How To Use Your Knights Better Than Magnus Carlsen!

[@ICHTUES]

Thanks so much for the feature, and also Florian for working on that one with me.

[@d4r4butler74]

Thank you for the puzzle!

[@amoswittenbergsmusings]

Fantastic setting, Fishman!

[@G4M1L]

Is your username a deliberate play on words? I (as a German) read your name as "ich tu es" = "I do it", not as "ichtüs" - homophone to "ichthys" = "fish"

[@inspiringsand123]

Rules: 03:09 Let's Get Cracking: 04:10 What about this video's Top Tier Simarkisms?! Cooking with Gas: 1x (18:37) And how about this video's Simarkisms?! Hang On: 6x (25:02, 31:31, 34:22, 35:54, 35:54, 35:54) Good Grief: 4x (11:27, 21:53, 23:37, 29:17) Clever: 4x (06:52, 11:30, 30:20, 38:55) Beautiful: 4x (01:36, 10:01, 11:37, 35:45) By Sudoku: 4x (21:58, 22:00, 32:43, 36:05) Wow: 4x (13:46, 19:15, 22:30, 25:06) Syzygy: 3x (06:56, 06:56, 09:23) Gorgeous: 3x (20:53, 34:22, 35:36) Obviously: 3x (02:43, 06:41, 12:07) Secret: 2x (04:37, 04:42) Stuck: 2x (08:17, 24:31) Brilliant: 2x (39:01, 39:04) Deadly Pattern: 2x (36:22, 38:03) Famous Last Words: 2x (26:10, 32:58) I've Got It!: 2x (16:19, 16:19) In Fact: 2x (02:50, 39:46) Useless: 1x (28:52) Sorry: 1x (03:45) The Answer is: 1x (15:51) Out of Nowhere: 1x (25:08) I Have no Clue: 1x (25:37) Lovely: 1x (17:57) Elegant: 1x (31:28) Ridiculous: 1x (36:10) Oh It Can!: 1x (34:15) Approachable: 1x (01:38) Of All Things: 1x (36:05) Magnificent: 1x (39:57) Whoopsie: 1x (12:15) Sudoku in a Sudoku Puzzle: 1x (36:08) Most popular digit, number(>9) and colour this video: One (101 mentions) Fifteen, Seventeen (4 mentions) Blue (16 mentions) Antithesis Battles: Even (4) - Odd (0) 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!

[@smylesg]

What about when they call themselves out by name, as in "c'mon Simon"?

[@smylesg]

How about forms of "malign"?

[@FlorianWortmann]

Meeting a fellow setter in real life was so cool, as well as working together on this puzzle. So nice to see it featured :-) Edit: What a lovely solve. You made my weekend, Simon. Thanks for the feature and thanks to ICHTUES for the fun collab.

[@d4r4butler74]

Thank you for the puzzle!

[@limecows]

Beautiful puzzle. Well done.

[@sampathkumar-ej7xl]

A very clever puzzle with the way the arrows worked with the cages given the chess knight moves. Very satisfying solve.

[@violetfactorial6806]

that 6 in box 5 was there for the taking for so loooooong... (starting at 25:15) Fun as always! This puzzle was a little too hard for me today but I enjoyed following along with the solve. It's a good one :)

[@rachelrose7027]

I was staring at that for ages

[@mareksroka5629]

I was screming at my screen as well. It was as if Simon was trolling us. The 69 and 67 in box 2 would have been resolved in an instant. And of course, he eventually resolves everything, WITHOUT using the obvious knight move

[@lmelior]

I was sending very strong brain waves into the past to look at that for a very long time and he did not receive them.

[@irvin334]

Inspiring Sand posting the timestamps faster than Nepo's Bishop to a8 move in Game 2

[@HunterJE]

Looking so hard for a knight's move at the end to resolve the 5s, 6s, and 9s when plain old sudoku would do the job twice over (6 in row 7, 9 in row 8)

[@CursesVision]

O̶c̶c̶a̶m̶'̶s̶ ̶r̶a̶z̶o̶r̶ Simon's (multicoloured) razor: Why place a 6 by sudoku (of all things) in the simplest possibly way when you can create a chromatic masterpiece that would put mosaic artists to shame, to place the same 6? Never change, Simon!

[@i7521]

up north we've been really facing the consequences of the storm. multiple friends in car accidents, almost everyone I knew couldn't get home, fences broken, windows smashed, total chaos. a lovely cracking the cryptic upload always makes it nicer though :)

[@amoswittenbergsmusings]

Wishing you minimax of damage and peace of mind.

[@raistlin_dourden]

"The triangular number for 6-1 is 20" is a great shortcut, Simon. Thank you so much.

[@coffeedude]

I just have to remember the triangular numbers now

[@sadassadas8946]

I'm always excited when Simon misses some easy sudoku plays because I know it means he'll find some other, sometimes more convoluted but always stunning, logic to get the same answer.

[@timcotton1782]

The 8 in R7C7 was the first thing I did. The two cells of that cage which are outside of box 9 also have to exist inside of box 9, meaning 8 cells of box 9 also equal 37, meaning that both those two digits also = 8, which sets the arrow circle.

[@stevieinselby]

I'm not convinced by that. You could have had the arrow as ⑨=8+1, with 9 and 1 in the tail of the cage in box 8. All you know is that _one_ of the cells in box 9 that isn't in the cage is an 8, and the other two are in the tail of the cage. (Obviously there are _other_ reasons why that arrangement doesn't work, but you can't rule it out at the start)

[@Lockemenos]

@@stevieinselby Yeah, I discovered it had to be an 8 in the circle because a 9 in the circle places too much pressure on the three cell arrow in box 6. You rule out 9 in the circle in box 6 by sudoku, and the arrangement forces a 1 off the arrow, and you can't make 6 or 7 without a 1

[@CroixMedia]

I did the same after restricting the 1s in box 6. I noticed that the two cells in the 37-cage outside box 9 have to be found in the arrow in box 9. If the circle has a 9, then those two cells are 8 & 1, with the 1 in r8c8. By knights move, r9c6 sees 1 & 9, which with the 37-cage, rules out any legal digits for that square.

[@laufsteakmodel]

imaging watching a ctc video and thinking to yourself. oh 40 minutes. a short one today

[@Raven-Creations]

"Now we're properly getting stuck" - except instead of all the shenanigans you've just done about the outies of the 37 cage, you've missed that there's only one place for 1 in box 9, which would have made the outies 1 and 7 without needing to pencil-mark them. I keep telling you Simon, sudoku is your friend, and it's been very good to you. Don't treat your friends like this. Just after this, you pencil-mark 346 into a cell seen by a 6, then say you're stuck again. If you had looked _before_ you pencil-marked, you'd have realised that the cell was a 34, giving a 34 pair in box 5 and allowed you to place the 6 in the box, which would then have avoided the need to pencil-mark 69 and 67 in box 2. Even after later identifying the 346 as purple, and therefore 34, you _still_ didn't remove the 6, or place the 6 in the box. You also had purple and blue in row 3, with the only other cell being 346, but you didn't mop up. This is why we shout at you.

[@derekjc777]

Not to mention the 9 in row 8 at the end! I’m sure Simon could have knock 10 minutes off his time if his scanning was better!

[@alarictaqiarentza9451]

23:34 solved for me. Very nice use of the 8 as a digit and as a sum in the start of the puzzle. Coloring the 3/4 is also lead to some very interesting logic. I really enjoy it!

[@nightwishlover8913]

Genuinely approachable? 40 minutes for Simon? "What we got here is a failure to communicate..."

[@glennmelven3414]

What a great Anti-Knight puzzle. The Knight's restriction was used very well in the construction of this puzzle.

[@jeffreyblack666]

30:00 you could figure out it had to be a 3 long ago, around 27:00. When you placed the 1 pencil marks, you know it needed a 1 or 2. If it has a 1, the only digit it could also contain is a 2, as it can't be 3,4,5,7 or 8. And 6 is ruled out as the total would be 7. Then with the 2 which must be there, you could only have a 1, as it can't be 3,4 or 7, and the total can't be 7 or 8 ruling out 5 and 6. 38:00, yes, a deadly pattern where you have a cell that could be a 5 or 9, and 3 cells to the right there is a 9...

[@AdamGaffney96]

I very intensely follow chess and I'm not gonna lie, I missed this video initially because my sub-box is so full with chess currently. I only noticed cause I was like "wait did CtC upload a video today?" after watching 8 hours of chess.

[@SmartHobbies]

KZbin recommended it to me as I was looking for Agadmator’s latest video.

[@jasminedavis6686]

Now that is a dedication I can admire

[@Socialdogma]

Same with me. Damn that Danny Rensch and Daniel King!

[@Coyotek4]

24:10 ... I very much enjoyed this one. Nice puzzle! [Unrelated ... I'm going through the puzzle hunts in the CTC book; any hints on what to do with the 7-digit number at the end of one of them? (I prefer not bothering with things like Discord; I can never get them to work properly on my computer.)]

[@rewolff2]

Hey Simon. I've thought of an even simpler way to explain phistomerfel (and related set-thingies). Say: "We're going to select a set of the digits 1-9 in one color". Select box 1 in orange. Say: "No we select a different set of the digits 1-9. Select row 1 in blue. Now we cancel out the cells that have both orange and blue. So... we're left with these two colored regions and what we know is that IF a digit, say three is in the orange region, THEN it will also be in the blue region. And the other way around, if say four is NOT in the orange region then it is also NOT in the blue region. And we can continue doing this. Add another box, add another row and cancel the dual colored cells." When explaining the ring, then you start out with say box 1 and column three. When explaining the alternative version (with the corner boxes moved inwards) there is always the issue with the cells counted twice. This is completely avoided if you do it incrementally like this. Hmmm... You will have to start cancelling out before you add the next blue for this to work.

[@awilliams1701]

as a programmer I read the name as "not discord" since a preceding exclamation point is a not operator in most computer languages. lol

[@amoswittenbergsmusings]

I know tht feeling. As a .NET afficionado *and* a big music addict, I experience a double-take every time a piece in C# is announced.

[@David_K_Booth]

I think it was deliberate. But I only know four or five languages, not most of them. ;)

[@longwaytotipperary]

Wonderful collaboration!

[@Gonzalo_Garcia_]

19:50 for me. Lovely idea, no big revelation for the break-in but a really enjoyable solve over all.

[@johnsouza4391]

Amazin more than 6 minutes after 6 in box 6 could have resolved entire column 5 and all 346's in area.

[@AvatarBowler]

Or the 5-7 pair in box 6 because of either the 6-7 pair in box 3 _OR_ the 7 on the arrow in box 9. I swear, as great as CTC is, this channel has taught me to always be on top of scanning. 😂

[@geoff544]

23:14 The 8 arrow in box 9 being disambiguated at this stage helped me - the arrow tip cannot be a 3 or a 5 as they would have nowhere to go in box 6.

[@CMLachky]

Great Puzzle!! Cool logic.

[@boydegg]

79:43 ... what a beast!! I had to refer to the video for help more than once

[@th.nd.r]

Such a nice puzzle!! So many cool deductions. Great job to ICHTUES and Florian on the setting and Simon on the solving! Yay for sudoku friendship :)

[@russellbarnett7606]

Interesting to see Simon’s solve path. I had to color 34 pairs to crack the puzzle and it fell into place quickly once I determined that r8c1 was a 3. He started coloring those much later in the solve than I did.

[@alexanderb.3798]

Me: "Hmm, at this point I could solve it by just using Sudoku rules " Simon: "Hold my beer"

[@arlothe_ariel]

Simon, my dude, seriously, new video now? i REALLY need to vacuum before my mum comes back home :(( naaah, it can wait can't it

[@amoswittenbergsmusings]

I now regularly postpone washing up the dishes until after midnight. On stream nights it becomes a real-life problem 😍

[@jessy8974]

This is one of the most original click-bait titles of a video i've encountered on youtube :D but a great video, as always, top quality content, thank you

[@letitiacaspersen9344]

I loved the video, and I had a lot of fun solving this puzzle! I do think the timing of the tittle is pretty funny because Magnus's biggest mistake in his game this morning was a knight move.

[@G4M1L]

No idea what part of the puzzle you did, ICHTUES, but you did it well! (For all non-German speakers, the name translates to "I do it" or "I'll do it".) Compliments to Florian and you.

[@del7511]

Simon, could I ask that you don’t use blue and purple together quite so much? Not so very easy for the colorblind.

[@penningmeestercgkdelft9159]

Yes, indeed... But apart from that, it is a quite enjoyable solve again!

[@domoniche1]

I screamed at the 6 in box 6 seeing the 346 cell in r6c6 for good half of the video. And in true Simon fashion, he glosses over it and solves it anyway with some other higher-tier strategy

[@Sergi4]

Beautiful puzzle

[@happydommo]

God bless the KZbin algorithm that popped this video into my feed today... What a great little puzzle...

[@stevieinselby]

There was a lot more that you could do with the colouring! Full disclosure: I had to watch a couple of bits of the video because I got stuck, so I certainly can't claim to have solved this one better than Simon did, but I'm pleased to have spotted a couple of things he didn't! First of all, I did the colouring in boxes 8/9 straight away, literally the first thing I looked out. When you know that an 8️⃣ goes somewhere on the arrow set in box 9, what happens if you put it in r8c8? It puts a 1️⃣ into r7c8 and makes the circle into a 9️⃣ ... but on the arrow in box 6, it now rules out a 1️⃣ from that arrow making it 2️⃣+3️⃣+4️⃣=9️⃣, which clashes. And the arrow in box 9 can't be 3️⃣+5️⃣, because where do you put 🟩 in box 6? It can't go in any of the unclaimed cells, so it _must_ be one of the digits you've already written into box 6.

[@wanderlustwarrior]

55:51 That took me longer than I thought it would. But, when I decided wasn't going for time, I did make sure to color everything the appropriate color!

[@wanderlustwarrior]

39:10 this time, much better!

[@smylesg]

19:28 Finally! Simon noticed he has a habit of entering digits one digit away. Well, acknowledged it anyway.

[@1FrostySlime]

I was screaming at my phone for like a solid 10 minutes that row 6 collum 7 was a 7 , I don't think I've ever been so anxious to watching one of these videos then I was waiting for you to notice that

[@meljansevanrensburg]

No knight is better than THAT knight on d6!!!😂

[@GraveyJones86]

Got stuck a few times but I finally got it in a bit over an hour. Excellent puzzle!

[@Bonar09]

Just above 30 minutes for me, which is the "I'm still having fun" kind of challenging - great puzzle!

[@maxpricefield7586]

clicked on this without reading much and was anticipating Agadmator's "Hello everyone!" but this is nice too

[@lazprayogha]

Wait i thought this was a chess videos until i saw 9x9 board.

[@Stephen-Fox]

12 puzzles in 2 hours - consider how many sudoku you can do on camera in 2 hours. Even before the channel swapped to doing incredibly difficult ones, so the 2-3 star difficulty puzzles you used to typically tackle and spent about 20-30 minutes on most. In a 2 hour sudoku stream back then, with comparatively easy puzzles, you'd have been solving around 4-6 per stream. Baba is You, by the point you are in the game, is a lot harder than the GAS Mark is able to rattle 5 off in around 30 minutes. Just because you're not putting in pencil marks doesn't mean you're not making progress.

[@yagmurtoparlak132]

another way to place the 8 in box 9 is this: we know r7c7 can only be 8 or 9 but 8 definitely exist on that arrow or its circle. we also know the 2 cells that belong to the 37 cage in box 8 have to be on that arrow or its circle as well. if we try mapping them, we see r9c6 can only map to r7c8, meaning that cell can never be 8 because of the 37 cage. we also know that cell cant be 1 because theres definitely a 1 on the arrow in box 6. meaning if we put a 9 in r7c7 we have nowhere to put the 8 in box 9. sorry if this is a weird way to explain it or if it makes it sound complicated

[@francoisduez601]

32:09 Nice puzzle 🙃

[@six_5000]

these are the ideal kind of puzzles for me... tougher than a simple gas but easier than the phisto-aad-clover nightmares that simon often does

[@miscbits]

I love watching Simon refuse to do sudoku in his sudoku puzzles for as long as possible. Gotta use all the fun special rules first 😤

[@BrooksMoses]

Oof, that was a challenge! I got it done in 88:53, but I had to get help from Simon twice -- once to figure out what to do next when I got to where he is at 17:50 (he resolves the 8 in box 3), and once at the end because i had unresolved 56 pairs and couldn't see the logic he used at 35:15 to resolve the 6 in box 8.

[@stumbling]

Pleased to see Simon doing the same colouring as I did.

[@s.k.fantoni4640]

I watch/listen to these videos to help me sleep and tonight (3:16AM) my cat Ted is desperate to jump in on the action. He's settled on the pillow next to me and seems very irritated that I've paused to type this comment in lol

[@mratkovich]

I figured I yelled SIIIIIXXXXXX enough that prerecorded Simon just might have heard me

[@drumcrazy100]

This is probably the hardest sudoku I've solved.

[@xvnz]

Quite a different approach compared to my solve. I didn't even consider the interaction of the 7 and 9 arrow. I figured out that the arrow on the right is a 9 arrow and a couple 8's and 1's. From there I saw that the 8 and 17 cage need different pairs that add add to 7 so I used coloring to go on. I didn't solve the 8 cage until I got the 2 on the 3 arrow.

[@hom-sha-bom]

At 11:43 he says you can't put 1 & 5 on that arrow because it doesn't allow you to put a 1 in the 8 cage. Can someone please explain how? Why can't you put a 1 in R3C2 & R5C3? Those cells are not in the same row, column, box, or killer cage. He does have the 1's pencil marked in row 5 already, but he didn't give any explanation for why he did that other than he just said you can't put it on the arrow in box 4. But why can't you?

[@GLogic]

Not sure if you figured it out or not but the 8 cage needs to have a 1 'cause the only way to add to 8 w/ 3 different digits is 125 and 134 (both containing 1s) so a 1 has to be in the cage and therefore ruling out a 1 from the arrow by Sudoku + knight's move.

[@sandraraituma]

Its so funny, I couldn't solve this puzzle to save my life, but I can notice some interesting things that would help to solve it :D Like cell r7c8 cant be 8, because the cell r9c6 cant be in the 2 other empty cells in box 9 by knights move. So it has to go there. And if it can't be 1 as well (as we later find out), the combination on the arrow cant be 9=1+8 - Because r7c8 cant be either 8 or 1. So 8 must go in the circle.

[@swivvy3037]

Now that's a clever video title 👏

[@MikeMarlinTube]

It took me far longer to solve than Simon ... but I did spot early in the solve that the 8 could be placed in R7C7 by using Phistomophel because it is the only place an 8 could go in the ring, and the alternative would have placed an 8 in the outer 2x2 box - and there would have been nowhere to put it.

[@smylesg]

32:05 Sooo glad he didn't use the 67 pair in box 3 to resolve the 5 and 7 in box 6. That would have been very Simony.

[@josephrion3514]

The knight clue is determine where the six is in the middle box about 25 or so minutes in. Which resolves box twos 69 and 67 they can't be sixes. Since they see them in the column. He's training me to have a good eye for this.

[@josephrion3514]

He actually solves the 9 and the 7 without ever seeing the six. But I've seen these things before where hell solve something by coming at it from a different angle usually not as easy or elegant but that's just his luck and mental fortitude.

[@josephrion3514]

I'm drowning, he solves it by figuring out the one next to it is the purple 34 and the one above it is a blue 34, and not the knights move at all.

[@xnisfuzzy]

A little over an hour for me. Had to run away from my computer for a bit and forgot to pause, so didn't get a fully accurate time. Definitely struggled with this one, but got very excited when I finally finished that I ended up scaring my coworker a little.

[@quentinwolfe2302]

9:30 - I bet Phistomefel could make those add to 20

[@BozoTheBear]

There was another way to figure out where the 8 in box 9 goes. If the 8 was on the arrow, then the arrow sum is 8+1 = 9, and because of the 1 on the middle row of box 6, that forces the 1 into the central cell of box 9. But now it's impossible to fit both 1 and 9 into the big 37 cage!

[@srwapo]

61:31, wasn't as difficult as my time suggests, I was cooking dinner at the time.

[@lukaszpiotrluczak]

Nice dolve but Simon needs to fix scanner because it is not seeing obviousnesses :)

[@samplename5159]

I got everything up to where Simon was at 17:50 and got utterly stuck. My knighthood was revoked.

[@amoswittenbergsmusings]

Lost for words, Simon? What happened to your stock of superlatives? This was a great puzzle, not out of reach of this old geezer, after his thorough schooling at the CtC Academy of Daily Delights. I was rather pleased with myself when I resolved the arrow in box 9 by proving that R8C8 must be among the digits I already placed in box 6: 9-126 on the arrow and the 8 in the top-left corner of the box. It therefore had to be a 1 and that was my signal for the endgame. I also resorted to 34 colouring which was at that point well nigh mandatory. I am getting the hang of this game, I think. Thanks, Simon and friends!!

[@cameronccfffcc4226]

Yes I finally done a puzzle exactly like Simon before viewing his solution, even used the same colours 😂

[@gerdkah6064]

25:17 - 35:17 ... 6 in r6c6 survived (knightmove-)scanning for 5 minutes ^v^

[@Zacht1980]

I also think a 2 looks a lot like a Knight's piece in chess. Notice how many 2s you entered using knights move restrictions? Coincidence?

[@davidh.4944]

As much as I love sudoku in general, I hate this kind of frustrating puzzle-ones that look fairly straightforward at first, but then rely on searching out some obscure little bit of reasoning before you can advance. I struggled for over 90 minutes on the 79 pair/17 cage combo to see if I could break it open, but didn't get anywhere. I finally resorted to checking the video, up to the point where the 8s were resolved. Then I worked on it for close to another hour to finish the thing, only to check the ending and find out I'd gotten the solution wrong. Not at all a satisfying solve.

[@dinodinosaur]

THE SHADE

[@spudd86]

I would like to watch the Baba Is You streams... but I want to play it and you're way further in than I am.

[@stevenlacrosse4876]

17:56

[@CrypticCL]

I thought I'd found an error - I got all the way to the end. Hit the 'check' button and it said, "Yey! Looks good to me" ...but then I saw my solution was different to Simon's!! Turns out my solution had one digit accidentally a knights-move apart.... but the software doesn't know to check for that.

[@NFSHeld]

Who else was biting their nails from 25:18 onwards, on whether or not he'd spot the 6 constraint?

[@studgerbil9081]

It's simple: Simon cannot see 6s.

[@laurv8370]

"I don't know which one of you two was thinking to that" - actually... I could bet that none of them :D. You always chose the complicate way :D

[@abj136]

I’ve concluded i just don’t like Knights move rules. They always make the logic too tedious for me to solve.

[@ChocolateJesii]

We know by sudoku, but let me see if I can "double prove it." 🤣

[@crystalgehrt8861]

Fun!

[@dwarfigplays9806]

That was hard! 1:15:37 for me.

[@flyboyb29]

your only getting stuck with the 8 in box 9 being a 1-7 cause you wont scan your rows and figure out where one goes in box 9

[@CentralScroootinizer]

Crazy that Simon doesn’t color anything until 24min, but it was the first thing I did, before getting immediately stuck…

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

33:55 for me.

[@Yasen6275]

Is there a championship for bad sudoku scanning?

[@LednacekZ]

46:30 for me. quite hard

[@cablebee8790]

Is anyone else getting contradictions with 5s? I don't know what I am doing wrong, I keep getting 5s that are impossible. :(

[@adrianhead6272]

Simples! Completed in 27m13s.

[@stumbling]

suduoku :P

[@ardemus]

I'm learning that "approachable" is only for god like solvers. You apparently don't have mortals to try these things out and give feedback. This was not at all possible for me, and watching the video didn't give me an aha moment to change that conclusion.

[@olivier2553]

Nice solve, but over thirty minutes, it is not really accessible :)

[@fangas47210]

Simon you should keep a close watch after Mark, He has taken the booster not feeling all too well. The boostershots often turn out to be lethal

[@Archik4]

I have solved it.

[@laufsteakmodel]

plz stop putting blue and purple next to each other. most of us with colorblindness dont see a difference

[@topilinkala1594]

Get new glasses!