A Sudoku With No Visible Cells (!)

Рет қаралды 144,039

Жыл бұрын

** TODAY'S PUZZLE **
Jay Dyer decides the best way to present a Fog Of War sudoku is with absolutely no cells visible! Blackout, her latest puzzle, is weird and most definitely wonderful with some absolutely unique logic. See if you can find your way through the fog (and don't cheat!)
Play the puzzle at the link below:
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Rules:
Normal sudoku rules apply. Cells are initially covered in fog, and placing correct digits will clear the fog around those digits. Mark nine cells such that there is one marked cell in each row, column and 3x3 box. The digit in the first cell of a row, column or 3x3 box gives the position of the marked cell in that row, column or 3x3 box. Each digit appears in exactly one marked cell. Adjacent digits on a green line differ by at least 5.

Eg if r5c3 was a marked cell then r5c1 would be a 3 (marked cell is 3rd position in its row); r1c3 would be a 5 (marked cell is 5th position in its column); and r4c1 would be a 6 (marked cell is the 6th position in normal reading order of its 3x3 box).
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Пікірлер: 408

@sacredsock8031 Жыл бұрын

44:44 Simon, what you are missing is the (second) most important rule in sudoku, look at where the cursor is

@bobblebardsley Жыл бұрын

That's a very pleasing timestamp.

@monkeyunit4533 Жыл бұрын

You'd almost suspect him doing it on purpose.

@willlaurie2860 Жыл бұрын

He's definitely trolling us lol

@ronbalut592 Жыл бұрын

Only 5 minutes to see it.

@Hakucho64 Жыл бұрын

@@ronbalut592 he gave us a good scare at 47:42

@Bonehead777 Жыл бұрын

Haha. I loved how Simon missed the floating 6 under his cursor at44 minutes in which would solve his 5/6 dilemma on same row. Not that I have ever done such a thing. 😗

@toddbiesel4288 Жыл бұрын

When Simon asked, "What am I missing here?", I literally laughed like Muttley.

@madusan1 Жыл бұрын

Simon is brilliant at solving but he is not the best at scanning (which he admits to). Obvious clues can often escape him, leaving me to scream into my iPad. "Simon, it's right in front of you! Simon!!!". Lol. Still love Simon's solves. No question he does have a very good solving mind.

@kiphansen8319 Жыл бұрын

I think Simon's subconscious was trying to tell him something by lining up the cursor at that point. His conscious mind was having none of it.😅

@andraques Жыл бұрын

Simon is just trolling us lol

@mongmanmarkyt2897 Жыл бұрын

@@kiphansen8319 absolutely none of it. But it's also great to see him get the answer in other ways too, to further prove an obvious number

@paulinnanjing 11 ай бұрын

I'm always amazed at Simon's complete inability to do sudoku, in between his utter genius.

@six_5000 Жыл бұрын

😂 please Simon, never change 😂 **Pencil marks 56 with a 6 in the row “And that’s all very well but it doesn’t do it does it?” **Places cursor over the obvious 6 “What is it that I’m missing here?”

@tonyawright6020 Жыл бұрын

This! I was laughing so much.

@brandonbernardo4410 11 ай бұрын

I was screaming at my screen lol

@StephanSpelde 5 ай бұрын

That was hilarious!

@18lolable Жыл бұрын

44:16 So not only does he completely miss the 6 in r7c7 pointing at r7c3, he also then nicely places his mouse cursor over it seconds later for some world class irony.

@michaelandersen-kk4fc Жыл бұрын

yes I screamed about that

@asadickens9353 Жыл бұрын

I saw the same thing! Simon is thinking on a different plane! he's not in our feeble universe where we see 6s

@EricMeyerweb Жыл бұрын

And then, with the cursor pointing right at the 6, muses “What am I missing?” followed by an awkward silence. I couldn’t help it, I snortchuckled.

@TheMan83554 Жыл бұрын

If I didn't think Simon would be a terrible actor, not that I have any evidence, I'd think he was doing it deliberately.

@dustpan5356 Жыл бұрын

He complains about the audacity of setters to make him do sudoku, so it should be no surprise he misses simple sudoku things like this 😂

@HunterJE Жыл бұрын

49:28 "How long have I had this 6 for?" Since before you put the 56 pencil mark in and then immediately lamented not getting a digit while your cursor was hovering over the 6 XD

@jaydyer3999 Жыл бұрын

Thanks for the feature! This ruleset has also been referred to as "house numbering", after the first puzzle I used it in, and I couldn't resist turning it into a fog of war after seeing the puzzle from FD and MaFC. Another way you can think about the opening is that the 1 in row 1 is going to be marked, as is the 1 in column 1, so those have to be the same cell.

@markbennet9058 Жыл бұрын

Clean logic, as expected.

@danielszanto2955 Жыл бұрын

That seems so obvious with the concurrent 1 in r1 and c1, I got it in 20 seconds. The indexing part and finding the marked cells was quick and easy, though after that came sudokuland where I suck so another 45 minutes... Anyway, that opening was really nice, you deserve a bow for it alone :)

@BremSterPuzzles Жыл бұрын

Stunning puzzle. Beautifully set.

@longwaytotipperary Жыл бұрын

What a fantastic rule set!!!

@trisha2584 Жыл бұрын

Great puzzle. I got the opener in box 1 quickly but then I slowed down.....

@ABodyInProgress Жыл бұрын

Simon and his tunnel vision ... One of the benefits I have of being an amateur solver is desperation: And out of desperation, the moment I reduce a cell to two possibilities, I instantly look for hope that one of them gets knocked out. 44:44 - Simon, there's a 6 looking right at that 5/6 cell!

@fluffycritter Жыл бұрын

oh my god I was yelling at the screen so much at that point (and many others in this puzzle)

@erlandodk Жыл бұрын

44:44 "What is it I'm missing here?" You're..... literally pointing at it.. 😳😂 We all love Simon for dazzling us with his brilliant logical deductions. His sudoku skills could use some work though 🤪

@inspiringsand123 Жыл бұрын

Rules: 04:58 Let's Get Cracking: 08:37 Simon's time: 53m01s Puzzle Solved: 1:01:38 What about this video's Top Tier Simarkisms?! Three In the Corner: 6x (42:59, 48:02, 55:50, 55:55, 56:00, 56:07) Bobbins: 4x (53:16, 53:16, 53:16, 57:53) Scooby-Doo: 1x (08:41) The Secret: 1x (22:33) Schrödinger Cell: 1x (15:40) You Rotten Thing: 1x (39:58) And how about this video's Simarkisms?! Ah: 20x (12:41, 12:46, 13:39, 14:26, 28:29, 30:28, 30:47, 32:55, 34:57, 37:26, 39:58, 44:46, 49:50, 50:31, 52:13, 52:15, 55:45, 58:51, 59:17, 1:00:19) By Sudoku: 12x (28:57, 29:48, 40:14, 40:35, 42:21, 45:13, 46:07, 57:12, 58:01, 58:26, 59:54, 1:01:32) Hang On: 7x (17:06, 17:08, 18:17, 41:25, 58:49, 58:49, 58:49) Sorry: 6x (15:55, 24:46, 32:35, 49:23, 49:34, 53:27) Pencil Mark/mark: 6x (15:18, 15:21, 35:58, 39:14, 50:37, 52:46) Beautiful: 5x (23:26, 23:28, 35:33, 37:33, 51:24) In Fact: 5x (02:44, 12:54, 15:47, 19:34, 20:01) Clever: 4x (03:47, 06:11, 19:24, 1:00:23) First Digit: 4x (07:06, 07:11, 07:13, 07:15) Obviously: 4x (06:14, 22:58, 23:05, 1:00:14) Lovely: 3x (18:37, 29:46, 1:02:09) Shouting: 3x (02:39, 02:40, 03:57) Symmetry: 3x (18:42, 20:56, 21:32) Naked Single: 2x (49:23, 57:38) Brilliant: 2x (03:44, 1:01:52) Stunning: 2x (1:02:52, 1:02:54) Plonk: 2x (08:52, 26:35) Cake!: 2x (04:00, 04:36) Good Grief: 1x (37:30) What a Puzzle: 1x (1:01:36) Out of Nowhere: 1x (56:30) Naughty: 1x (44:52) I Have no Clue: 1x (12:22) Incredible: 1x (01:29) Gorgeous: 1x (1:02:23) Bonkers: 1x (08:32) If I Trust my Pencil Marks: 1x (50:37) Whoopsie: 1x (11:23) Wow: 1x (43:37) Next Trick: 1x (57:17) What Does This Mean?: 1x (32:27) Nature: 1x (40:31) Most popular number(>9), digit and colour this video: Nineteen (2 mentions) One (107 mentions) Red (72 mentions) Antithesis Battles: Low (26) - High (19) Even (3) - Odd (0) Lower (4) - Higher (2) Black (4) - White (0) Column (48) - Row (37) 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!

@Mrqwerty2109 Жыл бұрын

Loves these, keep them going!

@emo6577 Жыл бұрын

You and the programmer behind this bot are wonderful,

@COArSe_D1RTxxx Жыл бұрын

Schizophrenic cells

@Nightknight1992 Жыл бұрын

the breakin was so much simpler than what simon made it out to be :D every digit can only be marked once, so the 1s in row 1 and column 1 have to be referencing the same cell to avoid 2 marked 1s

@martysears Жыл бұрын

Ah of course! I actually was totally blind to that too and got the break-in by elimination like Simon did. Even after solving the puzzle, then watching Simon solve it, I didn’t think of that til you just explained it 😅

@Coldheart322 Жыл бұрын

@@martysears I had a hunch 1 had to be in the corner, and then worked on proving that hunch. Soon came to the same conclusion that trying to put 1 anywhere else on the row or column would break things.

@JamesTaylor3rd Жыл бұрын

Yes, I very quickly saw that, and found myself amazed when Simon simply ruled out all of the other starter numbers instead. It wasn't until the 2nd number, where I knew I had a 4 at one of the ends of the green line but had to work out which one, where I went through all the same calculations Simon used for the 1st digit. I love watching these videos after solving the puzzle to see how Mark or Simon's thinking differs from mine. Amazing puzzle and fantastic video, as always.

@bertbergers9171 Жыл бұрын

I don´t remember why i exluded that option from being possible, but after 8 minutes of hard thinking and elimination i broke the puzzle by having two 1´s marked in r6c1 and r1c6. Forgetting that i can only mark 1 of each digit. Thank you for telling tired old me that the only solve to the problem of where r1c1 will hint to without getting 2 equal digits marked.

@markbennet9058 Жыл бұрын

At 44:30 a classic "look at the cell where the cursor is" moment ...

@quothacreations3465 Жыл бұрын

take a bow, Jay Dyer, that was a virtuoso sudoku--one of the top ten of all time, in my book. it was just the right combination of joy and struggle.

@achimsinn6189 Жыл бұрын

I love how Simon needet like 15 Minutes to figure out the first number in the most complicated way possible while it would have been much simpler to figure out, if he remembered that the numbers in the marked cells can't repeat.

@thunnis2 Жыл бұрын

44:38 "What is it that i'm missing" as he hovers the 6 xD

@bobbie0976 Жыл бұрын

It’s funny to see Simon in total awe for a fog covering the entire grid, when there was one like that just a week ago. I totally enjoy these, find them rather on the easy side of the spectrum. You just know where the break in needs to be, for lack of anything else! But they are lots of fun!!Kudos to the creators!!!

@masheroz Жыл бұрын

But that one had clues outside the grid. This didn't have clues, just rules.

@zirco77 Жыл бұрын

There's a really shorter way to break in: row 1 and column 1 need exactly one 1. Whichever column you put 1 in r1, it means the marked digit is right there (itself) in row 1, and symmetrically for the 1 you put in c1. But you can't have two marked 1s on the grid, so the only place put 1 in r1 or c1 is in r1c1. Nevertheless, the time spent by Simon at first isn't lost as those observations allow to break the symmetry (along the diagonal) after you put the first 1.

@feuerfrosch1920 9 ай бұрын

this is what i did sometimes u just see it sometimes u dont

@emilywilliams3237 Жыл бұрын

Simon, this was wonderful. I just loved it from start to finish, not least of all because you enjoyed it so much. Of course it is also a wonderful puzzle with a very interesting Fog restriction and what a break-in! I will also say that I did NOT notice what so many of the comments in place at the time I am writing this one think is the most amazing thing, which is that you missed a scanning opportunity. I was much more focused on the many logical things you were working out at that time. I remember from some time ago - possibly a year or more - that a commenter mentioned that there are at least two sorts of reasoning required in these more complex sudoku puzzles - the simple logic required to do thorough scanning, and the deeper logic and rigorous reasoning required to get through the several layers in the more complex portions of a puzzle. Switching between those two types of reasoning, said this commenter, is actually non-trivial for the human brain, and thus it is not surprising at all that someone working on the deeper level to solve a complicated thing would miss something on the shallower level, a simple scanning thing. I, for one, am very happy that you get immersed in the deeper part, because I think you love it, and also because I find it so much more interesting and instructive. Thanks so much for your enthusiasm - it is entirely contagious.

@FelipeRodrigues-vj1zb Жыл бұрын

This has got to be my favorite type of variant Sudoku. Absolutely amazing. I've even solved an easier one the other day. PS: that cursor at the 6 at 44 min had me laughing out loud. Never change Simon 😂

@Stompound Жыл бұрын

One of my favorite things about fog of war puzzles is that they give you a good hint on where to look for your next logical deduction. They flow really nicely

@DwarfInBlues Жыл бұрын

The Whispers line is so much thicker than usual. Wonder how long it has taken to gauge the necessary width for box one break-in :D Such a Simon moment! 44-44 "What is it I'm missing here" -- "YES!"

@martysears Жыл бұрын

I noticed that too... if the lines were any thinner, it would have been too easy to miss the slight slither of line crossing the corner of a cell diagonally

@martynhill3479 Жыл бұрын

Even more frustrating was his cursor was in the cell with a 6 in row 7 which would have resolved the 56 he had just placed

@andrewpalmer5189 Жыл бұрын

That puzzle was an absolute treat. It took me just over two hours but it was a pleasure all the way. Jay, if you read this comment - nice one, great work.

@GuilhermeCarvalhoComposer Жыл бұрын

I had first seen this and not even tried to face the puzzle because of the video length. But then I did the "Perfect Miracle", which has similar rules, and suddenly this one became possible. It's a very nice puzzle indeed. Still took me way longer than it should have because once I cleared almost all the fog I kept missing _sudoku_ - of all things.

@chocolateboy300 Ай бұрын

I finished in 55 minutes. This was one of the most enjoyable Sudokus I have have ever played. The break-in was beautiful, taking me about 28 minutes to figure out. The logic used to figure out where the rest of the marked digits go was beautiful. Finally, the finish with me remembering that all marked digits having to be different led to a beautiful ending. One of the best! Great Puzzle!

@clarityc481 Жыл бұрын

Oh, this one was great. 43:36 for me, and I really enjoyed this one. It's rare to have a Fog of War puzzle that jumps around the whole grid like this, but it was really fun unpicking it in all the different areas of the puzzle at once while still leaving certain odd corners fogged out for so long. I'm always a fan of index puzzles, and this was a great one.

@titusadduxas Жыл бұрын

1:48:36 OMG - That was a challenge. I did it on an iPhone and it was really difficult to spot those little green corners! Happy enough to have solved it though. Lovely puzzle.

@Viva_Reverie Жыл бұрын

Took me over 3 hours, but I think this is the first time I've solved a puzzle with a 1+ hour video runtime without any help from the video! Love the fog of war puzzles!

@inwalters Жыл бұрын

First time in a while I've een able to comment when the puzzle came out, so I want to repeat my suggestion that on Boxing Day (December 26) [which is a day for switching positions in the UK] I want to see creators like Phistomefel, Aad van de Wetering, Shye, Jay Dyer or Rocky Roer solve puzzles created by Simon and Mark, so they can take a day off.

@longwaytotipperary Жыл бұрын

That’s a great idea 👍🏻

@chitraagarwal8259 Жыл бұрын

Also a similar Gas series by those three constructors

@easy-goingechidna Жыл бұрын

Terrific idea!

@th.nd.r Жыл бұрын

Incredibly well set and solved!! I love the concept, the rulesets and how they’re interwoven, and just in general Simon doing a Jay Dyer puzzle, and especially a Fog of War puzzle, will always be great :)

@andyjackson2891 Жыл бұрын

No digits given but completely solvable - amazing puzzle !! Took me a while to get my head around the rule-set and different ending to Simon as '5' on bottom corner is more obvious from 50:00

@Swisswavey Жыл бұрын

45 minutes for me. Incredibly clever puzzle, I loved it. Thanks for sharing it.

@apiyo_puzzles Жыл бұрын

Thank you Simon for the shout out! Chuffed =) And what a puzzle today. Such a clearcut ruleset to start an empty grid, and not a lot of clues beyond. Amazing as ever from Jay.

@fade2dblack Жыл бұрын

Rules: 4:44 Let's get cracking: 8:38

@OsefKincaid Жыл бұрын

44:40, cursor on the 6 that forces the 56 to be a 5: "What am I missing here?"

@SMTRodent Жыл бұрын

This is such a complete joy to watch! "Watch this!"

@Patterner Жыл бұрын

the first video ever where "watch this" is *NOT* followed by someone getting hurt

@Cook66 Жыл бұрын

As a programmer (if that is relevant?), I figured out the first digit as Simon was reading the rules. Usually I can just about figure out what is going on as Simon explains his reasoning, it was fun to be a step ahead for once! Thanks for the videos!

@benwhite5734 Жыл бұрын

I intuitively knew the top-left cell was a 1 and was so confident that I just went ahead and wrote it in. Even though I knew it was right (because the fog cleared), I still made myself go through and disprove all the other values before continuing so I wouldn't feel like I'd cheated.

@fluffycritter Жыл бұрын

I got the 1 right away because rather than thinking about what would have been possible there, I thought about where the marked 1 had to go - it would have to go in the first cell in its box, and that would also necessitate the first cell in its row and column to also be 1. Which meant that the 1 *had* to go in the first box.

@BVIGrockle Жыл бұрын

Definitely helped having seen the miracle video yesterday to go back and solve this. An awesome puzzle!

@cathybryant5119 Жыл бұрын

I love that Simon has a favourite cell in the puzzle.

@ronjohnson6916 Жыл бұрын

44:32 -- the cursor on the 6 pointing at R7C3. Still loved the solve.

@StarClan4evr Жыл бұрын

Solved all on my own, in about 2 hours! Wonderful puzzle with a marvelous break-in. I recommend this one highly :D

@dancomber9768 Жыл бұрын

I was very dumfounded by how quickly I was able to do this particular one (22 minutes!). It just all seemed to make sense to me and the indexing was hugely helpful in filling in the grid and clearing the fog. Immediately I knew 1 was top left and box 2 had to be 8 or 9 and box 3 had to be at least 4 and it just got all the marked cell in a couple of minutes.

@LavenderGooms Жыл бұрын

Very, very good puzzle. Logicing the breakin is just great. One rule limiting so many digits like that, loved it.

@felix_irgendwas Жыл бұрын

30:45 for me. Wow, never beaten Simon by such a large amount of time before. Really happy I found that R1C1 must be the marked 1 in the grid almost instantly. The puzzle flowed suuuper smoothly, one of the most enjoyable solves I've ever had. Amazing setting, Jay :)

@dertigerbauch Жыл бұрын

This is my favourite 2023 puzzle so far. Absolutely stunning logic and so much fun

@soulbound11 Жыл бұрын

I broke in super easy and quick with unfounded confidence and not checking my logic, but then i got stuck for 25 minutes because i didnt notice the disjointed subset rule for the marked cells. Sneakily placed at the end of the instructions so i still didnt notice it the first two times i checked specifically for it. Beautiful puzzle. It combines three things i love in my sudoku: disjoint subsets, indexing, and my favorite of all time fog of war! Only in puzzles like this do i have any hope of competing time-wise with Simon and his handicap of explaining as he solves :P

@michaelpdawson Жыл бұрын

Love these fog puzzles! Took me a bit over two hours, but I managed to solve it. Fun rule set.

@zuphix1802 11 ай бұрын

62:42, I was so happy with this one! Extremely fun puzzle, very satisfying to find where you need to look for the next clue. Got a bit overwhelmed at times with the 'eureka' moments, placing the first digit and then finding the second marked cell. Magical.

@drewskavich Жыл бұрын

A completely fog-filled grid, with nothing visible from the outside. And without an encyclopedic ruleset. 3 cheers. What a wonderful puzzle.

@SeriousPigi Жыл бұрын

More approachable than the solution time suggests, great puzzle and solve!

@keode Жыл бұрын

I may have laughed when Simon completely missed the 6 looking at a 5/6 cell, but I also spent a non-trivial amount of time yelling "YOU CAN'T KNOW THE GERMAN WHIPERS CONNECT" before spotting the sliver of green connecting r2c3 and r3c2, after he got his first digit

@ServantOfSatania Жыл бұрын

33:51 For me, ironically the biggest hurdle was the sudoku itself after the indicators were done

@frankthompson9630 Жыл бұрын

Same for me! I finished in 36:38 with more than half my total time spent on the sudoku.

@anpruch 11 ай бұрын

Oh, such a great puzzle! I absolutely loved solving it. Did it in approximately 101 minutes, but figured out 1 in the first box sooner than Simon. Such a joy to solve!

@AndrewJens Жыл бұрын

Why wasn't the puzzled called "The Miracle Fog"?

@CrackingTheCryptic Жыл бұрын

Well, it still could be! We could change the video title :)

@nk0058 Жыл бұрын

What a great puzzle! I usually don't understand how to start these but I understood that one had to be the very first digit in one minute then solved the rest in 38 minutes!

@FleursetRebellion Жыл бұрын

Wow, amazing one! I made it through the whole thing in 2 hours (which is an okay time for me) and I only got seriously hung up on the deduction of the 1 in the bottom-right corner. I had to use your video to get the hint on that part, so thanks for that!

@KANPAI666OPPAI Жыл бұрын

45:56 - what an interesting puzzle! Usually I don't have the patience for "marked cell" sudokus, but the logic around the 1st r/c/b numbers and how that works along each row / column and box put some clever constraints on where they can go, and then the interplay between the 36 marked pair at the end allowed for an interesting y-wing relationship between the two unsolved regions of cells to disambiguate the rest of it

@aere481 Жыл бұрын

great break-in. you can see it easier that 1 can only go in the first position because you can't put multiple 1s in rows 1&9 by indexing. I also thought it finished very strongly. Disambiguating the red cells by interactions with just a few whisper lines was very concise.

@noyadishon6649 Жыл бұрын

I LOVE fog puzzles!! Can't believe I actually managed to solve it! (In about double Simon's time, but I'm still proud)

@Urutsini Жыл бұрын

I like that the final solution does have the shaded cells in different places in each box, making Cell 1 in each box different. But didn't need to specify that in the ruleset

@MustBeTuesday Жыл бұрын

I really enjoyed that puzzle! The first part was really fun! I'm very proud of myself that I completed it and only needed one little clue from the video :D

@LeonardLew Жыл бұрын

I had such an absurdly hard time with the sudoku part of this one. Absolutely loved the indexing though ❤️

@Raven-Creations Жыл бұрын

Brilliant, just brilliant. What a hoot to solve. To have a puzzle with no given information except for the rules, and for it to be possible to break in, and for it to have a unique solution was just magical. At the end, I too was left with the red 36 pair, which didn't seem to be resolved by anything. In the end, I noticed that if the one in box 3 were 6, the one in box 8 would also be 6, but I'm not sure if there was something easier I'd missed. Your method was essentially a different manifestation of the same restriction. Blind Simon, the British blues guitarist was in evidence today. When you considered what could go in R7C3, it was a crazy naked single, but you pencil-marked 56, when there's a 6 in the row. You then pointed at the 6, and said "I can't see it". That was stating the bleedin' obvious, as Basil Fawlty might say. You then asked "what is it I'm missing here?" whilst still pointing at the 6. You've been told many times, by numerous people, that you should always look where your pointer is when you're inclined to ask that, because your subconscious seems to know the answer.

@MisterM2402 Жыл бұрын

41:45 for me. Pretty pleased at that, very rare to finish a puzzle from a video over 50 minutes long. I did accidentally see part of Jay Dyer's comment below about the 1s so that gave me a clue as to where to start looking, but I'm sure I would have got there either way!

@MChan75 9 ай бұрын

Took me 85:09 to finish without any hints, which is not that far off the video length, and I'm proud of myself for that This is a wonderful puzzle, and I never felt truly stuck with the subtle hints, props to the puzzle maker

@michielgerretzen9777 Жыл бұрын

Nice puzzle, and even more so, solved it for a change almost as quickly as Simon did 🙂

@hargrim6892 10 ай бұрын

gorgeous setting of the puzzle ❤

@Coldheart322 Жыл бұрын

I like these fog of war puzzles. 2nd one I've done! I think because where you are looking is a lot more focused. Then again, you still have to delve into the fog at times.

@christinalind2034 Жыл бұрын

YEEESSSS Fog of war- I love the joy Simon can make out of a FOW- puzzle. Happy days.

@CrankyOtter Жыл бұрын

This was fun to do. Couple years ago I would never have been able to do a no cells given sudoku. I need need Simon to interpret the rules, but once I got the hang of it it went well.

@muzio_gambit 10 ай бұрын

I actually solved this one by identifying the locations of the marked cells first. As mindblowing as it may be, it is actually possible to prove by contradiction which cells cannot be marked by checking if marking a specific cell would end up yielding conflicting values for its row, column and box "positions". Once enough marked cells have been identified with certainty, the remainder can be found through standard "sudoku rules".

@earlmaudrie8650 11 ай бұрын

I tell you what makes this a lot easier: starting to mark things that CAN'T be a marked cell from the beginning.

@repsforjesus3563 11 ай бұрын

Bit of a painful start for everyone who saw the r1c1 restriction at the start 😵 Absolutely lovely video, though! Amazing puzzle

@juhaloukaja5078 Жыл бұрын

@40:22, box 7 "marked" digit is 5 - marked digits already used 1, 2 and 8, the box has 3, 4 and 9, and row has 6 and 7 so the only option is 5. That would put a 5 in box 1, leaving a 23 pair on the bottom row of the same box, sorting out the 12 in the whisper in box 2.

@gotbread2 8 ай бұрын

The logic in this was brilliant. I liked that ruleset a lot. one of the few i could solve (although i had to take some simon-help here and there).

@Coyotek4 Жыл бұрын

34:03 ... once again, I get thorough enjoyment from solve a 'fog' sudoku Wonderful puzzle!

@wristdisabledwriter2893 Жыл бұрын

I got into the fog thanks to you. I accidentally revealed a fog when trying and I just undid it and pretended not to have seen til I had the not cheating way of finding out. I still needed help from the video thpugh

@PauxloE Жыл бұрын

What I like to do in these kinds of puzzles (where you need to mark some special cells) is to also highlight all the cells which we know are not marked (in this case likely with a light color like yellow in order to not hide the shadow). This helps in remembering what the index cells can't be.

@Stereomoo Жыл бұрын

Pretty happy with getting this done in 1:07, it wasn't easy before or after identifying all the marked cells. I started with r1c1 of course, it was easy to eliminate 2 3 4 5 7 9 but 6 and 8 took me a bit of colouring to be certain of the logic.

@Max16hr Жыл бұрын

Wow, that took me 3 hours but I am proud to be able to solve such puzzles :)) What an extraordinary sudoku!

@kylewollman2239 Жыл бұрын

Brilliant puzzle and brilliant solve.

@wanderlustwarrior Жыл бұрын

40:50 for me. That was fun, and I'm really enjoying these fog of war sudoku with no given light.

@wanderlustwarrior 6 ай бұрын

29:17 ths time for me. MUCH better!

@bchandler8945 Жыл бұрын

I was basically screaming at my phone for that logic behind the Red marked 9 haha, good solve

@danielepicone1480 Жыл бұрын

It is quite funny how the break-in of a digitless puzzle was many times easier than the ending, where you have basically already filled 85% of the grid. Finished in 55m25s.

@michaeldakin1474 10 ай бұрын

I resolved it a little differently at the end, when you’re left with all the 1-3-6 combinations - I looked at r8c2, and discovered that it would have the same value whatever the order of the 3-6 pair in the marked cells, so I went from there.

@EelcoWind Жыл бұрын

Curse you, CtC! I needed to go to bed early tonight because of an early rise in the morning, and then you come at me with a Sudoku with no visible clues at all... Luckily I managed it barely within the hour, but still off to bed too late ^^ This was a very enjoyable one, though. Worth it, I'll just chuck an extra cup of coffee in the morning, I guess :)

@anjaschneider5904 Жыл бұрын

I really liked this one and solved it all by myself! :)

@elric58 11 ай бұрын

It's amazing how he just "sees" some of the most obscure things but routinely misses some of the simplest things! His brain is working on a much higher plane.

@markbennet9058 Жыл бұрын

This puzzle did not break my brain, but for some unaccountable reason I chose to colour the non indexed cells and it was only after a good night's sleep that (being colour blind as well) I saw the sliver of green in box 1 ... . Great puzzle - enjoyable solve, not least for the "look where the cursor is" moment - there are not so many of those these days.

@mikes.8647 10 ай бұрын

"It is outrageous when these constructors make me do Sudoku at early stages of the puzzle, like 40 minutes in". Simon, 2023

@technobecian Жыл бұрын

First “one special cell per row/column/box” puzzle I’ve solved, it was fun!

@Squishy3757 Жыл бұрын

Simon trolling us with his cursor sitting in the 6.

@mousev1093 9 ай бұрын

Very interesting way to break into the 1 in r1c1. It was more of a brute force elimination. I used pretty unrelated logic to get the same break in. Wherever the marked cell in r1 or c1 was, it must be filled with a 1 since it is it's own index which Simon flirted with. If both r1 and c1 need a marked 1 and there can't be repeats, only option is to share it in the corner

@PauxloE Жыл бұрын

I got stuck for a long time in a situation where I got 33 digits in the grid, all marked cells (and digits in 6 of the marked ones), everything but 7 cells (in row 9 and column 9) revealed, and everything fully pencil-marked. After 185 minutes, I decided to watch the video, maybe Simon spots some swordfish or similar higher level logic. And after some minutes of Simon theorizing about entropy, I noticed that I had a 56 pair in the first row which was determined by the position of the marked cells forever. Doh! (What Simon resolved at 38:36.) This allowed me to finish it off. (Ended with a extensive deadly pattern, where a 36 pair of marked cells helped to resolve it. Nice.) 199:22 in total, with solve counter 464.

@AntjedePantje 8 ай бұрын

This is the first one I've done all on my own before even watching the video! I'm kind of a sudoku novice, so I'm very proud of myself, haha

@piarittersporn Жыл бұрын

What a brilliant puzzle.

@shaunholt Жыл бұрын

44:10 oooh this was painful. HOW DID HE NOT SEE IT!?!

@Yttria Жыл бұрын

Lots of fun. Got stuck at the end not recognizing the corner whisper line couldn't have a 3 because of box 6 and bifurcated the 36 marked boxes to finish. (57:04)

@FrancisFjordCupola 11 ай бұрын

59:06 "I got a 16-pair here, so this has become an 8..." said Simon. But at 54:15 he filled in the 8 on the 7th row and if only he'd scanned box 4, he could have seen that 8 could only be in one spot because of Sudoku. Which would then as a knock-on effect give the other eights and clear the far right diagonal green line in box 6. Scanning requires such focus and attention, and it's so easy to overlook. I hope some day, some setter will be naughty and deliver a sudoku that alternates between coming up with a genius deduction and Sudoku scanning to make progress in solving it. I'm mean.

@felis_timon Жыл бұрын

I usually don't do the puzzles but I had to do this one. Solved in 21:49 but I already know that type of coloring and therefore placed the first digit within a few second. There was one thing I didn't want to use but I didn't found anything else so I did use it. I'll find some time to watch the video later. Want to know what Simon did at that point