Use Cluedoku Skills to Find the Killer!

Here's where you can try Pseudo Cluedo by Marty Sears: sudokupad.app/el9sus7p0o
A murder has been committed in Grid Mansion! Dr Awkward has been found dead, and there are six suspects. Can you work out who did it? Normal sudoku rules apply: place the digits 1-9 once each in every row, column, and 3x3 room.
FIND YOUR PATH:
• Draw a line passing through the centres of some cells to represent your journey from room to room, as you interrogate suspects and look for clues.
• Your path must start at one of the lettered cells (these are initials labelling the six suspects and the victim.) The path must finish at another lettered cell, and visit all the other lettered cells along the way.
• Your path may move orthogonally or diagonally between cells, but may not cross itself.
• You may not pass through a thick black wall; you can only get from room to room by travelling through the CENTRE of a doorway. For some doorways this may mean you have to go through diagonally.
• The value of digits along your path must constantly increase or stay the same (like a slow thermometer). You must never move from a higher value to a lower value.
PSEUDO CELLS:
• Every row, column and room has exactly one 'pseudo cell'. These 9 pseudo cells contain the digits 1-9 once each.• For the purposes of your path, and for the weapon, victim and suspect rules below, the value of a pseudo cell equals its room number (regardless of which digit appears in the cell.) Rooms are numbered from 1-9 in reading order. Eg: room 1 is in the top left, room 7 is in the bottom left.
WEAPONS:
• Some weapons have been found, at locations marked by an X. The values of the two cells separated by a weapon sum to 10.
THE VICTIM:
• Dr Awkward's body was found lying awkwardly in the doorway between rooms 4 and 7. This has been marked by a white outline. All that's known about the victim is that the values of his cells form a palindrome, reading the same from either end.
THE SUSPECTS:
• Digits do not repeat in a killer cage (although their values might.) Each suspect has a particular trait:
• Miss Parity (red) - values of orthogonally adjacent cell have a different parity (one is odd, the other is even).
• Mrs Summer (blue) - a doorway divides her cells into two distinct groups, whose values both have the same sum.
• Miss Tenclumpz - (white) - her cells can be divided into smaller distinct groups of orthogonally connected cells, each of which sum to 10.
• Colonel Nabner (yellow) - none of his cell's values are consecutive with (or the same as) each other.
• Professor Zipworthy (purple) - cells an equal distance from his central spot sum to the digit on his central spot.
• The Whispering Reverend (green) - adjacent cells must have values with a difference of at least 5.
One particular digit (not value) appears in all of the suspects' cages, except for the real killer. Who is it?
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▶ Contents ◀
0:00 Theme Music & News around the channel
2:13 Rules of today’s puzzle
8:05 Start Of Solve - Let's Get Cracking!

[@LednacekZ]

It is only appropriate that a Cluedo themed sudoku has rules that need to be read with a magnifying glass.

[@kayleighlehrman9566]

The greatest trick the devil ever pulled was convincing the world it was a six. It was, of course, massively aided in this ruse by virtue of already being a six.

[@pixllo]

Love how you phrased it, it avoids any kind of spoilers and it is very poetic. That's exactly why I took 5 minutes to disentangle myself. The moment I figured out how I had been tricked was both so annoying and satisfying at the same time.

[@dannybledford]

I guess we could assume that, since it's on an X, after all, that @martysears is implying that /that/ weapon is the one the murdered used

[@hzl1776]

this is too good

[@n8r8rutube]

Getting strong good omens vibes from the way that's phrased lol

[@martysears]

Ahhh this was such a cool surprise! I definitely never would have expected this to get featured, on account of the ridiculously long and nonsense ruleset! But really happy to see Mark tackle this. I first thought of this idea after seeing SenatorGronk's excellent puzzle 'Pseudo Coup' on the channel a few months ago. I really loved the 'box number' pseudo cell concept, and I had two ideas at once. One was the idea of how this rule could be used to elongate a seemingly impossibly long slow thermo - the route would be largely forced by the order of the box numbers. The 2nd was a silly idea for a rhyming title - Pseudo Cluedo - giving me a theme. Combining this logical idea and the thematic idea was where it all really started to come together. I had the loose path sorted very early on, but finishing the puzzle was an absolute headache - took months. I tried out so many different layouts of different characters in different positions. I wanted to try and have them aesthetically nicely placed, and also have every character prove useful in the solve. As you can see from Mark's solve, this wasn't entirely successful in the end - Mrs Summer and Miss Parity proved to be not altogether useful in Mark's solve path haha. This is one of those puzzles where it's very tricky to construct a tight solve path as there ends up being quite a lot to work with, so I think everyone will have their own variation of the path, using different characters more than others. As long as the overall experience is fun and engaging, is the main thing I'm aiming for. Mark I was very impressed by your ability to so quickly spot your mistakes and fix them. That sneaky bit with the 6s does often trip people up a bit in the middle. But I always enjoy the videos where you or Simon make little mistakes and have to find out where you went wrong. Adds a bit of drama :D Thanks again for choosing to showcase this, as I know it was a bit out there compared to most of my puzzles. PS: Mark - bonus challenge for you... can you work out why I called the victim Dr Awkward?

[@soulgorden]

Because it's also palindrome, thanks for the great puzzle,Marty.

[@martysears]

@@soulgorden you win 🙂

[@davidrattner9]

​@martysears just again fabulous from you!! Always a joy to see you set!! This was incredible!! Thank you for the insight above as to what went into this!!

[@berndscb1]

Mad but wonderful. Had me thinking I'd broken it a few times, when it was actually right. But of course I also broke it a few times at the start.

[@artsenor254]

I absolutely love this kind of themed puzzles, thanks a lot for this one ! (Mrs Summer might not have been useful for Mark, but she helped me spotting a mistake on my side, so that's still something. :p)

[@megaminxpll]

Someone got LUCKY. You forgot to undo the sudocells in box 4 & 6, when rewinding, they were not decided at that moment, but still they were left in.

[@CouerDeLion82]

This bothered me too! Deductions made on faulty logic that helped with the rest of the solve.

[@johnnyw4life]

Also, he didn’t unwind the 4-6 in r1c4-5 either, which also ended up being correct it seems. 😢

[@pixllo]

My thoughts exactly. Getting the right result with wrong logic is pointless. When noticing an error you should always rewind to the point where you made that decision. I felt pretty annoyed at today's solve.

[@christianwilhelm2830]

And exactly that was the point where I got stocked in the puzzle myself. The 6 in box 6 is forced. But the 4 in box 7 isn`t. The solve with this assumption of the of the pseudo cells in box 4 and 6 make the solve easy.

[@FelipeRodrigues-vj1zb]

Ah, I'm glad I read the comments before watching. Too bad, this looked interesting but now I'm just disappointed.

[@NinjarioPicmin]

I'm not a fan of seeing things like "it just must be this way", i always struggle to go forward at parts like that when solving myself, until i can definitively prove something must be a specific way for a certain reason

[@Vathorus]

Exactly, I couldn't even start this puzzle because I wasn't able to prove if all the pseudo cells are used, I only suspected some of them must, but never had a proof. So I gave up finally after half an hour only to find out that Mark did not care to prove it. I'm very disappointed in this. It should be provable, not guessable.

[@NinjarioPicmin]

@@Vathorus yeah usually when i get stuck like that (mostly on simons videos to be fair) i go to the video and watch until simon proves something i had no idea how to before and continue from there at least

[@xyzzyx7812]

Where did he do the "must be this way" shortcut? I solved it without any such requirement, without watching the video.

[@feldinho]

That Monica joke had me in stitches!! Great one, as always. :)

[@emilywilliams3237]

This was very entertaining in so many ways! I really loved the set up of the puzzle, the way the rules were written, the names of the characters in the mystery, and especially your pleasure in solving it, Mark. You did appear to be having a great time, and I loved it. So fun! Thank you for this fantastic video - one of my favorites of 2024 so far!

[@martysears]

Aw thankyou very much Emily!

[@davidrattner9]

Splendidly written from you!!!

[@longwaytotipperary]

Agree!!

[@adamdobrowolski2510]

So they missed an opportunity to call this "Sudoclue," I see... ...oh well, on to trying out the puzzle.

[@jinbe892]

In the UK, they call the game Cluedo, so cluedoku is closer

[@adamdobrowolski2510]

@@jinbe892 Fair enough. And upon further review, because Cluedo ORIGINATED in the UK, I'd say the original "Cluedoku" holds better. But now at least we know the North American version for it as well!

[@Melissanoma]

Seems like the constructor did the same wordplay as you, but took it a step further. Sudocluedo > pseudocluedo

[@blobz-1]

Such a brilliantly conceived puzzle by Marty -- congrats on the feature. Great solve by Mark!

[@davidrattner9]

Loved how you went about solving this Mark!! Thumbnail brilliant. Your persona is such a joy everyday on this channel.

[@nezarnassif2967]

AMAZING AMAZING AMAZING... Just loved it. Nice to see Mark finally having a go on one of these Simone-esce type of puzzles.

[@frankjiang1857]

Finished in 47:36. I kept messing up my line and having to start over even though certain constraints were placed on the line, I kept making assumptions which weren't quite valid. Fun puzzle!

[@jonathanwest6266]

At 32mins or thereabouts, what about the line going from box 5 to 4 diagonally upwards as a 5 - rather than changing to 6 first then descending?

[@BanaiFeldstein]

Yep, he messes up over there twice.

[@jonathanwest6266]

Ah Mark spotted it at 38mins...!!!

[@ericgogniat755]

He was also lucky with the pseudo cell in box 6, because he put it there because the wrong 6 he had put in raw 4 column 4, and he didn't check it afterwards

[@easternbrown]

True story: I recently played a game of cluedo with my family of 4. All of the clue cards I was dealt were room cards. On my first turn, before any other player had reached a room, I threw the dice and got a high enough score to reach a room and make an enquiry. However, none of the rooms I held in my hand were reachable, so all I could do was enter one I could get to, choose a weapon and a character at random and see what happened. As luck would have it nobody had any clue cards to show me, so I immediately made an accusation and won the game before the first turn was even complete! I tried to work out the probability of this combination of events leading to such a quick conclusion and it's easily less than 1 in 2000.

[@psymar]

39:16. Amusingly I figured out the killer faster than that but had to reread the rules one last time to finish the actual sudoku

[@titusadduxas]

46:01 - That was brilliant; another masterpiece by Marty Sears. Loved it.

[@debrabowen4276]

These puzzles just keep getting crazier and crazier! Love it

[@markablov]

It was pretty hardwork to determine fully logically how line traverses because of so many possibilities. I wanted to avoid following intuition and drawing line without making sure that it's only possible way how it should go. And it was the most complex part of the solve. Expected Mark to do the same, but unfortunatelly he just flew through possibilities and false conclusions. Still good video as usual.

[@pairot01]

Was there any way of deducing the path other than painstakingly going through every single other possibility? I too was disappointed with Mark's method.

[@markablov]

@@pairot01 I noticed that we can't move from box 9 to the box 6 (it just 2 possibilities, which die fast enough not to be boring). So box 9 contains end of the path. From there it was more or less clean how path was going. Another key deduction was that path have to cross the border between box 4 and box 7. When I saw that area of interest has few possibilities I just switched to another box, because I didn't want to miss some options and wanted to finish puzzle logically.

[@jinkela7295]

38:18 when you remove the 6 in r4c4, the 46 X in box 2 should also be reduced to 4-6 pencilmarks and the pseudo cell in box 6 doesn't have to be placed in the first position and the 4 on the palindrome should also be removed...

[@honeyspiderii]

I made the same mistake as Mark with the path traveling between boxes 5 and 4. Didn't spot the triple-5 option until the zipper became impossible. So, the fact that Mark also tripped up on that one made me feel a little better about missing that initially. Thanks for being persistent, pushing through and sharing your solve!

[@chocolateboy300]

I finished in 70 minutes. In the beginning, I was very daunted by the massive ruleset and board. However, it became quite easy once I focused on the line around the grid. I, simply, put in the minimums starting from box 1 and it worked out beautifully. That made me feel much better about the rules. From there, it was a lot of fun figuring the suspect clues and the pseudo digit locations. At the end I had a deadly pattern and realized that pseudo digits have to not repeat, putting me across the finish. Great Puzzle! While I was analyzing the numbers, I completed missed Miss Tenclumpz region and falsely accused Miss Parity through 1s. I don't think that makes me a very good detective.

[@anaayoung9142]

Amazing type of rules. I am happy to has watched it, and that you were able to solve the mistery 🧐

[@breathless792]

I actually made a few of the same mistakes: putting a 5 in the centre of the purple cage and the 6 on the path in th wrong position resulting in a cell in box one "seeing" every digit and few other mistakes aswell

[@Mn0ty]

I might be wrong, but I think the equal sum is not needed to solve the puzzle, as its cells are forced to make equal sum by other rules, whether you mark it as equal sum or not.

[@RichSmith77]

Agreed. I don't think I used it as an equal sum line either. I just checked it was valid at the end, similar to Mark.

[@hzl1776]

Great puzzle! I love the creative ones like this

[@longwaytotipperary]

What a wild and wacky rule set!! Very enjoyable

[@jonathanallan5007]

The party popper for the three in the corner should have emanated from the opposite corner, Cluedo/Clue style..

[@janeflett4971]

Absolutely brilliant!

[@djlungo]

That was great fun and a really brilliant puzzle...

[@MattYDdraig]

13:12 Marty Sears is an absolute genius. To even think of this is insane, but to execute it so cleanly is unthinkably great.

[@martysears]

❤

[@darthrainbows]

Ugh....I made soooo many mistakes in this one. Watched the video to see how Mark did it, and pulled my hair out over him making the same mistakes, and then not correcting them correctly😅

[@tessabrisac7423]

Delicious crazy puzzle, delicious crazy video!

[@ShardyRedVH]

The victim was looking more and more sus as I progressed through the puzzle. Just look at the state of that palindrome! Also, thank you Mark; I did not understand the pseudo cell rules and would have never been able to start this puzzle, let alone solve it, without your explanation!

[@enigma-mixed5933]

Made me smile more than once. Shame it wasn't featured on a bad day. You know some days are bad and you turn on KZbin and think "I hope at least the sudoku is good" this would've been great on one of those days. Still great tho !!!

[@adrianhead6272]

The path almost places itself... it has to either increase or stay the same, but has to connect cells in boxes 1 and 9... therefore the pseudo-cells are key. If you don't go from box 1 to box 2 to box 3, you eliminate too many pseudos. That leaves a relatively obvious direction, and allows you to place 1s, 2s, 3s, 4s and 7s along it. The remaining points on the route become either pseudos or the remaining 5,6,8 and 9s, and geometry fixes that. Completed in 14m40s.

[@mime.b3904]

This is an absolutely incredible puzzle! It felt very intuitive to me, thanks Marty if you ever read this!

[@martysears]

I have read it :) Thank you, really happy you enjoyed it and found it inuitive too

[@Sam_on_YouTube]

Miss Tenclumz with a 6 in room 2.

[@jameshastie3864]

Having read the preamble I thought I'd come here and post 'First!' as that seems within my skill set.

[@bypeng]

This puzzle is wonderful but Mark's claim that the detective visits the rooms in the order 123654789 is not so convincing. Here I suggest my thought to help proving Mark's claim. No matter how we visit all of the letter cells, the length of the path (slow thermo) must not less than 21, which is the total length of the minimum spanning tree connecting the letters. To construct THIS thermo in this grid, there are only 9 true cells, 9 pseudo cells, and 5 diagonalized doors which can join the construction. Now Mark's claim becomes more reasonable: the only possible room visiting order must be 123654789, making all 9 true cells, 5 diagonalized doors and pseudo cells 1235789 to join the thermo, and the fact the length is the same as that of the minimum spanning tree tells us that we need to apply the most effective way to connect the letters.

[@martysears]

that is a nice way of visualising it, yes. It's definitely provable by minimising things and making full use of pseudo cells, and realising it is still only just possible. It just takes a bit of playing around and trying things out first to get to that conclusion

[@Vathorus]

Can someone please show a definitive proof that the path has to take on all of the pseudo cells? All i see here is guesswork, and that is not enough for me. How do we know the uniqueness of this solution?

[@martysears]

As you can see from Mark's path, the path picks up the maximum number of pseudo cells (7 out of 9), and takes the least number of possible cells in each room that it can. The rooms are visited in the only order that lets all 7 of those pseudo cells be useful (by providing an extra cell to the length) at the point they are picked up. It is quite clear (to me at least) that the room visiting order 123654789 cannot be beaten in terms of keeping the current room number in sync with where you're at on the slow thermo as much as possible... the only thing better would be if you could somehow do the order 123456789, and that's clearly impossible to get directly from room 3 to room 4, and room 6 to room 7. With some experimenting with other orders, like 147852369, you can quickly realise why any of these other orders will break (and not just slightly, but massively.) Without maximum use of pseudo cells, the path is nowhere near long enough. So by doing the room order 123654789, Mark is maximising the number of pseudocells available for the path (and therefore maximising the total number of available cells for the path), and he's also minimising the cells used in each room as much as possible by moving efficiently, and even doing all that, it STILL only just reaches, with no wiggle room (except in a few trivial details like 6 being able to be in one of two places). In my eyes that is a proof that this maximally efficient path must be the correct way, because it is only just good enough. I do get though that this can be tricky to visualise, and it requires quite a bit of 'playing around' at the start to learn how the logic works and to convince oneself that that is indeed the most efficient and maximally pseudoed route.

[@agoristtaxadvice]

Am I missing something in his solve- I think there's a logical/mistake that was made in how he figured out the Psuedo cells in boxes 4 and 6 (even if he did get it correct), since he figured them out by using a 6 located in r4x4 (which was not correct).

[@agoristtaxadvice]

... and scrolling to other comments I see I'm not the only one who noticed this.

[@Timlagor]

I think it would be fine for the channel to give one day over to less accessible puzzles. Once again I find myself wishing there were a few spare cells outside the grid I could use for notes. Best might be to have a notepad area on the right.

[@MattYDdraig]

In fairness, the actual solve of this puzzle was quite accessible. The genius lay in the setup rather than impossible hard logic.

[@Timlagor]

@@MattYDdraig It's a lot of variant rules in different parts of the puzzle. If they're all new to you that's going to be an obstacle quite aside from the difficulty.

[@piarittersporn]

It took me 15 minutes at least to unterstand the rules completely .... but then I really enjoyed this great puzzle very much.

[@enericm]

I got the path, and have a great many of the same digits placed, however, I had the pseudo cells in boxes 4 & 6 in R4C1 & R6C7 respectively. I end up running out of valid digits to place in the pseudo cells that way, I guess I need to watch the video again, but I didn't get how those cells got correctly placed during the solve.

[@RichSmith77]

I had a weird ending to my solve. For some reason, I forgot I didn't yet have a pseudo digit placed in box 4 or 6. I had a genuine 4 on the end of the palindrome in box 7, yet the other end was either a 1 or 9. "Oh no, I thought I was almost finished. I've no idea where I went wrong, and I don't feel like rewinding to find my mistake. I'll finish entering digits and see how much is wrong at the end. Perhaps I'll see an easy way to fix it..." Entered final digit. "Yey, congrats! You solved the puzzle" 🤔 "Wait, what? But my palindrome is broken... Ohhh, a pseudo cell has value 4 in box 4!" 😂

[@nightwishlover8913]

Minimal ruleset again, I see...

[@awilliams1701]

First it was the 6 in box 5 that bugged me. Now it's the 5 in box 1. Except this time I can already see it's broken by sudoku.

[@MNalias]

The difficulty in this puzzle is not from finding the solution, but from how easy it is to mess up.

[@user-gj5uc4yx3i]

I had so much fun with the solve, I forgot to about discovering the killer until I watched the video.

[@jinbe892]

I’m so lost with the rules. I’ll just watch this one. Looks fun though!

[@friedhelm5344]

Great!

[@headoftss]

What a shame that Mark enabled the pen tool early on and then didn’t use it for the path. Over reliance on colours?

[@Gonzalo_Garcia_]

50:15 for me. Even if I tried to solve it "logically", I still felt like guessing my way through it half of the time. Would love to know if there's supposed to be a cleaner solvepath. Nice idea anyway.

[@kevinruggles206]

I thought I was wrong once but I was mistaken

[@ianoz1]

Edit: I couldn't understand why the "killer" digit is what Mark concluded, when it appears in 5 out of 6 suspect cages. There is only one digit that does not appear in any suspect cage (only the victim)... is 9 the killer digit?. I get it now... after re-reading the final rule about a dozen times and recounting digits. D'oh!

[@uberless1]

What is the show being referenced in the thumbnail?

[@martysears]

That is the movie Clue... a classic!

[@jussikuusela7345]

Did Dr. Awkward even have time to consume the Retsina Canister?

[@AcidDotCom]

48:57 "Sounded like Monika" 🤣

[@rockratzero]

Wish the boys would have grabbed up the CtC community 9K celebration clue-themed pack and gave it a nice big go on stream, but I'm biased :)

[@timb9828]

Another lucky illogical move, at 30:30, he erases the 5 in r4c3? But I don't see why that 5 is ruled out. Just because it works (and indeed is correct) that the path instead goes to a 6 in r4c4, I don't see from this position why we ruled out the path going from r6c5 (genuine 5) to r5c4 (pseudo 5) to r4c3 (genuine 5) down to the possible 6s in r5. Am I missing something?

[@RichSmith77]

He was forced to correct it. (6 in r4c4 is not correct, as it turns out).

[@timb9828]

@@RichSmith77 I had an error in my solve and I thought this was it haha.

[@dustpan5356]

TIL learned that Clue is known as Cluedo in the UK

[@pairot01]

This puzzle is so frustrating lol. I think I see a path that can make the slow thermo work, it's almost surely the correct one, but I have no idea how to prove it!

[@pairot01]

Oh, apparently we don't prove it. We just say "it surely must be this way" and do it.

[@martysears]

@@pairot01 you can prove it by making it as efficient as possible, maximising use of pseudo cells to boost the length, and realising that it only just reaches when you do that. visiting the rooms in this 123654789 order is the only way that 7 of the pseudocells are usable in a useful way, and you need all of them, and its clearly impossible to use more than 7 of them, short of Grid Mansion being a torus

[@ericsjoberg8167]

This felt so hard! And yet I finished it in 35 mins. 🤨

[@justinco7492]

Can anybody confirm akternative solution? swap row8 and row9 in col2, col5 and col8. Looks like no rule was violated.

[@justinco7492]

It also result in another solution with swap col8-9 in rows 2,6 and 9

[@martysears]

The rule about each digit only appearing once in a pseudo cell sorts this out. eg r9c6 needs to be a pseudocell, so couldnt be a 3 instead of a 4 because we already have a 3 in a pseudo cell.

[@zachnichols8642]

45:55 nice

[@RoderickEtheria]

I didn't realize the pseudo digit could be real until a while later.

[@markjreed]

Hm, I didn't have the 6 disguised as itself. I had the 4 in r4c1 and the 1 in r6c7 as the pseudodigits. I don't see how that causes any problem . .

[@RoderickEtheria]

@@markjreed You didn't use all digits once as pseudo digits. They represent the digits in their boxes, but they also have to be a set of nine different digits, not values.

[@markjreed]

@@RoderickEtheria Ohhhh. Right. Thanks.

[@jinkela7295]

24:47 you can't place two values of 5 on the zipper pentomino

[@blim8777]

I would have changed the last rule: if instead of "One particular digit (not value) appears in all of the suspects' cages, except for the real killer" we had "One particular digit (not value) appears in none of the cages, except for the real killer" we would have had a much more surprising conclusion: this would have been a suicide!

[@martysears]

😂

[@francoisduez601]

The end is not complete... the killer is one of the suspects, not a digit (but the last deduction is the easiest to make 😁)

[@redstonekid2222]

Spoiler warning: Of course the maid Miss Tenclumps is the killer!

[@theredstoneengineer6934]

35:31 for me

[@jinkela7295]

19:33 r3c4's minimum value is 1, not 2

[@agoristtaxadvice]

I totally don't understand the rules for the victim- His body is in 4 squares which is a palindrome... but doesn't that mean that r6c2 and r7c2 have to be the same, which is a violation of sudoku?..... Oh, I see how it's possible with a Psedo cell. Wow...

[@martysears]

:)

[@Manigo1743]

So much flawed logic. R4C6 is not necessarily a 6, because it also works with R4C3 being a 5. Then you use that wrong 6 in box 5 to place the pseudo cell in box 6, but that could be a normal 6 if the 6 in box 5 is wrong (which it turns out to be). The pseudo cell in box 6 could have been in R6C7. This again made you place the pseudo cell in box 4, which could have been in R1C4. When you then discover that the 6 in box 5 is wrong, you don't remove the two pseudo cells you have placed based on that wrong digit.

[@Scy]

This video is a logical clusterf**k, whereas Simon will spend 30 minutes agonising over a single digit making logical sense, Mark just went ham on room 5 and assumed about 5 different things, got it wrong, used those wrong assumptions for other cells, found out he was wrong, but never revisited the previous deductions. Simon would get an aneurism watching this video.

[@thebishop4112]

I agree. For example, while it seems obvious to start in box 1, I suspect Simon would have proved that is where you *must* start. Having said that, he manages to solve the puzzle which is more than I can say.

[@KO47893]

41:20 Places a six in the pseudo cell which he previously determined to be a pseudo cell because because he couldn't place a six in it.

[@Scy]

@@thebishop4112 i think it's pretty early obvious that starting in box 1 is the way to go

[@Scy]

@@KO47893 yes! places a pseudo cell and proceeds to place several more, including digits all over the board, then finds out something a lot earlier was WRONG, but doesn't undo all his placements.... *EEEEEEEEEEEE*

[@Cthulhus_Mum]

I think I know why I generally prefer Simon’s videos to Mark’s - Mark is incredibly good at making me see that *he* is amazing at solving sudokus - while Simon genuinely makes me feel like *I’m* amazing at solving sudokus 🤣🤣🤣 I wonder how others feel? There’s probably a balance in preference (and I also hope very much that neither Simon nor Mark is offended by mine! No idea if they read these comments, but I don’t want to be mean to either of them!)

[@elinevandam4332]

I prefer the type of sudokus Mark solves over the ones Simon solves.

[@Ratzfaz]

isn't the killer the 9 ? one particular digit appears in all of the colored cages, ''EXCEPT'' for the real killer.

[@martysears]

The killer is a character, not a digit...

[@Pritchie45]

90 minutes

[@CaptainSpock1701]

As I hit the like button the counter went to 666 likes!

[@skiptrailer7048]

if I comment in I'll get a notication if someone replies?

[@SilvrSavior]

I think it is usually the first reply comment to yours will always throw a notification and a reply to you specifically should do the same.

[@psymar]

I believe so

[@veggiet2009]

Testing testing 1 2 1 2

[@Manigo1743]

You always say that you prefer puzzles with simple rules, but you do nothing but the exact opposite. They just get worse and worse. >.

[@BikesAndScribbles]

Worst solve I think I've ever seen. I'd have been too embarased to upload the video. Watching it after my solve got me so confused and annoyed at times.