"Maybe we should have started in box 9". "Yes, we definitely should have started in box 9". However, the logic in box 9 required 100% of the logic used before Simon looked at box 9. Therefore, Simon found the foundational logic and followed it.
@@CrackingTheCryptic Thanks a lot! I actually had a dry spell for several months after setting this one, because I knew how unlikely I was to ever be this lucky again. 😂 I loved the video! Great explanations, awesome entertainment, just all in all tremendously enjoyable! I also have to give a shoutout to my friend Aaronymous, who basically invented the ruleset based on a vague suggestion that I gave him. He also has a magnificent (albeit very hard) coordinate arrows sudoku that is well worth checking out!
Ooof! 88 minutes. Mind-bending, but not monstrous. You know the feeling when you're trying to keep track of too many things in your head, and suddenly *poof* -- they're all gone. Happened a lot tonight.
Simon, I've been following the channel for a while now and it's fascinating and endlessly entertaining to watch you solve these puzzles. Up until now, I've not had the inclination to try to solve one myself, but the praise for 'A Walk in the Mist' at the start of this video and the fact that over 15000 people had solved it made me finally try my hand at it. I cannot put into words the 30 minutes of joy I experienced as I managed to put the first digit in the grid, then the next and the next and (with a 3 in the corner!) so on all the way until the end. I know there is a good chance you won't read this in the plethora of comments, but thank you from the bottom of my heart for introducing me to a wonderful world of sudoku I never knew existed. I am definitely hooked.
You know I have had the exact experience with this channel. I started by just watching Simon solve, which was relaxing & engaging, a much needed pass time in pandemic. Then I started solving alongside him, watching the video little bit and then going on by myself as much as I could. I really do encourage you to keep up solving whenever you have time. It really is greatly rewarding activity for the brain like going for a run. BTW It was my first 3 in the corner(A walk in the mist).
I was exactly the same. It was the first time I’ve tried one of these more “high level” sudokus and even though it took me an hour it was such a mental reward, and what a magical feeling as it all fell into place. (And yes that jolly 3 in the corner)
1 hour, 13 minute video came out 18 minutes ago. This comment was made 5 minutes ago 13 minutes for all this data. I wonder if it actually watches the video at a higher speed to pick up all the individual phrases or if it just scans the subtitles to count
@@DuncanGDA processing audio can be done at a rate much faster than it takes to listen to the audio. Basically, it looks for the ups and downs that correspond to words in the sound wave. Looking for patterns in the sound wave can be done at any speed.
I am absolutely thrilled to see this puzzle featured on your channel! The logic found in this puzzle is absolutely stunning, from the global break-in idea to the disambiguation using r3c3 and all the way through the rest of the puzzle. Congrats to Piatato!
20:30 (spoil) : You could rather see that columns 789 and rows 789 do not contain any green, so 789 cannot go on an arrow, no matter the final sum (as spotted at 41:50). Wonderful puzzle, I loved solving it, and I loved Simon's solve of it! Thank you very much for sharing such gems!
I'm happy to say I was able to solve this Sudoku. It took me about 4 hours and 15 minutes to get there. I rather quickly figured 7,8,9 weren't going to be on an arrow and that the 6 always needed to be accompanied with a 1. After an hour and a half I got the first digid in r3c3, when i realised coordinates needed to all be different. And it let me to both 1,6 and 6,1 coordinates. I had to use pen and paper for the rest to help me visualize the options. So I thought my approach would differ completely from Simon's and was wondering how he would go about it. Interesting to see his approach was quite similar to mine, but he was just quicker to spot the things and visualize the options in his head.
Wow! Loved this puzzle! I spent over two hours grinding through it.... then once I understood the key to it, I had to restart it because of some previous mistake, and then completed it in about 17 minutes, absolutely adorable. Now I want to watch your solve!
Just another masterpiece of construction. Every day this channel brings it. Very lucky and honored to be part of it. Thank ful Simon that you and Mark are the 2 captains of this magnificent ship guiding us on this incredible infinite journey.
So many things: I can't possibly remember everything I was thinking, but a couple of things I do remember. Mark sent this to you knowing that you would love it - it was great fun to watch you solve it. And thank you as well for explaining the 'nori-nori' comment that I have heard so very often in your videos - now I might try to go back and figure out what video that was and watch the original. Your reaction to coming up with "easy" things after working hard on them was very amusing, too! See, there are too many pleasures to recount in this video. Thanks, Simon.
I was so proud about finding the diagonals thing... only to discover it was Simon's first and immediate deduction. Oh and I took 46 minutes to solve it, I thought I had struggled more than I did
48:13 (over two sessions, rather spaced apart from each other) ... I spent 20 minutes on this one, then had to step away for a bit, and only recently returned. I'm glad I did. Wonderful puzzle!
2:18:55 - What an amazing puzzle. How on Earth did Piatato come up with it? It took me a while to get started but gradually it all fell into place! So chuffed to have finished it unaided.
Just settling down after a trying day (actually 3 days) with a 🍷to watch Simon and then Mark and relax. About that kid’s puzzle - do you have to prove you’re a child to get access to it. 🤔. I know an adult (me) who would like to try it… 🤪
Glad settling down and able to enjoy our 2 favorite cracking the crypters.😀 I think we are all a child...at heart..so should be able to access the puzzle. 😁
“How am I going to indicate that?” My solution was to use the line tool to drop circles in the six possible cells that could be referenced by the arrows in box 9, then remove the circle from the one that wasn’t a box 9 reference when i figured that out. I also used changed referred-to cells to the darker green once I found which arrow was pointing at it to keep track of who still needed a reference arrow completed.
This is over the top clever. And so original. And Simon I think you did need the opening thinking, just to get a handle on how the referencing worked. Simply fantastic.
Absolutely wonderful! A lot of videos seems to hold the best sudoku you’ll ever see, according to the titles, but this one really stands out for me. Beautiful and elegant ruleset, good flow in the solve resulting in a very entertaining video 😊
Two minutes into the rules Simon goes like “what??” I never heard from him, makes me looking forward to this! Did it! 126 minutes, had to restart after 96 minutes, and a glance at the video to check my idea was sound. I was making my colours a bit overwhelming and picked up a new strategy from Simon which kept it clean and simpel. That helped a lot. I also did a lot of candidate notation and instead of full numbers in the beginning i did corner notation. And finally it all dropped together, jippie!
Simon you always make this look so easy. I have played sudoku for years but a lot of the ones you solve I honestly wouldn't comprehend where to start even if my life dependents on it.
@@Nevir202 Yeah, I'm having that same internal screaming when he's determining how many referenced cells he can have, but hasn't realized two arrows can reference the same cell. And then 8,9 can't be in an arrow cell. Graaah. He's normally so logical.
18:28 You can do slightly better with the 6s (has the same effect on the count but gives progress on the shading) - you can eliminate 6 from rc3c3 entirely: since that indexes a sum in column 6 for two different arrows, and the rules say two arrows cannot index the same cell, that would require two different sums in column 6, and by shading we know it's down to only one possible target cell in that column.
I would normally have given up quickly on a puzzle with an hour long video, but I persisted because of the promising title and was rewarded well! Beautiful puzzle. Beautiful enough that I watched the full video (and shouted "pencilmark the arrrows!" many times).
I definitely do watch more than one CTC video a month. That said, this was genuinely one of the most unique, thrilling puzzle I have solved in a long time. It gave me the feeling I got when I first discovered the channel and the world of variant sudokus. Hats off to @Piatato and to you simon for the great recommendation.
I survived this puzzle, with some difficulty. Despite seeing where to look for the break in very quickly, I still had trouble wrapping my head around how best to proceed. Amazing puzzle setting. Now to watch Simon and what I presume will be an amazing solve.
If Simon had been considering arrow tips vs. arrow ends when counting options for certain digits (like the 1s and 5s), it would have cleared everything MUCH faster! For example, column 5’s green cells are a completely different set from row 5’s green cells, so the 5s you need to place on tips have nothing to do with the 5s you need to place on ends.
This is very enjoyable with the multiple colour palettes. I put a center digit pencil mark into the possible target cells, though, to only have single colours in the cells.
Once past the beginning two steps, (1) determining area of interest and (2) understanding box 9, then you need to look at 1s. You have a ton of them to put into the grid. And you can't put 22=4 in the grid because then there won't be places for both the 14 and 41 (along with the other 1s). So, you need to find homes on arrows for the following: 11, 12 (or 21), 13 (or 31), 14, 41, 15, 61, 16. That's 9 ones! And you only have 8 boxes to work with because box 6 has no arrows! So, it's lucky the one arrow is doubled up in box 1. But then, you can work out the positions of all the ones, and elimination gives all the partners, and then simple sudoku finishes it.
Really fun one. I ended up solving by marking all the arrows that had to start and end with 1s after limiting to 12 cells and dealing with box 9. That really opened up the puzzle fast. The key point to make it work is you can rule out r2c2 because with putting a four in the box would prevent you from placing a 1->4 arrow anywhere! Then there is only one allocation of 1s that gives you 8 ones on arrows.
@@khoozu7802an you explain further? I feel like I’m missing a step in your logic. I don’t see how you choose between r1c2 and r2c1 for the 4 at this point. You say the 4 in c1 must be green but there seems to be a few valid ways at this point to place 1-3 1-4 and 2-1 on arrows that would let you place the 4 in c1 in r5c1 for example
@@vishvananda starting from 58.06, u can place a 4 at R3C1. This is because we know either one arrow pointing to 1 at R1C7 or R1C8, two arrows pointing 1 at R3C3, and one arrow pointing to 1 at R7C1, that means we have at least 4 green cells appear at column one!
Epically good. This is my favourite sort of puzzle, the sort that makes this channel so great to watch. Fairly simple rules to grasp, but with far-reaching and unexpected and delightful consequences. I found it so satisfying the moment of realising that all indexed cells must be in the top left half of the grid... and everything else followed on from that really smoothly. Top work
I'm at 22:38 so if Simon figured this out later in the video, I'll try to remember to delete this...but you can tell at this point that 7, 8, and 9 can never go on arrows for a much simpler reason than what Simon is using: no cells in those rows or columns are green! Edit: he did eventually figure it out at 41:31!
Wow! That was a mind bender (for me)! I almost gave up at the midway point because I thought I'd hit a fatal conflict (the 1/4 pairs in boxes 2 and 3... for some reason I thought one of those top arrows had to be the 1,1 reference) but then watched the video up to that point and saw you had followed the same logic with the same conclusions. That gave me the gusto to carry on.
Not that you really needed more colors at the end, but just a reminder that you've got other colors tucked away. Brown, peach, dark purple, and dark blue are all different enough from the main palette to use I think (plus they're all customizable).
This was one of the most delightful puzzles. All the deductions felt really rewarding to figure out and there were no places to get stuck otherwise. Took me 33:51 which feels quite good for my level.
That was quite an intriguing story Of digits in full number glory. 'Twas marvelous, thrilling. Enchanting, cool, chilling, Fantastic, wondrous, nori nori!
I am proud i was able to figure out the break in to this one. I usually have trouble with puzzles featured in longer videos. Unfortunately, i had a lot of difficulty keeping track of my pencil marks/colouring as well as keeping track of whether something was a column or row and ended up making some mistakes leading me to restart. bit over an hour and a half of enjoyable solving! I didnt notice the 8 ones on arrows bit. That was brilliant.
I had no shot at solving this one myself but I am pleased that I was able to make some of the general deductions about the puzzle… side note I can’t tell if I was laughing, crating or throwing a bloodclot at 1:09:30 when Simon said the 27 pair in R2C8 couldn’t be placed as it was solved by a digit we’ve had literally since the beginning of the puzzle, the given 7 in R5C8 I know, I know, the tendency is to sometimes overlook the given digits because he’s kinda training on the blue ones that he’s filled in, but that moment still had me screaming at my screen. Overall however this was a very fun puzzle to watch you solve thank you for tackling it.
Absolutely beautiful puzzle. Very glad I decided to watch instead of solve myself on this one. Not sure I would have found the break in with the no 7's 8's or 9's on arrows. If it's even a "break" in, it may be more of a "small crack" in. The puzzle did not relent haha. Again, absolutely beautiful.
60 minutes exactly including one full reset off of bad logic (which luckily broke early and wasn't too hard to find), and one "assume the arrow logic is right but erase everything else and hope you just messed up the sudoku", which turned out to be accurate. Slightly mind-bending, but not completely impossible. I think all the other indexing type puzzles we've been getting help a lot.
What a magical puzzle. Solving it ( after ages ) made me feel like I was lost in a jungle. But I managed it without support, only once I had to compare it with Simon in order to know if I was on the right way.
0:07:12 Since we can only use the numbers 1-9, it follows for the reference cells (cells described by Coordinate Arrows) with coordinates (X,Y) that X + Y ≤ 9. It follows that the arrows can only point the cells on and above the diagonal (8,1), (7,2), (6,3), ..., (1,8). 0:09:45 The diagonal (8,1), (7,2), ..., (1,8) cannot contain reference cells, because then a 9 would have to be written into these cells and each of these cells is also on a arrow again. But as we have shown, no reference cell exists in Row or Column 9. In general: We cannot have a 9 on an arrow. 0:12:51 In line 5, the two cells (5,1) and (5,2) cannot be reference cells, since they would then have to be 6 and 7, which does not work due to the given 6 and 7. 0:15:53 We cannot have 8 on an arrow, since that would reference cells in row and column 8, but there are no reference cells in row or column 8. Therefore we get rid of the reference cells (7,1), (6,2), (2,6) and (1,7). 0:17:29 We cannot have a 7, 8 or 9 on an arrow. Therefore in Box 9, we have a [7,8,9] triple. 0:23:55 In Box 9, we have a [1,6] pair to reference the cell (6,1) or (1,6). 0:25:25 In box 9 we now have to place the numbers 2,3,4 and 5, which will all land on an arrow. Obviously, we cannot have a [4,5] pair on an arrow, since neither (5,4) nor (4,5) can be reference cells. Also, we cannot have a [2,5] pair on an arrow, since then the other arrow would have to be a [3,4] pair. From this it would follow that we would have 3 times the 7 on the diagonal (6,1), (5,2), (4,3), ..., (1,6), but the diagonal is only in two boxes, so we can only have two times the 7 on this diagonal. So finally in Box we have a [3,5] pair and a [2,4] pair in addition to the [7,8,9] triple and the [1,6] pair. 0:29:38 The [2,4] pair in Box 9 points to a 6 in (2,4) or (4,2). The [3,5] paair in Box 9 point to a 8 in (3,5) or (5,3). 0:30:05 Cell (3,3) on the tip of an arrow cannot be a 6 because we can only have one reference cell in column 6. It has to be a 1, the only possible position for a reference cell with a 6 in (2,4) or (4,2). 0:32:10 From here on it is very simple.
Have to say, Simon, it was in no way a mistake to have started in the top left corner and uncovering that diagonal patterning of the possible referenced cells. Without that dive into the underlying patterns of the whole (and they were not obvious!), I don't know how fruitful it would have been working out the possibilities of box 9. Without your very delightful help I would never have realised how not having a 9 on an arrow knocked successively at 8s and 7s. Well, not in under a week of intense staring, without toilet breaks.
I remember him saying in another video that he is getting so used to empty grid sudoku that he is turning blind for black digits. Since practically all digits are blue.
27 minutes into the video, and not sure if Simon catches onto this idea, but thinking about how many of each number can appear on the arrows helped limit some options. Could 6 go into r3c3? No, as you can only have one 6 for the column option, and one for the row option. Putting 6 into r3c3 would mean require two values in column 6, when we only have 1 option. Likewise, when looking at box 9, not only can 9 not go onto an arrow, you can immediately see 7 and 8 were ruled out as there were no longer valid answer cells in those columns and rows. Taking this a step further, can both r2c4 and r4c2 be a 6? No, because there is only one answer cell in column 6. So of the three arrow cells on that diagonal, only one can be a 6.
I'm new to sudoku and variant sudoku and this was so much fun! The joy I feel when I make breakthru in logic solving these is quite amazing. This was a brilliant puzzle, thank you for sharing this. :D
I really like the concept of cordonates sudoku, it reminds me of the slingshot one you did earlier And i really like the meta from preventing 9/8/7 from being on arrow, cause if we answered the question once, we answered it for all the puzzle
One of the things I really love about these videos is getting to experience the beautiful logic underlying puzzles I would never, ever be able to solve on my own without oodles of ugly bifurcations.
Very nice variant , a new one where i didnt need to watch the video for further explanation. Still amazes me the mental math/memorye these guys have....ive written so much on the side. And Managed to ask the right q? (#1s) before watching their video.
On behalf of Nicole, I can confirm that she was deeply shocked by appearing on the channel, and extremely happy at the same time 😅 Thank you to Simon for making this possible!
I thought I was progressing well through this one until I got to a cell with no options left. So I watched the video for a while until it eventually clicked that the arrows are row->column, not x->y! Then I just had to rewind a long way and it went though cleanly on the second attempt.
been looking at this thing since the reveal, and at 4:30 I've concluded that an arrow cannot ever end in 7,8, or 9 in this puzzle - which is a reasonable restriction to start with. Attempted a solve, got about 15 minutes in and got stumped at 20 possible clued cells, and box 9 pencil marked. There's some big chain of consequences that forces cells and number pairs, and I was too distracted to get all the way into it. 30:40 ahh, there's the step I didn't quite reach, concluding that 1 goes in r3c3. I'm guessing things start to collapse from there.
The key to this one for me was realizing how limited the numbers that can go on arrows are. 9, 8, and 7 immediately get ruled out. 6 only has two possible combinations, and 5 only has 3 (1,5 gets eliminated by the given 6) Once you find the higher numbers, the puzzle really starts filling itself out, and then you realize that the remaining arrow boxes must be 1, 2, 3, or 4. Row 1 fills up, and then the puzzle is a breeze
31:00 A really cool thing is that it's possible to figure this specific thing out really early in the puzzle, before even touching box 9! If r3c3 is going to be referenced, it will be a 6, and because it's on the end of two different arrows, there would need to be two DIFFERENT cells in column 6 that can be referenced. r1c6 is possible, but r2c6 would put an 8 on an arrow which would then put a 9 on an arrow, and r3c6 is worse, and everything beyond that is too big. So there can only be 1 arrow that ends in 6 in the entire puzzle, and so referencing r3c3 to put a 6 there is impossible from the very beginning purely by arrow geometry. EDIT: I also really highly recommend the Pen Tool for notating Marked cells (eg: referenced cells). A simple click in a cell will give you an O of a color of your choice, and having that separate from the actual coloring of the cells helps me keep things straight, letting me color freely while still keeping my Important Cells clear
1:00:00 The trick for the 1s, I think, and for a lot of this puzzle, is to keep straight whether a digit needs to go at the beginning of an arrow or the end of an arrow, and to think about those separately. It's true that we need at least 8 1s on arrows, but it's more useful to recognize that we need at least 5 1st specifically at the beginning of arrows. You've got 2 already, and 4 more possible, but two of those 4 would produce 1-1 arrows, so one of those two will be true and the other won't, and the two remaining possibilities must be forced (and this also eliminates the possibility that r1c3 is a 4, since we can't squeeze in another 1-something arrow to reference it)
You kept saying you "should have started" in the bottom right, but I disagree: You just ("just") needed to use your green more. Start looking at which row/column combos are possible by just looking at your green cells (which of course requires you to do the work you did to make them green in the first place)
"Maybe we should have started in box 9". "Yes, we definitely should have started in box 9". However, the logic in box 9 required 100% of the logic used before Simon looked at box 9. Therefore, Simon found the foundational logic and followed it.
1:09:30 Simon: I can't believe it. That's not done.
Given 7: he'll never find me!
1:10:02 Given 7: Told ya so.
Oooh, looking forward to watching this, thanks a lot for featuring it! 😄👀
Absolutely incredible puzzle.
Nori nori! (:
@@CrackingTheCryptic Thanks a lot! I actually had a dry spell for several months after setting this one, because I knew how unlikely I was to ever be this lucky again. 😂 I loved the video! Great explanations, awesome entertainment, just all in all tremendously enjoyable!
I also have to give a shoutout to my friend Aaronymous, who basically invented the ruleset based on a vague suggestion that I gave him. He also has a magnificent (albeit very hard) coordinate arrows sudoku that is well worth checking out!
This is quite a masterpiece! Thank you for setting it!
It’s brilliant, Piatato! It took me nearly 2 hours but I loved every minute. So many amazing a-ha moments in this one. Thanks so much for setting it.
I love it when Simon proves something for himself and then just ignores that he did that and moves on
You’re talking about 47:00 when he forgets he literally just eliminated the ones from row two in box 3.
Ooof! 88 minutes. Mind-bending, but not monstrous.
You know the feeling when you're trying to keep track of too many things in your head, and suddenly *poof* -- they're all gone. Happened a lot tonight.
The look on Simon’s face at the end, the absolute happiness, has put a smile on my face as much as watching the solve.
This has been avaiable for ages!
YES.
This solve definitely goes into the "Simon saddles himself with eccentric notation choices" Hall of Fame. 😂
Simon, I've been following the channel for a while now and it's fascinating and endlessly entertaining to watch you solve these puzzles. Up until now, I've not had the inclination to try to solve one myself, but the praise for 'A Walk in the Mist' at the start of this video and the fact that over 15000 people had solved it made me finally try my hand at it. I cannot put into words the 30 minutes of joy I experienced as I managed to put the first digit in the grid, then the next and the next and (with a 3 in the corner!) so on all the way until the end. I know there is a good chance you won't read this in the plethora of comments, but thank you from the bottom of my heart for introducing me to a wonderful world of sudoku I never knew existed. I am definitely hooked.
You know I have had the exact experience with this channel. I started by just watching Simon solve, which was relaxing & engaging, a much needed pass time in pandemic. Then I started solving alongside him, watching the video little bit and then going on by myself as much as I could. I really do encourage you to keep up solving whenever you have time. It really is greatly rewarding activity for the brain like going for a run. BTW It was my first 3 in the corner(A walk in the mist).
I was exactly the same. It was the first time I’ve tried one of these more “high level” sudokus and even though it took me an hour it was such a mental reward, and what a magical feeling as it all fell into place. (And yes that jolly 3 in the corner)
Rules: 01:41
Let's Get Cracking: 07:26
Simon's time: 1h3m22s
Puzzle Solved: 1:10:48
What about this video's Top Tier Simarkisms?!
Nori Nori: 9x (10:57, 11:01, 11:10, 11:12, 11:16, 23:54, 31:56, 1:12:17)
Bobbins: 3x (45:55, 48:02, 1:08:24)
Three In the Corner: 2x (04:50, 1:05:12)
And how about this video's Simarkisms?!
Hang On: 20x (09:23, 11:42, 16:12, 16:25, 16:27, 17:31, 17:31, 32:18, 36:06, 44:10, 45:42, 49:42, 49:44, 51:03, 1:01:57, 1:01:57, 1:01:57, 1:03:44)
By Sudoku: 12x (34:21, 47:08, 54:00, 57:04, 1:01:57, 1:04:45, 1:04:50, 1:09:30, 1:09:55, 1:09:57, 1:10:14, 1:10:39)
Ah: 11x (15:22, 15:42, 24:30, 28:00, 32:18, 33:44, 35:04, 45:51, 49:42, 53:23, 1:11:39)
In Fact: 10x (00:32, 07:59, 08:01, 13:27, 20:15, 23:58, 30:30, 31:36, 33:01, 1:02:02)
Beautiful: 9x (13:29, 22:49, 24:33, 38:46, 38:46, 1:03:38, 1:05:17, 1:06:11, 1:11:51)
Sorry: 7x (04:11, 27:50, 37:01, 44:36, 51:53, 59:01, 1:04:38)
Naughty: 7x (24:16, 24:27, 26:28, 31:29, 31:56, 34:13, 34:19)
Brilliant: 6x (03:18, 03:18, 03:20, 03:20, 04:58, 32:27)
Lovely: 4x (05:23, 53:34, 53:34, 1:00:13)
Clever: 3x (15:25, 22:49, 1:11:39)
Surely: 3x (1:01:18, 1:02:02, 1:05:29)
What on Earth: 2x (25:22, 1:06:07)
Goodness: 2x (27:46, 27:52)
Approachable: 2x (00:32, 07:03)
Obviously: 2x (28:26, 36:27)
Wow: 2x (56:54, 1:12:17)
Pencil Mark/mark: 2x (37:35, 1:08:06)
Useless: 1x (21:10)
Naked Single: 1x (1:08:16)
Nonsense: 1x (06:30)
I Have no Clue: 1x (07:19)
Stuck: 1x (42:35)
Break the Puzzle: 1x (24:50)
Fascinating: 1x (18:16)
Incredible: 1x (1:11:11)
First Digit: 1x (39:42)
Gorgeous: 1x (1:11:23)
Come on Simon: 1x (48:02)
Think Harder: 1x (48:18)
Full stop: 1x (1:12:12)
Wrogn: 1x (06:25)
Plonk: 1x (32:04)
Have a Think: 1x (1:01:01)
Most popular number(>9), digit and colour this video:
Twelve (15 mentions)
One (152 mentions)
Green (24 mentions)
Antithesis Battles:
Even (7) - Odd (0)
Column (52) - Row (51)
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!
1 hour, 13 minute video came out 18 minutes ago. This comment was made 5 minutes ago
13 minutes for all this data. I wonder if it actually watches the video at a higher speed to pick up all the individual phrases or if it just scans the subtitles to count
@@DuncanGDA processing audio can be done at a rate much faster than it takes to listen to the audio. Basically, it looks for the ups and downs that correspond to words in the sound wave. Looking for patterns in the sound wave can be done at any speed.
After this video, you're going to need to adjust the coding to count how many times Jobby Jobby is used too 😂
@@leighedworthy145 3x jobby jobby from 1:07:44 on
the timing is wrong, it puts it after he says the phrase/word and not at the start
I am absolutely thrilled to see this puzzle featured on your channel! The logic found in this puzzle is absolutely stunning, from the global break-in idea to the disambiguation using r3c3 and all the way through the rest of the puzzle. Congrats to Piatato!
20:30 (spoil) : You could rather see that columns 789 and rows 789 do not contain any green, so 789 cannot go on an arrow, no matter the final sum (as spotted at 41:50).
Wonderful puzzle, I loved solving it, and I loved Simon's solve of it!
Thank you very much for sharing such gems!
I'm happy to say I was able to solve this Sudoku. It took me about 4 hours and 15 minutes to get there.
I rather quickly figured 7,8,9 weren't going to be on an arrow and that the 6 always needed to be accompanied with a 1. After an hour and a half I got the first digid in r3c3, when i realised coordinates needed to all be different. And it let me to both 1,6 and 6,1 coordinates.
I had to use pen and paper for the rest to help me visualize the options. So I thought my approach would differ completely from Simon's and was wondering how he would go about it. Interesting to see his approach was quite similar to mine, but he was just quicker to spot the things and visualize the options in his head.
Wow! Loved this puzzle! I spent over two hours grinding through it.... then once I understood the key to it, I had to restart it because of some previous mistake, and then completed it in about 17 minutes, absolutely adorable. Now I want to watch your solve!
How many times is Simon going to ask “can we put 7 on an arrow?” and keep disproving it? 😂
🤣
Just another masterpiece of construction. Every day this channel brings it.
Very lucky and honored to be part of it. Thank ful Simon that you and Mark are the 2 captains of this magnificent ship guiding us on this incredible infinite journey.
So many things: I can't possibly remember everything I was thinking, but a couple of things I do remember. Mark sent this to you knowing that you would love it - it was great fun to watch you solve it. And thank you as well for explaining the 'nori-nori' comment that I have heard so very often in your videos - now I might try to go back and figure out what video that was and watch the original. Your reaction to coming up with "easy" things after working hard on them was very amusing, too! See, there are too many pleasures to recount in this video. Thanks, Simon.
From the catalogue it could well be ua-cam.com/video/NCUveHxyZZo/v-deo.html (the original Norinori video)
@@tonyvanderpeet5683 Thanks for the link - I just watched this video and it was funny and wonderful!
@@emilywilliams3237 Back then someone made a video with Simon saying nori nori ua-cam.com/video/na9azkXEueo/v-deo.html
@@yadiracamacho499 That was perfect. Thanks for the link!
I was so proud about finding the diagonals thing... only to discover it was Simon's first and immediate deduction.
Oh and I took 46 minutes to solve it, I thought I had struggled more than I did
Cool!
My time is 50:45 and I thought I was pretty quick this time 😅
@@victoriam6569 Any time I manage to solve, I consider it a win
@@tirocska yeah! 👍
48:13 (over two sessions, rather spaced apart from each other) ... I spent 20 minutes on this one, then had to step away for a bit, and only recently returned. I'm glad I did.
Wonderful puzzle!
2:18:55 - What an amazing puzzle. How on Earth did Piatato come up with it? It took me a while to get started but gradually it all fell into place! So chuffed to have finished it unaided.
Just settling down after a trying day (actually 3 days) with a 🍷to watch Simon and then Mark and relax. About that kid’s puzzle - do you have to prove you’re a child to get access to it. 🤔. I know an adult (me) who would like to try it… 🤪
Glad settling down and able to enjoy our 2 favorite cracking the crypters.😀
I think we are all a child...at heart..so should be able to access the puzzle. 😁
@@davidrattner9 😁
“How am I going to indicate that?” My solution was to use the line tool to drop circles in the six possible cells that could be referenced by the arrows in box 9, then remove the circle from the one that wasn’t a box 9 reference when i figured that out. I also used changed referred-to cells to the darker green once I found which arrow was pointing at it to keep track of who still needed a reference arrow completed.
46:16 For me, I loved the way the logic mostly made in one corner of the puzzle slowly forced everything else into fold
This is over the top clever. And so original. And Simon I think you did need the opening thinking, just to get a handle on how the referencing worked. Simply fantastic.
Absolutely wonderful! A lot of videos seems to hold the best sudoku you’ll ever see, according to the titles, but this one really stands out for me. Beautiful and elegant ruleset, good flow in the solve resulting in a very entertaining video 😊
Two minutes into the rules Simon goes like “what??” I never heard from him, makes me looking forward to this!
Did it! 126 minutes, had to restart after 96 minutes, and a glance at the video to check my idea was sound.
I was making my colours a bit overwhelming and picked up a new strategy from Simon which kept it clean and simpel.
That helped a lot.
I also did a lot of candidate notation and instead of full numbers in the beginning i did corner notation.
And finally it all dropped together, jippie!
What a joyful puzzle! Simon is brilliant, a joy to watch this solving!
I love how SImon looks at these types of puzzles and goes "this can't be solved" then promptly proceeds to solve them by hook or by crook.
Simon you always make this look so easy. I have played sudoku for years but a lot of the ones you solve I honestly wouldn't comprehend where to start even if my life dependents on it.
47:22 literally screaming internally as he fails to see that not only is there a 1 on an arrow in that box, it is specifically on the arrow tip.
@@Nevir202 Yeah, I'm having that same internal screaming when he's determining how many referenced cells he can have, but hasn't realized two arrows can reference the same cell. And then 8,9 can't be in an arrow cell. Graaah. He's normally so logical.
18:28 You can do slightly better with the 6s (has the same effect on the count but gives progress on the shading) - you can eliminate 6 from rc3c3 entirely: since that indexes a sum in column 6 for two different arrows, and the rules say two arrows cannot index the same cell, that would require two different sums in column 6, and by shading we know it's down to only one possible target cell in that column.
At 20:00 I'm sat here stressing over the r2c4, r3c3 and r4c2 triple and whether that can have 2 coordinates pointing at it or only 1...
This was beautiful! Well done Piatato and well done Simon!
I would normally have given up quickly on a puzzle with an hour long video, but I persisted because of the promising title and was rewarded well! Beautiful puzzle. Beautiful enough that I watched the full video (and shouted "pencilmark the arrrows!" many times).
I definitely do watch more than one CTC video a month. That said, this was genuinely one of the most unique, thrilling puzzle I have solved in a long time. It gave me the feeling I got when I first discovered the channel and the world of variant sudokus. Hats off to @Piatato and to you simon for the great recommendation.
39:54 finish. Love the logic gradually eliminating potential target cells, everything flowed nicely. Excellent!
Surprisingly approachable, and a lot of fun.
I survived this puzzle, with some difficulty. Despite seeing where to look for the break in very quickly, I still had trouble wrapping my head around how best to proceed. Amazing puzzle setting. Now to watch Simon and what I presume will be an amazing solve.
If Simon had been considering arrow tips vs. arrow ends when counting options for certain digits (like the 1s and 5s), it would have cleared everything MUCH faster! For example, column 5’s green cells are a completely different set from row 5’s green cells, so the 5s you need to place on tips have nothing to do with the 5s you need to place on ends.
This is very enjoyable with the multiple colour palettes. I put a center digit pencil mark into the possible target cells, though, to only have single colours in the cells.
Once past the beginning two steps, (1) determining area of interest and (2) understanding box 9, then you need to look at 1s. You have a ton of them to put into the grid. And you can't put 22=4 in the grid because then there won't be places for both the 14 and 41 (along with the other 1s). So, you need to find homes on arrows for the following: 11, 12 (or 21), 13 (or 31), 14, 41, 15, 61, 16. That's 9 ones! And you only have 8 boxes to work with because box 6 has no arrows! So, it's lucky the one arrow is doubled up in box 1. But then, you can work out the positions of all the ones, and elimination gives all the partners, and then simple sudoku finishes it.
(Actually placing the 14 arrow is still easy if you put 22 in the grid, just 41 immediately has no place to go anymore)
Awesome solve…I’m still working on solving medium hard normal sudoku puzzles…lol
Really fun one. I ended up solving by marking all the arrows that had to start and end with 1s after limiting to 12 cells and dealing with box 9. That really opened up the puzzle fast. The key point to make it work is you can rule out r2c2 because with putting a four in the box would prevent you from placing a 1->4 arrow anywhere! Then there is only one allocation of 1s that gives you 8 ones on arrows.
Even better. When u knew there are 4 arrows pointing to 1, that means all the 4 cells at column 1 are green, so R3C1=4
@@khoozu7802an you explain further? I feel like I’m missing a step in your logic. I don’t see how you choose between r1c2 and r2c1 for the 4 at this point. You say the 4 in c1 must be green but there seems to be a few valid ways at this point to place 1-3 1-4 and 2-1 on arrows that would let you place the 4 in c1 in r5c1 for example
@@vishvananda I can explain it more but I don't know what u are talking about. I said 4 at R3C1, not R5C1, not R2C1
@@vishvananda starting from 58.06, u can place a 4 at R3C1.
This is because we know either one arrow pointing to 1 at R1C7 or R1C8, two arrows pointing 1 at R3C3, and one arrow pointing to 1 at R7C1, that means we have at least 4 green cells appear at column one!
@@vishvananda if we have something like x-->y
x means which row and y means which column
This one took me quite a while to get going, but incredibly beautiful to solve. Was a pleasure to watch.
Epically good. This is my favourite sort of puzzle, the sort that makes this channel so great to watch. Fairly simple rules to grasp, but with far-reaching and unexpected and delightful consequences. I found it so satisfying the moment of realising that all indexed cells must be in the top left half of the grid... and everything else followed on from that really smoothly. Top work
people are proud for having solved it. i am just proud having been able to keep up with Simon's logic and track of thought
I'm at 22:38 so if Simon figured this out later in the video, I'll try to remember to delete this...but you can tell at this point that 7, 8, and 9 can never go on arrows for a much simpler reason than what Simon is using: no cells in those rows or columns are green!
Edit: he did eventually figure it out at 41:31!
This took a bit too long 😬
The way he kept doing the long proof, when dude you've already limited the green cells to rows/columns 1 to 6... 😄
Wow! That was a mind bender (for me)! I almost gave up at the midway point because I thought I'd hit a fatal conflict (the 1/4 pairs in boxes 2 and 3... for some reason I thought one of those top arrows had to be the 1,1 reference) but then watched the video up to that point and saw you had followed the same logic with the same conclusions. That gave me the gusto to carry on.
absolutely insane, thanks for the solve
I am completely amazed at the beauty of sudoku. Thank you Simon.
Took me a while but I'm quite proud at having solved this one. Thank you Piatato.
Not that you really needed more colors at the end, but just a reminder that you've got other colors tucked away. Brown, peach, dark purple, and dark blue are all different enough from the main palette to use I think (plus they're all customizable).
This was one of the most delightful puzzles. All the deductions felt really rewarding to figure out and there were no places to get stuck otherwise. Took me 33:51 which feels quite good for my level.
Simon records his videos several days before putting them up so keep watching before you email again.
Simon records his videos several days in advance so keep watching before you email again.
That was quite an intriguing story
Of digits in full number glory.
'Twas marvelous, thrilling.
Enchanting, cool, chilling,
Fantastic, wondrous, nori nori!
I am proud i was able to figure out the break in to this one. I usually have trouble with puzzles featured in longer videos. Unfortunately, i had a lot of difficulty keeping track of my pencil marks/colouring as well as keeping track of whether something was a column or row and ended up making some mistakes leading me to restart. bit over an hour and a half of enjoyable solving! I didnt notice the 8 ones on arrows bit. That was brilliant.
I think this puzzle has melted my brain...😵💫
79 minutes to fill in the arrows, 84 total. Mostly figuring out the bounds on number of each number on the arrows.
I had no shot at solving this one myself but I am pleased that I was able to make some of the general deductions about the puzzle… side note I can’t tell if I was laughing, crating or throwing a bloodclot at 1:09:30 when Simon said the 27 pair in R2C8 couldn’t be placed as it was solved by a digit we’ve had literally since the beginning of the puzzle, the given 7 in R5C8 I know, I know, the tendency is to sometimes overlook the given digits because he’s kinda training on the blue ones that he’s filled in, but that moment still had me screaming at my screen. Overall however this was a very fun puzzle to watch you solve thank you for tackling it.
My favorite part of the puzzle was thinking about ones on arrows
Absolutely beautiful puzzle. Very glad I decided to watch instead of solve myself on this one. Not sure I would have found the break in with the no 7's 8's or 9's on arrows. If it's even a "break" in, it may be more of a "small crack" in. The puzzle did not relent haha. Again, absolutely beautiful.
This might be my favourite puzzle of the year so far. Took me 82 minutes but it was fun the whole way through.
Ow wow, i was in no mood to start this one for myself. Especially with so few solves prior to Simon tackling it.
Maybe i will start this.
60 minutes exactly including one full reset off of bad logic (which luckily broke early and wasn't too hard to find), and one "assume the arrow logic is right but erase everything else and hope you just messed up the sudoku", which turned out to be accurate. Slightly mind-bending, but not completely impossible. I think all the other indexing type puzzles we've been getting help a lot.
What a magical puzzle. Solving it ( after ages ) made me feel like I was lost in a jungle. But I managed it without support, only once I had to compare it with Simon in order to know if I was on the right way.
0:07:12 Since we can only use the numbers 1-9, it follows for the reference cells (cells described by Coordinate Arrows) with coordinates (X,Y) that X + Y ≤ 9. It follows that the arrows can only point the cells on and above the diagonal (8,1), (7,2), (6,3), ..., (1,8).
0:09:45 The diagonal (8,1), (7,2), ..., (1,8) cannot contain reference cells, because then a 9 would have to be written into these cells and each of these cells is also on a arrow again. But as we have shown, no reference cell exists in Row or Column 9. In general: We cannot have a 9 on an arrow.
0:12:51 In line 5, the two cells (5,1) and (5,2) cannot be reference cells, since they would then have to be 6 and 7, which does not work due to the given 6 and 7.
0:15:53 We cannot have 8 on an arrow, since that would reference cells in row and column 8, but there are no reference cells in row or column 8. Therefore we get rid of the reference cells (7,1), (6,2), (2,6) and (1,7).
0:17:29 We cannot have a 7, 8 or 9 on an arrow. Therefore in Box 9, we have a [7,8,9] triple.
0:23:55 In Box 9, we have a [1,6] pair to reference the cell (6,1) or (1,6).
0:25:25 In box 9 we now have to place the numbers 2,3,4 and 5, which will all land on an arrow. Obviously, we cannot have a [4,5] pair on an arrow, since neither (5,4) nor (4,5) can be reference cells. Also, we cannot have a [2,5] pair on an arrow, since then the other arrow would have to be a [3,4] pair. From this it would follow that we would have 3 times the 7 on the diagonal (6,1), (5,2), (4,3), ..., (1,6), but the diagonal is only in two boxes, so we can only have two times the 7 on this diagonal.
So finally in Box we have a [3,5] pair and a [2,4] pair in addition to the [7,8,9] triple and the [1,6] pair.
0:29:38 The [2,4] pair in Box 9 points to a 6 in (2,4) or (4,2). The [3,5] paair in Box 9 point to a 8 in (3,5) or (5,3).
0:30:05 Cell (3,3) on the tip of an arrow cannot be a 6 because we can only have one reference cell in column 6. It has to be a 1, the only possible position for a reference cell with a 6 in (2,4) or (4,2).
0:32:10 From here on it is very simple.
Simon not being able to see given digits when doing sudoku always makes me laugh
I wonder if you ever get burnt out doing a constant two videos a day, then I realise I like to do 4-5 puzzles during my day
But imagine sitting down for an hour walking an invisible audience through it. That’s a lot of work.
@@johndaily263 I don't know if it's the CtC effect, but I've caught myself a few times thinking out loud
31:22 you can take the 6 out early in the video anyway because the other 2 would have to be a 1
Enjoyed this puzzle very much. 55min for me, Beautiful logic!
Have to say, Simon, it was in no way a mistake to have started in the top left corner and uncovering that diagonal patterning of the possible referenced cells. Without that dive into the underlying patterns of the whole (and they were not obvious!), I don't know how fruitful it would have been working out the possibilities of box 9.
Without your very delightful help I would never have realised how not having a 9 on an arrow knocked successively at 8s and 7s. Well, not in under a week of intense staring, without toilet breaks.
What an incredible puzzle!! Thank you so much for this, it's a day-maker
Wow! A fascinating puzzle and brilliant solve! So great...
Genuinely great puzzle. Loved it.
This is an incredibly cool puzzle, which I'm quite pleased to have solved successfully.
I love to see Simon completely ignore the giving digits while doing sudoku
I remember him saying in another video that he is getting so used to empty grid sudoku that he is turning blind for black digits. Since practically all digits are blue.
27 minutes into the video, and not sure if Simon catches onto this idea, but thinking about how many of each number can appear on the arrows helped limit some options. Could 6 go into r3c3? No, as you can only have one 6 for the column option, and one for the row option. Putting 6 into r3c3 would mean require two values in column 6, when we only have 1 option. Likewise, when looking at box 9, not only can 9 not go onto an arrow, you can immediately see 7 and 8 were ruled out as there were no longer valid answer cells in those columns and rows.
Taking this a step further, can both r2c4 and r4c2 be a 6? No, because there is only one answer cell in column 6. So of the three arrow cells on that diagonal, only one can be a 6.
One thing I like about variant sudoku is how different rulesets play to different people's strengths.
What an incredible puzzle. Definitely one of my favourite videos, up there with sudontku and balanced loop.
I'm new to sudoku and variant sudoku and this was so much fun! The joy I feel when I make breakthru in logic solving these is quite amazing. This was a brilliant puzzle, thank you for sharing this. :D
63min for me! An amazing solve, one of the best puzzles I've ever done!
I really like the concept of cordonates sudoku, it reminds me of the slingshot one you did earlier
And i really like the meta from preventing 9/8/7 from being on arrow, cause if we answered the question once, we answered it for all the puzzle
One of the things I really love about these videos is getting to experience the beautiful logic underlying puzzles I would never, ever be able to solve on my own without oodles of ugly bifurcations.
Very nice variant , a new one where i didnt need to watch the video for further explanation.
Still amazes me the mental math/memorye these guys have....ive written so much on the side. And
Managed to ask the right q? (#1s) before watching their video.
Also found it interesting he didnt color the arrows to track the sums
28:30 My jaw literally dropped. Very cool deduction!
Piatato setting this puzzle ..."If I put this 1 on two arrows it'll flummox Simon" *laughs in evil*
Brilliant. Excellent.
Being someone’s 3 in the corner is actually the cutest thing I’ve ever heard. May we all hope to experience a love like that
On behalf of Nicole, I can confirm that she was deeply shocked by appearing on the channel, and extremely happy at the same time 😅 Thank you to Simon for making this possible!
Very nice puzzle. Took me 1:08:31, after a few backtracks due to transposition errors.
I thought I was progressing well through this one until I got to a cell with no options left. So I watched the video for a while until it eventually clicked that the arrows are row->column, not x->y! Then I just had to rewind a long way and it went though cleanly on the second attempt.
This puzzle is absolutely amazing
genuinely clever puzzle with such a satisfying solve path. i would never have been able to do it, but the solve is gorgeous
This one felt like some kind of eldritch magic as I solved it.
Beautiful puzzle
Can't believe it...
Simon has choice of around 27 colours.
"Let's use red again!" 😂😂😂
You said it best, Simon, "completely gorgeous"
what an incredible solve of an incredible puzzle
been looking at this thing since the reveal, and at 4:30 I've concluded that an arrow cannot ever end in 7,8, or 9 in this puzzle - which is a reasonable restriction to start with.
Attempted a solve, got about 15 minutes in and got stumped at 20 possible clued cells, and box 9 pencil marked. There's some big chain of consequences that forces cells and number pairs, and I was too distracted to get all the way into it.
30:40 ahh, there's the step I didn't quite reach, concluding that 1 goes in r3c3. I'm guessing things start to collapse from there.
Epic puzzle yet again. Mark needs a shout for finding this gem.
The key to this one for me was realizing how limited the numbers that can go on arrows are. 9, 8, and 7 immediately get ruled out. 6 only has two possible combinations, and 5 only has 3 (1,5 gets eliminated by the given 6)
Once you find the higher numbers, the puzzle really starts filling itself out, and then you realize that the remaining arrow boxes must be 1, 2, 3, or 4. Row 1 fills up, and then the puzzle is a breeze
31:00 A really cool thing is that it's possible to figure this specific thing out really early in the puzzle, before even touching box 9!
If r3c3 is going to be referenced, it will be a 6, and because it's on the end of two different arrows, there would need to be two DIFFERENT cells in column 6 that can be referenced. r1c6 is possible, but r2c6 would put an 8 on an arrow which would then put a 9 on an arrow, and r3c6 is worse, and everything beyond that is too big. So there can only be 1 arrow that ends in 6 in the entire puzzle, and so referencing r3c3 to put a 6 there is impossible from the very beginning purely by arrow geometry.
EDIT: I also really highly recommend the Pen Tool for notating Marked cells (eg: referenced cells). A simple click in a cell will give you an O of a color of your choice, and having that separate from the actual coloring of the cells helps me keep things straight, letting me color freely while still keeping my Important Cells clear
1:00:00 The trick for the 1s, I think, and for a lot of this puzzle, is to keep straight whether a digit needs to go at the beginning of an arrow or the end of an arrow, and to think about those separately. It's true that we need at least 8 1s on arrows, but it's more useful to recognize that we need at least 5 1st specifically at the beginning of arrows. You've got 2 already, and 4 more possible, but two of those 4 would produce 1-1 arrows, so one of those two will be true and the other won't, and the two remaining possibilities must be forced (and this also eliminates the possibility that r1c3 is a 4, since we can't squeeze in another 1-something arrow to reference it)
You kept saying you "should have started" in the bottom right, but I disagree: You just ("just") needed to use your green more. Start looking at which row/column combos are possible by just looking at your green cells (which of course requires you to do the work you did to make them green in the first place)