoiding pencil marking so we get colours

[@OlafDoschke]

The palindrome line from box 9 to box 6 also disambiguates the almost deadly pattern of 37s. Besides that in the first colouring stage to find the 10 pairs. When it's clear box 4 has purple, green, and orange, and box 6 has green, orange and blue, the blue pair must have the 6. Besides that, I'm pretty thankful to have learned about bent triples on the channel before and also found it.

[@victorfinberg8595]

27:05 "I've a feeling there's a Y-wing floating around somewhere." Use the force, Simon! Look at where your cursor is!

[@SnowTheJamMan]

Gonna give this one a shot, see ya when or if i solve it. EDIT: Solved it, took me an hour and 10, but i restarted twice after making some mistakes at the start so the real time is more around 1:30-1:40. Great opening section with some great logic but then i got stuck for about 30 minutes trying to spot something sudoku related, i ended up doing a complicated run to prove a square could only be 2 (i'm ashamed to say it was very close to bifurcation bu i still claim it was a logical deduction).

[@maxentius681]

I really enjoyed the symmetry of this puzzle, very approachable.

[@leojs5673]

What a great puzzle! Had a lot of fun with this one, and the pattern is so beautiful

[@brentsearles9510]

Cool puzzle and very satisfying solve as always!

[@theunwelcome]

I do see how it looks like a sushi roll, but it also sorta looks to me like a front view of a Porsche's "boxer" engine, with the pistons sticking out in four directions, and the "circling" palindrome lines being the motion lines for the fan at the front cool puzzle!

[@Tiger21us]

26:33 for me and flowed really nicely! Thank you~

[@bryanbousafi6423]

I get so triggered when simon solves very hard and logical puzzles but gets stuck to the easiest sudoku pencil marks tricks😂

[@hawser2088]

I have been learning some tricks from you. With the setup that was at 25:33 I was able to solve the 2's by stating the ring around the central cube has the same digits as the 2x2 squares in the corners. That forced the two into Column 3 Row 7. Thanks

[@nedb147]

Haha I immediately had the same reaction as Simon when I saw the 234 bent triple. Word for word. I've been here too long

[@robertshort9487]

This is the first puzzle on here I have ever been able to solve.

[@DyingFlutchman]

I tested this as well. Wonderful puzzle, glad to see it featured.

[@AnnaVahtera]

I have a suggestion for Sven for the software you use: Variant colors, ie. the ability to mark one cell "dark" (which would shade the color in it the same color, but a darker tint.) Would make coloring these kinds of puzzles WAY easier. You could still have a "green domino", but you could mark the other end "dark".

[@shaunday3749]

great video, great puzzle!

[@Jopal2222]

Just paid the $10 shipping fee for the CtC kickstarter book. Seems a bit expensive for delivery to London,UK. Love the CtC team and content though, and know they would try to get best value, so happy to give benefit of the doubt.

[@SunDry_Marchy]

Oh, that's vastly beautiful one. I had some trouble remembering the one in top line, then had a bit of fun coloring it in, and overral was nicely surprised with the symmetrical solutions

[@ddtalks2821]

(8:14) - Blue + Purple : In box 5, blue and purple cannot be in center square (R5C5) thus it must be 5 ( the only digit left from all 4 domino's (number used to make 10). Also, you can know that the corners are set by color (R4C6 = blue, R6C4 = Purple, while R5C4/6 are both blue and purple possibiilities)

[@mayhem661616]

I get frisky when I find a solution before Simon sees it.

[@SMTRodent]

I didn't get far with this one, but it is lovely! Thank you for making my day nicer.

[@danielcrump8254]

Managed to brute force this one almost entirely by accident after assuming that all the renban's had to be 6789 quads. That gut feeling was enough of a breakthrough to get me to the end in about 30 mins

[@balkthor]

Fun thing I noticed: Digits "opposite" each other in the grid are consecutive. For example, r1c2 is 7 and r9c8 is 6.

[@rizka7945]

Except the 5s.

[@bristolrovers27]

Lovely puzzle Simon forced to use sudoku, but he tackled it manfully.

[@escaperoomleander1948]

"When I heard he'd been colored, I didn't get upset. I didn't ask who gave the order. This is the business we're in. This kid was a visionary. He took a plain nine by nine grid, and using the Secret, he created Sudoku. And that kid's name was LOW GREEN!"

[@Stephen-Fox]

Some nice logic here. All the joy of a puzzle that requires colouring logic to break into it without the punishing feeling difficulty that often seems to go along with those. Very enjoyable. 25 minute solve for me.

[@CMLachky]

Great Puzzle!!

[@smelo44]

'Wake up Simon' that's what middle box 5 said using Simons voice.

[@stevieinselby]

Somehow completed this in 21m30s and beat Simon ... asking simple questions like "where does green go in box 2" seemed to help it progress. Also not spending too much time colouring in once the break-in had been achieved!

[@generalhotdog33]

Very fun puzzle! I would have no chance of even pencil marking this puzzle a year ago but now I find myself asking the same questions as Simon and actually solved this one slightly quicker (granted I didn't have an intro and didn't have to explain my reasoning to anyone). Now on to the arrow app

[@elmerdeleeuw1569]

The seeweeds.... Well, that would probably be Nori. Nori, I say. ;)

[@jinbe-san]

Tobiko (toe-bee-ko) is the little fish eggs you often see on sushi :)

[@JaborWithaY]

23:25 for me, got stumped on the start before I decided to colour the pairs but everything came together nicely once I did. Very fun puzzle.

[@HunterJE]

20:10 "It would be very interesting to know if [the blue in box 3] is the same as [the blue in box 1] but I don't think we know that" - we do if you look at the diagonal and the palindrome. Funny enough Simon then immediately jumps to the blues on the diagonal, but misses this piece (which would have helped down the line with placing 5s since it would force a 46 in r3c4)...

[@JonnyKaufmanTenor]

Seaweed, aka… NORI 😄

[@simenhalvorsen3825]

Simon was so proud of his y-wing that he forgot all about his coloring😂

[@derekfordyce9]

I finally, finally solved a recent puzzle. Also, it looks like I missed out on having my name in the Greatest Hits book... missed the Invite. Bummer.

[@haraldpuester6205]

You can find a sky scraper with 2 on cols 3 and 7 that will exclude 2 at r9c1 earlier in the flow. Makes the solution a little bit faster/easier, no bended triple necessary.

[@geoff544]

9:25 I think more work could be done with the coloured dominoes earlier on - like, 'where does the purple domino go in box 6?', and green in box 2, and so on.

[@istvanmagi473]

26:14: "Where does 5 go in row 7?" And he places it in R7C2, but at this stage it could go to column 6 as well. This looks like a nice fat bobbins to me. So how can the puzzle be solved logically? I could only do it by a nasty bifurcation that is way too long to see what it does exactly.

[@maxeverett5976]

I'm sure Simon would've loved the intended solution too :( there is a Y-wing using R3C3, R7C3, and either R3C9 or R7C9, which allows you to resolve the 24 pair in column 9.

[@maxeverett5976]

Ah nevermind, I see he still finds the Y-wing. I believe that ends up resolving the 5

[@michaeldevriese7969]

@@maxeverett5976 But the easier way would be to think where the 2 goes in box 1.

[@tehjoch]

I think this is the clearest I've ever heard "Y wing" explained

[@epsilonisevil1988]

52:05 for me. Took about 10 minutes to get the 7 in R4C3, then got stuck at the end before finding that R3C3 is always a 4 based on the 37 pair in R8C8. Fun puzzle!

[@DWestheim]

As far as treacherously easy starts and the size of the following "???" shooting out of my ears go, this puzzle is a 10! ... solved it, though, in 57 minutes.

[@srwapo]

28:02, found the opening pretty easy, some of the triples and unraveling the end were tricky having to jump around the board with the restrictive diagonals.

[@allenfortenberry9924]

One thing I noticed at 12:33 is that orange has to be 1/9 because if it is 2/8 then there is no spot in box 2 where one can go

[@davidh.4944]

67:43. My solve path was fairly similar to Simon, but I switched over to single-digit coloring halfway through, and I resolved the final conflict slightly differently. It was a nice little challenge, and not too brutal, once I figured out how all the initial interactions worked.

[@coffeefiend5913]

Placed 5 for row 7 in box 7 when it could also go in box 8. Lucky oversight.

[@randomcubing7106]

I started watching CTC in the ages of thermo sudokus then chess sudokus, where the “miracle sudoku” truly fascinated me then we have the “hardest sudoku variant” Skyscraper, and x sums Kropki and XV are absolute classic And boom here comes the Ring And then Set theory really pushed the boundaries of being the real boss of sudokus. After all these years Arrow sudoku are the hardest

[@Tfin]

Remarkably easy, I solved this as fast as any of the GAS puzzles from Mark's video on those before this. (I did fairly poorly on them!) 29:24, starting by noting that the 7 and 6 had to be the ones to oppose each other in column 5's X-sums.

[@stewste4316]

Good one

[@VeritasUnae]

Gave a go at this one, manage it in just over 32 minutes - I completely missed a 4 in column 9 that was finishing my whole puzzle for me! Haha.

[@francescopetracca374]

62:16 It's approachable...ish, dunno, I feel it was on the harder side of approachable, if that make sense (for a beginner). Still very, very good and quite enjoyable ( and colorful 😆) Ok, looking at Simon solving it, maybe I faced it in the wrong way (I focused on single cell instead of "pairs")... well, I'll do better next time 😅

[@PaulVictorey]

At around 24:00 when you're looking for things to do - you can actually fill in every 2 in the grid. 2s are restricted to one of two places in boxes 3, 7, and 9, and they all interact so there's really only two permutations for 2s. One of the two possible patterns (with 2s in R9C1, R7C9, and R2C7) leaves you with zero valid spots to place a 2 in box 1, so that isn't correct.

[@nickthompson1812]

Ready... Steady…!

[@RollcageTV]

Small (irrelevant) point, but since the sudoku coordinate system counts *down* along the y-axis (row 1 at top, etc), the slope of the "backslash" diagonal would actually be *positive*, not negative 😜.

[@Poet13xRatedRKO]

26:09 here. I found this pretty easy except spotting the Y-wing (or whatever it's called) at the end (see 27:30 in this video).

[@asterpw]

29:49.... omg first time I ever beat the video length! That's been my goal for months!

[@_-_-Sipita-_-_]

16:13 for me, another good time

[@evanbasnaw]

Simon missed a chance whole describing the seaweed roll to mention NORI ! NoriNori

[@austinstanley1911]

I'm quite proud of myself tonight, it's nearly 3 a.m. and this is the closest my time has ever been to Simon's on a Sudoku, only taking 5 to 10 minutes longer! Usually I'm at least double.

[@rok123451]

solved in 40:25 minutes. Was a realy enjoyable puzzle.

[@amoswittenbergsmusings]

27:58 for me. I got the break-in almost immediately but it was of course totally telegraphed. I continued with domino sudoku which Simon seems to have missed. A domino can be placed in boxes 2 and 8 by sudoku which then disambiguates the 12/89 dominoes because of the given 1. I pencil-marked the diagonals early on which was very helpful. I never needed the Y-wing. Rather proud of myself. I think my solve was significantly more efficient than Simon's. I learned such a heap of tools on CtC...

[@amoswittenbergsmusings]

@@paulinnanjing I don't think so. I'll try to rewalk the path and check. Don't hold your breath though.

[@danieltaber4924]

At 23ish, I really hope he notices that r5c6 is the same digit as r4c1, r2c2, and r1c9, because they all see r4c6 (or are a palindrome from it), and that therefore that digit is also r3c4.

[@SailSmBi]

I was stuck at the same place Simon was at 26:18 and discovered the only thing I need to do was ignore that 5 can go in r7c6.

[@wanderlustwarrior]

31:55 That was an okay time for me. hopefully I'm not slipping or being careless as much anymore.

[@kempisthomasa7311]

This is the first time I’ve ever said “there must be a Y-wing” and then actually found it.

[@tarotcomPauloEvoLua]

I just didn't get how Simon realized the 7th box's 5 was in the row 7, but the solving was marvelous as always

[@alarictaqiarentza9451]

14:30 solved for me. For this kind of puzzle I think it easier to just remove the color when its no longer needed. No Y-Wing needed I think. 2 in Row 3 can only be in R7C3.

[@alarictaqiarentza9451]

But that's probably because of Simon mistake, the way I solved it is removing 2 from R3C1, because there will be no place for 2 in one of the other box.

[@sacredsock8031]

10:42 i'm pretty sure there is a rule about the centre square, and it's usefulness (or not)

[@jesperwillems_]

Got a 15:50 on this one, quite surprised I managed to do it within that time, as I normally take as long as Simon if not double his time. Wonderfully joyful puzzle!

[@srwapo]

I'm in the same boat, feeling lucky if I'm within 5 minutes of the video length, but sometimes a puzzle just clicks and I power through wondering what the hold up was.

[@pekuja]

26:15 I don't understand how Simon deduced the 5 in r7c2. Couldn't the 5 go in r7c6 just as well?

[@pouletbelette]

Simon made a mistake. Luckily with no consequence.

[@23steveevets32]

fun!!

[@DarrenNakamura]

Was cruising along for a while then got stuck until I found a bent triple to finish off the puzzle at 56:01.

[@Archik4]

I was waiting for a different ending, I wanted to see how he unravels the last numbers. But it turned out that he put the top five on good luck. At the end I also put one number to guess, the puzzle did not come together and then I put another one.

[@Gonzalo_Garcia_]

20:08 for me. That was fun!! These colour puzzles might sometimes feel similar one to another, but still they never get boring.

[@LednacekZ]

27:08 today. Could have been much faster, but I am awful at spotting all those hidden XYZ wings and fishes. And of course once i managed to find the final break in the puzzle, O wrote the wrong number in. That alone cost me 2 minutes. The puzzle itself is nice. I enjoyed the solve

[@57thorns]

34 minutes for me. a very good time given I was somewhat distracted by an online discussion.

[@Coyotek4]

25:03 ... funny thing was, I *knew* the solution about 5 minutes before I actually figured it out, as I saw fairly early on that the solution had 180-degree symmetry; *this* time, I wanted to find a logical path that didn't use that; I was able to find such a path, though some moments were more chain-y that I would like. Fun puzzle!

[@Pyromonkey83]

I am such an idiot. I spent like 40 minute playing with colors trying to figure out how I could POSSIBLY disambiguate any of them as 1/2/3/4 or 6/7/8/9 and thinking the puzzle had a myriad of solutions. I pressed play on the video to see how the 1 disambiguated the colors in a way I couldnt find, and immediately saw Simon put the 123 into the 6 cage, and then I realized I didn't realize there were cage totals, because my coloring had covered them up. It solved within about 5 minutes after that fact. *sigh*