The Very Naughty Dominoes

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** TODAY'S PUZZLE **
Wow! Emphyrio's Safe Distances - a puzzle with four 9 cages - is pure magic. It's amazing how much work naughty dominoes (and their avoidance) can do!!
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Rules:
Normal sudoku rules apply. Digits in a cage must sum to the small clue in the top left corner of the cage. The clue outside the grid gives the sum of the digits along the indicated diagonal. Digits in orthogonally adjacent cells cannot sum to 3,4 or 5. In addition, 1 and 9 cannot be orthogonally adjacent, neither can 2 and 8, nor 3 and 7.
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Опубликовано:

19 фев 2023

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Комментарии : 124

@Plinky432 Год назад

I love the fact that despite not appearing in the rules 4 never appears next to 6 either.

@Posiadam. Год назад

I suppose it’s the fact that it would create a negative constraint which probably would give an answer quicker.

@Shlefter Год назад

I wouldn't be surprised if that was a rule originally and was removed to make the puzzle harder

@petemagnuson7357 Год назад

I'm guessing it was removed to avoid distracting you into focusing on the given 4s. The only real power it would have had is breaking the 5vs6 symmetry, but there aren't any 45 dominos either. It's more elegant without a basically unused rule imo

@emphyriohazzl1510 Год назад

@@petemagnuson7357 yes, I started setting with just the sum to 3/4/5 rule (and with a quite different setup with just cages and no givens, this version with the two given 4 and the LK appeared much later when I had already fully decided on the rules). I considered indeed adding the sum to 10 exclusion to make the rules simpler but went with this weirder but less restrictive statement to keep the post break in solve path a bit tighter.

@Paolo_De_Leva Год назад

@@emphyriohazzl1510 That was a good call, in my opinion. Since the very beginning, it can be understood that the weird statements are all related to the 1-2-3 "pairs" in the cages.

@emphyriohazzl1510 Год назад

Thanks a lot for the feature! I didn't expect it to be featured so quickly :). Brilliant solve as usual from Simon, perfectly as intended and I really enjoyed a lot watching it! :) Sorry that the break in is a bit tricky :). I found out later that there is another way to think about how to rule out the wrong placement for the "123" on Phisto ring by considering where the last 123 can go in boxes 2,4,6,8 and using something a bit similar to Thor's Hammer logic, but in essence it's more or less the same. It's also worth noticing that the final grid verifies complete orthogonally adjacent entropy (123 are never orthogonally adjacent to each other, neither are 456, nor 789). It's not a direct consequence of the weird ruleset, which is a bit less restrictive, but if I remember correctly it becomes true if there is a GSP setup (which is the case here with the symetry along the positive diagonal, 1,4,9 matching themselves and 56/23/78 matching each other).

@chironchangnoi Год назад

Thank you for this wonderful puzzle! I even understood about 1/4 of what you said before 🤯

@davidrattner9 Год назад

Just absolutely sublime setting from you!! Loved how all this came together!!

@gerdkah6064 Год назад

since 4 and 6 dont be adjacent anywhere in the solution, why not just say _"no domino can sum to 10"_ in the rules? would that have made it too easy? thanks for a great puzzle ^v^

@petemagnuson7357 Год назад

@@gerdkah6064 the rules would have looked nicer, but that could distract solvers into pencil marking 6 based on the given 4s. A little more elegant this way imo

@emphyriohazzl1510 Год назад

@@gerdkah6064 would have made rules simpler but more restrictive hurting a bit the solve path.

@ShadowBeatzInc Год назад

This man really just, without a break in thought or face, said "we a get a triple in one direction. This is a sort of 'harry styles' type triple is it?" and just went about his business. Iconic.

@ragabulle Год назад

I immediately went to the comments to look for answers about the Harry Styles comment. Didn't catch on that he was in the band One Dorection. Thanks!

@ohwell225 Год назад

@@ragabulle I knew he was in the band and still didn't get that hint because I never listened to their music, before or after the dissolution of the band lol

@thechallenger979 Год назад

a true legend

@ShakalDraconis Год назад

The start of the video had me remembering Gregg and Angus from Night in the Woods. May - "I hadn't pegged you as a party person." Angus - "I'm not really, but parties with Gregg are different." May - "How so?" Angus - "You know how you just want to go and stand in a corner sometimes?" May - "Yeah." Angus - "Gregg's my corner." May - "Awww."

@clairerothero724 Год назад

I love this channel and the people around it 😊

@agingersaurusrex3031 Год назад

Imagine Simon realizing that there is no 3 in corner and go, “nope. I’m done with this puzzle.” And shut off the video lmao

@radicalpaddyo Год назад

I am just imagining in 30 years time, setting the grandkids down on the rug, as I sit in my lofty armchair, beard white as snow and a twinkle in my eye: "And now my dears, I will tell you the tale of Simon, and his Scrabble bags..."

@Urutsini Год назад

That is the most elegant puzzle and elegant solve I've seen so far. Congratulations Emphyrio and Simon.

@TheGerkuman Год назад

Naughty Domino is the Genesis song we never got, but should have.

@stangerrits6712 Год назад

Why not shade the 7-8s with the same colours as their 2-3 counterparts? Makes it much better to understand imo, and it helps to limit the number of used colours, so Simon can limit himself to the colours he actually likes 😊

@btestware Год назад

Why shade at all? The yellow and orange aren't doing any good, so the 8-2 pairs and 7-3 pairs could be solid green and purple. Simon is a genius but he keeps his colors far too long.

@bevobexley4087 Год назад

I love your different ways to explain Phistomofel's ring. I think I've seen 4 or 5 variations on your explanation which really drives it home. There are probably a few other ways to do it using sets and I appreciate the variety in sets that you use in explaining.

@GTI-Eddy Год назад

Fascinates me that people can actually work out this type of puzzle, and someone starting from scratch setting a puzzle like this with specific rule sets just blows my mind. I like doing some of the CTC puzzles but one like this is beyond my capabilities, I simply can't think of that many things at once lol. (Experienced puzzlers may not seem to agree that there is a lot going on at once, but for inexperienced people like me, there is too many numbers and positions flying all over my mind)

@davidrattner9 Год назад

Another wonderful solve and puzzle on this Monday! Scrabble bags a constant joy to see when you bring them out and use!!

@KANPAI666OPPAI Год назад

56:24 for for me. Wasn't expecting it to be a 123/456/789 turning into a sort of modular 149/258/367 solve. Additionally, finally understanding Phistomefel Rings really helped with positioning everything thanks to the given 4's. All in all, really clever setup!

@oneinemilyon2481 Год назад

Great video. I got my mum to watch CTC with me, and now she can't stop saying "bobbins". Is there a cure?

@monicariess2495 Год назад

It makes me smile everytime Simon says "naughty dominoes"

@inspiringsand123 Год назад

Rules: 04:23 Let's Get Cracking: 06:12 Simon's time: 50m16s Puzzle Solved: 56:28 What about this video's Top Tier Simarkisms?! Phistomefel: 3x (17:56, 32:16, 56:44) Bobbins: 1x (40:35) Three In the Corner: 1x (08:05) Scooby-Doo: 1x (26:29) And how about this video's Simarkisms?! Naughty: 19x (28:38, 29:03, 33:44, 36:53, 37:37, 37:47, 37:49, 38:28, 39:44, 39:47, 39:58, 40:02, 46:41, 48:18, 48:46, 48:49, 55:22, 57:02, 58:07) By Sudoku: 13x (24:38, 24:46, 31:11, 34:54, 36:48, 37:28, 38:22, 39:40, 43:22, 51:29, 54:11, 54:29, 56:02) Hang On: 11x (02:53, 27:40, 27:40, 29:42, 42:03, 51:20, 51:20, 51:20, 51:20) Ah: 11x (27:55, 29:42, 35:15, 38:39, 41:09, 44:12, 44:36, 44:36, 46:09, 51:20, 55:00) Sorry: 6x (02:05, 21:19, 23:52, 26:16, 26:16, 35:45) Clever: 5x (25:32, 50:12, 56:50, 57:23, 58:15) Symmetry: 5x (29:50, 29:53, 35:52, 35:55, 38:02) Lovely: 4x (03:31, 03:49, 03:49, 04:07) Beautiful: 4x (01:41, 44:16, 56:55, 57:58) Scrabble Tiles: 4x (13:58, 14:00, 14:07, 15:11) Brilliant: 3x (34:50, 56:31, 56:34) Obviously: 3x (11:03, 13:23, 19:43) Wow: 3x (27:48, 27:48, 37:41) Take a Bow: 2x (58:19, 58:23) Proof: 2x (16:54, 17:08) What on Earth: 1x (08:19) Useless: 1x (06:23) The Answer is: 1x (14:36) Out of Nowhere: 1x (38:35) Elegant: 1x (44:18) Shouting: 1x (01:47) I've Got It!: 1x (34:10) In Fact: 1x (50:07) Progress: 1x (25:30) Fabulous: 1x (56:58) That's Huge: 1x (37:50) Pencil Mark/mark: 1x (33:03) Most popular number(>9), digit and colour this video: Ten (9 mentions) One (119 mentions) Purple (34 mentions) Antithesis Battles: Low (27) - High (0) Even (4) - Odd (3) Row (5) - Column (5) 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!

@debblez Год назад

Fun fact: The finished grid for this puzzle is the most symmetrical type of sudoku grid, i.e. it is mathematically equivalent to the canonical grid.

@jakubt8701 Год назад

What do you mean by "most symetrical"?

@debblez Год назад

@@jakubt8701 I mean that it is mathematically equivalent to the canonical grid, which has more symmetries than any other mathematically distinct grid.

@snjyjn Год назад

Amazing! According to the setter, the grid has complete orthogonally adjacent entropy (i.e. 123 / 456 / 789 do not touch each other), is symmetric around the positive diagonal (with 1,4,9 matching themselves and 56/23/78 matching each other). I also notice that there is roping going on (all row / box combinations are 157 / 348 / 269, and col/box combinations are 168 / 247 / 359)

@l3igl2eaper Год назад

Took me 29 minutes. It turned into a coloring puzzle halfway through, very cool.

@emilywilliams3237 Год назад

When I saw the puzzle and the ruleset I kind of had the feeling that I could do this one. But then you said that you thought it was difficult ... hmm. I may have to give it a try with the video close at hand! Thanks to Mark for suggesting it, and to you for solving it, Simon - very enjoyable video!

@yichen6313 Год назад

Wow! What a puzzle! It is tough and seems hopeless but you keep going anyways, and it keeps challenging you with unexpected logic. From Phistomefel ring to ring parity to filling in all the 1 (and 49) to 23-78 coloring for the diagonal 28 clue. It’s really packed with logic. I enjoyed this a lot!

@mute1085 Год назад

Personally, I found the non-Phistomefel ring break-in quite elegant as well. There are only 2 possible arrangements of the remaining lower digit in the boxes 1,3,7,9: if one is in a inner corner, it forces all in the inner corner. And if they all aren't in the corners, lower digits in b2468 get forced in both inner corners, while forming double x-wings and forcing a lower digit in the centre of the box 5, making it impossible to place the remaining 2 lower digits.

@Megatron9000 Год назад

Very cool. I was hoping someone would mention alternative break ins in the comments lol. I knew what they found would be something interesting!

@johabee Год назад

How would one know that the inner corners of boxes 2 etc. form x-wings? Does not seem trivial to me that these corners all contain the same 2 digits, could be a mix of 1s 2s and 3s. Can you enlighten me?

@DeadBore Год назад

Just like to say tysm for over-explaining everything, I’m sure a lot of your viewers understand everything without it, but it’s very helpful for dumbasses such as myself to have that safety net ❤

@glrider100 Год назад

I'm proud of myself on this one.. while I didn't solve it on my own, I only needed 2 or 3 hints from Simon, which is a personal best. As I went along, multiple times I thought this puzzle had multiple solutions, but it was the bad dominos that avoided that. I'm proud I actually recognized that one as well.

@markbennet9058 Год назад

What I really love abut this puzzle, and I think it is way ahead of anything else I have seen in this respect, is the way that the unfolding logic happens through particular digits, pairs or triples (triples at first, pairs and digits later). It is not ever really about regions of the grid (OK the break in involves box 5 and the pivotal role of box 5 is there in every phase on reflection - that in itself is notable). Perhaps "The Miracle Sudoku" does this in a way, but this puzzle exploits this particular aspect more subtly. At each stage you have to focus on the right digits, and that sustains the logic from the break-in through the solve. And it is the way that this logic is sustained which makes this puzzle one of my all-time favourites.

@erickheda7852 Год назад

Naughty Dominoes by Harry Styles (feat. Simon Anthony on guitar) is the new song I never knew I needed.

@changjsc Год назад

This was a pure pleasure to watch

@brenthoskisson6979 Год назад

I am curious to know why 4 / 6 pairs were not included in the rules, since there are no 4/6 pairs in the final grid. Was it simply to make it more difficult?

@victoriam6569 Год назад

Thank you for the fun!

@jakubt8701 Год назад

Fascinating how Simon makes everything two times, forgoting that its all symetric by positive diagonal :)

@piarittersporn Год назад

Wonderful puzzle.

@matthewlove4082 Год назад

For a fraction of a second I thought a 'Harry Styles triple' was an actual thing in Sudoku terminology, and then I realized...

@steelfabric Год назад

Once Simon added the green flash to one of the 123's and then chased that around the grid, it is a simple matter of adding a flash to one of the other 123's and chasing it around the grid, and you end up will all of the 9 cages being the same, thus showing that the yellow cells are not where the 123's go.

@4quickben4 Год назад

Shouting at the screen when looking at "red" 78 in column 1 and Simon decides to go clockwise around the boxes!

@EtoGmajor Год назад

30:16 for me. I usually hate phisto ring puzzles. I saw that it was probably important. Then I saw how many 123s there were in the corner squares and how they couldn't touch within the ring. Very neat puzzle, and I felt like I could guess where the setter wanted me to look next.

@andremouss2536 Год назад

What a sensational exploitation of a clever ruleset. And that trick around Phistomefel's ring is one of the prettiest ones ever seen - and funny as well. Congrats to both the setter and the solver !

@MadScientist212 Год назад

A really amazing and clever puzzle, I got stuck for a long time trying to figure out which way the pattern on the ring went but eventually found a way. My method was using similar but slightly different logic to Simon's. If yellow was low, then the final orange digits in the phistomefel corner boxes (r2c2, r2c8, r8c2, and r8c8) would be touching a 123 triple no matter how yellow was positioned. Thus they could only be 5 or 6, because every other digit would break one of the keepaway rules (IE a 9 or 4 next to a 1, an 8 next to a 2, etc) and/or be a repeat in the box. This would mean that the blue digits on the ring would now all be from the digits 456 via phistomefel, and with the given 4s we'd have 56 pairs looking into the central cell of box 5. Now, for the same reason Simon said, we couldn't make that cell a 123, and thus would have to position the 123s in the box around it in some fashion. This would also stop it from being 789 because of the keepaway rules. It could never be a 4 because of the given 4s (and now it would be touching a 1 too). And the 56 pairs we just got in the ring remove the last possible values for it. Ergo, the puzzle would be broken with that arrangement on the ring.

@Ranger0333 Год назад

1, 4, 9 up the diagonal was interesting!

@Megatron9000 Год назад

Interesting to see every row and column is "stripey"! Are you guys done posting "miracle" style sudokus now? This one was close to the concept.l

@Coyotek4 Год назад

Today was a brutal solve day for me, as both puzzles took me over an hour and this one in particular took me nearly an hour and a half (1:27:52); all things considered, I'm just happy to have made it through. Tough puzzle (for me, anyway)!

@markbennet9058 Год назад

I think Simon got the intended break-in spot on. I certainly didn't find an easier way. It is apparently possible to do it without Phistomefel but using similar logic - Phistomefel highlights the key squares a bit more clearly, but if you are looking at those squares anyway (by solver's intuition) you can get the same deduction. And what a stunningly clear solve of a tricky puzzle. It astonishes me how quickly Simon knows where to look.

@jlestinajr Год назад

I love your videos, and I watch one most evenings. I wonder if there’s been any consideration of a “dark mode” instead of the large white, bright grid? I can’t be the only one who would appreciate it.

@cathybryant5119 Год назад

There actually is a dark mode. If you go to settings, pick the "Experimental" drop down, then set "Dark Mode Alpha" to "On". Given that is it says "alpha" and is in "experimental" mode, there might be a few bugs, so be warned.

@Squishy3757 Год назад

32:35. I think you need to consider what can be in the 4th of each of the corners and use the remaining rules to eliminate digits.

@Rach881101 Год назад

55:28 for me. Brilliant puzzle!

@Praetarius Год назад

I don't see any 4s adjacent to a 6 in the finished grid, so the second half of the rule set could've been condensed to: adjacent cells must not sum to 3,4,5 or 10.

@emphyriohazzl1510 Год назад

As it wasn't needed I preferred to stay as little restrictive as possible (knowing 6 isn't next to 4 would have allowed to place all the 56 faster) even though it would have made the rules simpler (I hesitated a little between the two statements though, and also between two versions of the puzzle).

@ellaenchanted2399 Год назад

Happy to get here early-ish. Phistomofel ring fun!

@Zakatan_tan_tan Год назад

you should add a "skip phistomephel ring explaination" button :D

@brettaspivey Год назад

That's a 10/10 for beauty

@dannstarrjp Год назад

I found the break in quicker than Simon but I really got stuck when I had to figure out if the 28 little killer had double 2 or double 3. Unfortunately didn’t find the beautiful logic that Simon did, bifurcated a bit to see that one option breaks the puzzle😢 still it’s probably my first phistomephel ring puzzle I’ve solved by myself, pretty happy with at least spotting the break in early on

@lunardancer6047 Год назад

Another way of thinking about how the blues had to be low was that if they were high, their only options were 5 and 6 given those became the only options via Phistomefel and other shenanigans, and then the ring couldn't be completed as you can't fill three cells with just 5 and 6. Therefore the blue cells had to be the low digits.

@pialba Год назад

Actually, the corners can be 4 so if the yellows are low the blue digits can actually be 456, which doesn't immediately lead to a contradiction. However, notice r5c5 also is next to all low digits and therefore must be 5 or 6, which puts too many digits from 456 on row 5 thanks to the given digit.

@emphyriohazzl1510 Год назад

I think you might have missed that r2c2/r2c8/r8c2/r8c8 could also be 4 (for r2c8),7,8 or 9 and are part of the set equivalence, allowing to place these high digits as well in the ring?

@pialba Год назад

@@emphyriohazzl1510 This is not possible because these digits are orthogonally adjacent to 1, 2 and 3 in this case.

@emphyriohazzl1510 Год назад

@@pialba oh wasn't awaken, yep of course the 123 triplets in that case prevent them from being from 4789. But as pointed out 2 corners can be 4 which is enough to place them all on the ring I think? Going to check on an actual sudoku grid instead of in my head though :)

@emphyriohazzl1510 Год назад

@@pialba actually it does allow an alternative break in : in box 5 r5c5 has to be orthogonally adjacent to a 123 triplet and it sees a 56 pair horizontally and vertically (r5c37 are from 56 and r37c5 too), so it can't be anything :). Cute alternative break in, good spot @LunarDancer! :)

@SneakyFatKid7 Год назад

Would it make sense for the tiles in the scrabble bags to have the names of the cells (example: r3c1, r3c2, r3,c3, etc) instead of the digits? Then when dealing with a cell that is both colors it involves removing the cell with that name from both bags (r4c2 in Simon's example).

@jonniboye6399 Год назад

For the first half of the video I made all the same deductions, but I got stuck on the "pinwheel" logic at the end. Sometimes it really does help to write it all out to see things clearly.

@Gonzalo_Garcia_ Год назад

28:55 for me. I solved it without the Phisto ring, but it took a little bit of trial and error at the beginning. Very impressive puzzle!

@wanderlustwarrior Год назад

I spent about 45 minutes on it before I decided I couldn't get any further on my own. I then checked the video, realized I'd improperly ruled out 126 as a possibility for a 9, and also needed help getting started on the set. After that, I cleared the puzzle and it still took me 39:06. ...I'm really not good at SET puzzles.

@FryGuy1013 Год назад

I feel a bit frustrated as I saw the very obvious hints towards the Phistomophel ring and decided "naw, it's got nothing to do with that" and spend 20 minutes looking for something else. My break-in was slightly different though. The other spacing of 123 in the even spaces forced 56 in the center positions of boxes 1379 since 123 are eliminated from the outer edges, and 789 forces its partner 123 in the inner corner which is impossible given the original. Then that forces 4s in opposite corners which gives an impossible coloring of the remaining 56s. Yours was cleaner though.

@brendanedmonds Год назад

Anyone notice the symmetry around the positive diagonal from bottom left to top right?

@srwapo Год назад

65:04, I saw the ring, but not how to figure out which of the two options I could use for the location of the 123 cells. I had to watch the solve after half an hour to get over that hump.

@markbennet9058 Год назад

Absolutely love this puzzle

@soremekun Год назад

You should make a RU-vid Short for the Phistomofel theorem and link to it when needed in videos.

@debrawilden1971 Год назад

YES!!!! I've been mentioning this quite a # of xs! Only it can't be a short. But he should make one to attach!! Otherwise, I just fast-forward.

@Anne_Mahoney Год назад

Actually Simon did make a short for that, and for a few other basic concepts -- there are about 4 of them.

@debrawilden1971 Год назад

@@Anne_Mahoney Yes, thanks, right. I do recall that. But I think it would be good to link them in the comment field for those puzzles where he decides to explain them, then he wouldn't need to keep explaining, because that is a long one.

@andrewnicholson3810 Год назад

somehow I got this without thinking about the PR at all, by focusing on placement of low digits and figuring that the inside corner cell of b1,3,7,and9 had to be low...but maybe I got lucky with a false assumption or something

@th.nd.r Год назад

Wonderful setting and solving!! I am astonished at how so many of these digits just get solved all at once, like all the 9s at once etc. Beautiful! Favorite quote from today’s video: - “So it creates a triple in One Direction. Is this a sort of Harry Styles-type triple is it?”

@abigailmccracken1234 Год назад

Simon: "is it going to be nines next? no it's definitely not going to be nines next" *me doing nines next*

@alienrenders Год назад

15:24 is my time. Had to colour the 5678's to find where the 78's were. And the diagonal then solved the rest. Took more than 10 minutes because I was slow at coloring the 78s.

@trainsinpoland Год назад

I don't follow the logic at 27:10. Why are r9c2 and r8c9 the same digit? If you put r8c1 =1, r9c1 =6, r9c2=2, and r9c8=1, r9c9=5, R8c9=3, the "9" boxes are correct, I have obeyed the rules but r9c2 and r8c9 are not the same. Maybe somebody can enlighten me and show me where I am wrong.

@trainsinpoland Год назад

Sorry I forgot he was hypothesising, now I know, I should be patient

@mnnvikes101 Год назад

@@trainsinpoland I think his logic for saying those numbers were the same was wrong as well, if deduced in the order he clicked. But if you started r9c2 you can see r2c1 is the same because that digit in c3 needs to be in box 4. Follow that logic around and you get all the same cells being the same as he did.

@RichSmith77 Год назад

@@mnnvikes101 His logic was correct. He went back and explained his reasoning in greater detail from 31:50. (Where can r9c2 go in row 8...)

@annaherbst8670 Год назад

Where is timestamp bot when you need them :(

Год назад

Interesting that there are no 4-6 dominos either.

@grimanium Год назад

The sudoku app is bugged out :,(

@_-_-Sipita-_-_ Год назад

31:50 for me. had to check on the (spoiler) phisto ring...

@Baritocity Год назад

I spent a good while circling around the answer to the break-in, but I got the puzzle about the length of the video. Arranging the high digits was more straightforward.

@4thright Год назад

Scrabble bags, plus getting my name read out. Could it get any better than this?

@highpath4776 Год назад

coventry blue a new colour ?

@myfyrmadocjones Год назад

Return of the Speckled Band? I don’t believe it.

@markbennet9058 Год назад

Why not use the same colour for linked digits (eg no purple next to purple)? When I have linked digits in colouring I generally try to tie them together in some way. Just a way I found to make the grid rather less busy when I solved this one - in case it helps anyone out there.

@JamieDenAdel Год назад

I initially thought the same thing, but by making the first 7/8 red, for example, it's easier to see the sudoku, versus trying to ignore the partially purple 2/3s, if 7/8 also had purple in it. Also, I think the flashing can confusingly flip directions with different combinations, always putting the lowest number-keyed color on top.

@markbennet9058 Год назад

@@JamieDenAdel I am colour-blind, and busy grids don't work for me. I suggested it because it might help some people. I sometimes use lettering with AI, BH, CG, DF pairs and E as the unpaired digit. I might use the same colour flash for related digits against a high low (or odd/even) background. I agree that spotting Sudoku is a key thing. Go with what works for you.

@robertcousins2274 Год назад

26:28

@awilliams1701 Год назад

The rules could have been 3,4,5, 10 since 4/6 were never a pair. lol

@grithog5399 Год назад

Brilliant puzzle, so much fun to solve!

@pairot01 Год назад

Too many colors are making you confused. Blue and yellow should have been merged back to orange once you figured out the parity. Green and purple were clearer without a second colour, you already know they are the nine 2s and nine 3s.

@OtterCid Год назад

37:26 I had a bit of a giggle when simon says "I can put a 4 based on sudoku.. well kinda sudoku.. 1 can't go next to 4.." .. no simon.. not kinda sudoku. entirely sudoku. there's a 4 in the top right corner seeing that spot as well hahaha never fails to make me laugh when the obvious answer is the one overlooked

@OtterCid Год назад

5:52 another little sudoku deduction went missing here. simon says "red goes in one of these 3 positions", but it is actually only possible to be in 2 positions as well, because in box 2 red is 100% in c6, so red in box 8 can not go in c6 as well :)

@OtterCid Год назад

what a spectacular way of solving the 7/8s just by putting a grey next to a 2/3 into the 28 diagonal! Loved this puzzle and how simon solved it

@martingriff101 Год назад

simon wanted to be a painter in a younger life

@TheProfanat Год назад

Why does Simon always forget about symmetry?

@peterhowitt3861 Год назад

I wish you had explained why the green digit had to go in the middle square at 27.39. You are normally so much better at explaining logical decisions. I could not see why this should be the case but you just moved on. I couldn't even see that the greens in boxes 1,3,7 and 9 had to be the same in truth.

@jsizzle911 Год назад

I must be honest, this is not an enjoyable rule set for me. Nothing against Simon.

@istvanmagi473 Год назад

It is very weird that Simon explains what "orthogonally" means, but does not explain "normal sudoku rules". The other way round would be much more logical.

@edwurtle Год назад

Please delete colors when they are no longer useful. The orange, blue, and yellow colors were useless half way through the puzzle.

@RichSmith77 Год назад

It also answers his question at 42:00, about restricted 9s in box 2 Q: "How can I not see that?" A: Because you leave colours in the grid that are nothing but a distraction.

@RichSmith77 Год назад

It would have also meant he didn't have flashed colours at the end, and could have had that satisfying feeling of double clicking a solid colour to enter all the 2s, 3s, 7s and 8s. 🙂