Sudoku on the Bleeding Edge

[@18lolable]

19:40 this seems like an incorrect deduction, because one of the oranges could very well be 6 and be on the place of the yellow in box 5. If you try it, it quickly breaks though because that arrow would be 612, leaving R4C4 to be a 3 and a 3-8-3 whisper. This means R4C6 and R6C8 cannot be 3's anymore and R6C7 can't be 6 either, so there is no possible option left to sum to 9.

[@BremSterPuzzles]

This is the spot that is important and really ramped the difficulty of this puzzle up. The way the arrows that Maggie put into the puzzle took me ages to understand, and when I did I was able to put some finishing touches in and make it all work. The central shape she put together was tough, but I loved it.

[@YonatanZunger]

Interesting - I reasoned it a bit differently. The 6 and 3-8-3 force r1c4 to be 7, forcing r1r2c3 to be a 12 pair, forcing r4c3 to be at least 4, forcing r4c2 to be no more than 2, breaking the renban.

[@MateiGall]

I don't see why r6c8 can't be a 3, but the reason mentioned by @YonatanZunger is obvious.

[@huxflax]

Thank you for such a great explanation 🙏 @18lolable

[@BremSterPuzzles]

The reason the puzzle was called Bleeding Edge was because we thought the central part of the grid looked like a Fidget Spinner, with three of the sides in green, and the pink one was the "bleeding edge". It's a bad pun, but that's the only type we know.

[@srwapo]

I assumed it was a shuriken that has already cut into somebody. 😆

[@easternbrown]

It is a very pleasing puzzle aesthetically. The empty grid catches the eye, and the solve has some very smooth deductions.

[@Timlagor]

Somehow I'd got the impression you were a nice person Bremster ...this was monstrous. Clever but so evil!

[@AaronSmith-i8y]

52:52 How was 1 knocked out of R3, C9? It still seems the renban can be 1234 as the smaller arrow can then be 4,3,7 when read backwards. This leaves 5 in the center of box 6. I was impressed by the deduction about row 4/6 containing the identical arrows as that part was valid but I see what others are saying about not knowing that they were necessary 126.

[@raghardeishi972]

It's simple. It depends on square directly under it. And you restrict value of that square by finding position of 3. Mark was so disoriented by all these phones and visitors he kinda skipped that part.

[@markbleyerveld8407]

But the renban could still be 1234

[@raghardeishi972]

@@markbleyerveld8407 It can't, solving R4 C9 by restricting R3 C8 forces it to be higher than 1.

[@AaronSmith-i8y]

Until 55:00 the 1 has two positions in boxes 3 and 9 forming an x wing in C7, C9, R3 and R9. The naked single 5 Mark gets after adding 9 to row one finally forces 5 onto the renban in C9. I still don't see an answer to the question before that moment though.

[@Paolo_De_Leva]

@@AaronSmith-i8y I agree on the following points: 1) *5* on the renban rules *1* out of it. 2) There is no way to lock *5* on the renban without first spotting the naked single *5* in *row 1,* as shown by Mark @55:00. However, be careful because before 55:00 Mark obtained a lot of information based on his _"lucky logic mistake."_ If he had solved without that mistake, he would not have been able to pencilmark the *4-5* pair in *box 9.* Hence, after spotting the naked single *5* in *row 1,* you cannot use that *4-5* pair to immediately force *5* onto the renban. You need to proceed with sudoku until you manage to do what *@raghardeishi972* cryptically explained above. Namely, you lock *3* in *r1c8,* wich restricts *r3c8* to *r3c8* = either *2* or *4* and, by arrow logic, rules *4* out of *r4c9,* forcing it to be *r4c9 = 5*

[@peaoui165]

19:54 - logic breaking deduction. Yes there are 3 oranges left to put in box 5 but you LITERALLY JUST SAID there's an overlap with yellow. You don't have to place 2 of the oranges into row 5 as r6c4 is available

[@hcabuk01]

If you place 6 in r6c4 and continue with the puzzle, it breaks down after a few steps.

[@Petrus74-yj4kv]

@@hcabuk01 It's true but that doesn't change the fact that Mark made a wrong assumption there as he didn't actually demonstrate that R6C4 cannot be orange.

[@amadahn1029]

Mark at 18:40 - I must not forget that 6 can be in both orange and yellow Mark at 19:40 - *Immediately forgets that 6 can be in both orange and yellow

[@michaelmatter1222]

Superb puzzle, great design plus awesome logic is hard to achieve!

[@chocolateboy300]

I finished in 65:38 minutes. This was a tough puzzle to crack. I had a lot of fun on the middle arrow, then it got harder. I was able to slowly make progress with some clever pencil-marking and was even able to get a couple cells that were always the same number. I was finally able to crack in in column 3 by having a 1 always forced into column 3 of box 1. This gave me enough power to unwind the arrows. That felt super tough to see, but it felt so good to have finally cracked it. Great Puzzle!

[@huxflax]

Oh, good break in!

[@huxflax]

Or break through rather...

[@orlyyyy1]

Such an interesting puzzle! I read some of the comments about the logic about orange cells in box 5 and they're true. but putting a 6 in R6C4 will break the puzzle. I actually thought about that option when Mark made this deduction (I start on my own and come to the video when I'm stuck). My "yelling at the screen" moment was when Mark started coloring the 12 cells and stopped before he noticed that in R4C4 there can't be a purple cell, pushing it to R4C2, so the beast mode could have started earlier.

[@BremSterPuzzles]

I don’t fault Mark for skipping the 6 elimination in r6c4, I did this in my first test through after Maggie created the central part of the grid; it’s really easy to do.
The break in as built is focused around the effect of the 123 triple in b5, and the power it has through the GW lines; which as Mark explained have to be a triple or you have issues with the arrows. If r6c4 is a 6, you end up with the arrow under it being a 12, forcing r4c4 to be a 3, making the GW line it’s on become the 8, and therefore r5c7 becomes one of 67, this means that r6c8 can’t be a 3, and you have a 12 pair in r6c68; which means that r6c7 would have to be a 6; but this was all started with r6c4 being a 6; and two 6s in r6 is a no-no; so that eliminates 6 from r6c4.
Now, because you can’t put a 6 in r6c4, that arrow in c4 must have a 3 on it, because if it doesn’t it’s 12 and needs the 6, which we just eliminated. So that removes the 3 from r4c4, which removes the 8 from r3c5 and… stuff starts happening from there with the 123s.
 This is not an easy spot, this break in from Maggie is positively amazing and it took me ages while we were creating it to understand what she was doing.

I hope you all enjoy the puzzle even with this slight mess up; we all do them, but when a camera is pointing at you, everyone gets to see it.

[@Paolo_De_Leva]

I did enjoy this stratospherically clever puzzle and your explanation of the intended break-in made it even more fascinating. Thank you. By the way, people also need to be explained how to rule *1* out of the renban in *column 9,* because Mark did it with incorrect logic. That was discussed in the thread opened by *AaronSmith's* comment.

[@whelmking6497]

As others have said, the deduction at 19:30ish is incorrect due to r6c4.. unfortunately this means the solve is just luck. First time I've seen an invalid solve on this channel. Also, this is exactly where I got stuck in my solve, and now the video here is of no help (for the first time)!

[@renedekker9806]

The way I resolved it: give the 123’s their own colours. After some manipulation, you’ll discover that the two horizontal arrows must be the same composition. After that, due to the way the 3 forces the 8 around, the 3 can only go in r4c6. That forces the horizontal arrows to be both 126.

[@renedekker9806]

Mark’s break-through at 36:00 is unfortunately also based on the incorrect earlier deduction.

[@allendracabal0819]

If you consider a faulty deduction to automatically produce an invalid solve, then this is certainly not the first time it has happened on the channel.

[@adrianhead6272]

@@allendracabal0819 Especially from Mark... he gets lucky all the time.

[@denagh823]

I wound up getting that the end of the arrow (r4c2) had to be a 123, then with the pink line passing through that cell meant that the highest value for r6c4 was a 5. At that point, we can only put two high digits in row 5 and not column 5.

[@piarittersporn]

Very beautiful puzzle.

[@titusadduxas]

1:27:39 - Phew - It took me the best part of an hour to get the 2nd digit!, but thankfully it wasn’t too bad after that!

[@brachypelmasmith]

wow. This one was horrendesly difficult

[@praematura]

I had the pleasure of doing this a while back, and really loved it! Somehow found it a bit easier than Mark, was able to finish in just 24:11 (conflict checker off). Many thanks to BremSter and Maggie for this amazing puzzle!

[@Captain_Insano23]

Well done Puzzle Boy

[@emilywilliams3237]

I am always happy to see you have the opportunity to get into beast mode, Mark! Thanks for this video, and for taking the trouble to record over the Christmas holiday season! It is much appreciated, truly.

[@Michaelzehr]

I just barely came in under an hour, but my solve was not at all elegant. I went through a lot of sequences that broke eventually and definitely didn't not test combinations in an efficient manner.

[@Trottah]

Interesting that all 5 circles were 9, and that all the 2-cell arrows contain the 4 ways to make up a 9 with 2 digits. Nice puzzle, I found it easy to restrict the digits but hard to break through and place them.

[@FrancisFjordCupola]

Isn't it going wrong at around 20:10 ... Mark wonders if he can put in two oranges... and by sudoku he could-ish. Thing is yellow is 4-6 and orange is 6-8. Among oranges and yellows there hides one six. So in each box, row and column one orange must be mixed with yellow or vice-versa.

[@Gonzalo_Garcia_]

16:29 for me. Fun puzzle!

[@AWanderingSwordsman]

39:31 for me. I feel like I kind of brute forced part of the break in to determine the location of the red 6 and 7.

[@tBagley43]

1:23:45 break in was pretty fun but the end was annoying, unless I missed something obvious

[@inspiringsand123]

Rules: 02:04 Let's Get Cracking: 03:19 And how about this video's Simarkisms?! Ah: 6x (11:17, 12:02, 15:23, 22:30, 23:16, 47:20) Sorry: 5x (12:54, 20:53, 33:14, 39:14, 55:50) Clever: 5x (03:00, 03:08, 37:25, 38:41, 57:22) Goodness: 4x (36:41, 37:39, 38:37, 47:20) By Sudoku: 4x (08:55, 49:42, 50:38, 54:01) In Fact: 4x (06:52, 28:59, 40:51, 51:36) Obviously: 4x (00:43, 03:04, 09:36, 34:26) Symmetry: 4x (02:53, 02:56, 23:19, 27:14) Pencil Mark/mark: 3x (17:41, 26:06, 48:19) Weird: 3x (44:01, 48:16, 52:09) Lovely: 2x (08:26, 08:59) Hang On: 2x (19:55, 22:18) Intriguing: 2x (00:16, 00:52) Progress: 2x (44:34, 51:22) Wow: 2x (21:53, 37:25) Bother: 1x (20:44) Naked Single: 1x (55:02) The Answer is: 1x (12:32) Nonsense: 1x (39:30) Home Straight: 1x (54:10) Bingo: 1x (20:24) Deadly Pattern: 1x (56:19) Bizarre: 1x (20:29) Flurry of Activity: 1x (51:15) *****ing: 1x (39:39) That's Huge: 1x (38:14) Middly Digit: 1x (11:45) Most popular number(>9), digit and colour this video: Seventy Eight (4 mentions) Two (113 mentions) Blue (44 mentions) Antithesis Battles: Low (15) - High (12) Even (5) - Odd (3) Higher (2) - Lower (1) Column (16) - Row (12) 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!

[@LabanMitchell]

Thanks for sharing such valuable information! I need some advice: My OKX wallet holds some USDT, and I have the seed phrase. (alarm fetch churn bridge exercise tape speak race clerk couch crater letter). How can I transfer them to Binance?

[@TurquoizeGoldscraper]

21:16 for me - I was looking for patterns and I tried just sticking a 2 in one place to see what would happen, and it solved it.

[@timvermeulen4024]

Good effort, though quite a bit slower than my 0:10 solve - I tried scrolling to the end of the video to see what would happen, and it gave me Mark's finished grid!

[@chrislambourne4275]

The 3 in box 8 sites there for at least 10 minutes,which then opens up "beast mode." Meanwhile, I am getting annoyed.... and still waiting for penny to drop in his solve.

[@wanderlustwarrior]

1:30:53 for me. Yikes. I really shouldn't be doing these so late at night.

[@MarushiaDark316]

Poor Mark, getting so many interruptions. :(

[@robertcousins2274]

38:00 for me

[@megaminxpll]

I remeber this one about a month ago, did it in 21:12 back then.

[@bruceh8043]

34:30 for me and solver #2231.

[@Ardalambdion]

Annoying people that can't respect a good sudoku solve.

[@bethanyhunt2704]

Not a good idea to have two different colour schemes going at once!

[@AndreAy1975]

Solved it without help from the video.

[@blomster4304]

Two solves via incorrect deductions in 5 days from Mark? (The other being the Xmas 7/8 puzzle), shape it up...

[@malvoliosf]

The “ch” in “chutzpah” is pronounced like /x/, like the Scottish word “loch” /lɔx/. If you don’t feel confident saying it that way, you can pronounce it /h/ like “horse” /hoɹs/, but pronouncing it /t͡ʃ/ like “chum” /t͡ʃʌm/ is so wrong, it’s practically antisemitic.

[@minamagdy4126]

(to original commenter. I won't address the other stuff, not because it isn't important but because I wish to address the linguistics more) I didn't know that the "ch" is pronounced in the Greek fashion in these Hebrew loanwprds (many Greek loanwords have ch to represent the letter chi, which is often/always? pronounced /x/). My own native Arabic usually goes for "kh" instead when transliterating the equivalent letter, as does the Coptic that I know (at least for the native letter khori. The Greek-origin chi is more complex). I do agree that "tsh" is inappropriate, but I've always pronounced it as "sh" since I didn't know any better (can't find the IPA symbol, sadly). I wouldn't outright accuse them of antisemitism, as it seems more to stem from naïvete, but I understand your concern, as similar matters irk me greatly.

[@malvoliosf]

@@minamagdy4126 That accusation was meant in a wholly jocular fashion!

[@emilywilliams3237]

@@malvoliosf I didn't get it as a joke, either. Some kind of emoticon might have helped, or realizing that our world is poised on the edge of taking offense much more than we might realize, and some wholly innocent remarks can become more important than one might have intended them to be.

[@kibels894]

Loan words are commonly pronounced according to the rules of the borrowing language. Insisting on native pronunciation is just pedantry. Get a grip.

[@raghardeishi972]

@@MichaelPaine What's with all these people who are seeing symbols of multicultural western European Union everywhere? These are obviously 4 submarines that got stuck in the water wheel. Look at these periscopes. Type IID.

[@adrianhead6272]

Good grief... how on Earth does that warrant a 57min video? Completed in 14m36s. Interplay between the arrows and other lines is key.