That central nine was looking you in the face the whole time, when you said it was a seven- nine pair it killed me because you placed it in a row that already had a nine!!
Simon at 12:34: "now what does it mean?" Me as a gaming-nerd in front of my computer: "the numbers mason, what do they mean?" Simon literally 2 seconds later: "the numbers mason, what do they mean?" made my day
I find this especially weird because the literal last video I watched before watching this was one from Feb 2020 of someone posting the video of "Mason finding out what the numbers mean," which was the campaign mission where you limp through the hospital remembering what really happened. Love it!!!
What is also absolutely mind boggling to me is that Simon does all that advanced logic in such a short amount of time - and doesn’t see all the ‘normal’ logic just sitting there. PS: Loved the puzzle. It’s a masterpiece!
There comes a point when solving these sorts of puzzles usually where the special rules become meaningless but Simon seems to like to continue to use the special logic even though it could probably be solved quicker if he just played like normal sudoku
@@forkevbot Ignoring the low hanging fruits towards the end is quicker. Simon is focused on finding the next step in the chain of logical tricks that are interconnected and ultimately fill all the boxes. He knows he could have resolved the 9 before but he just doesn't care. If you go into endgame forgetting all the advanced logic (special or not) and expect to finish using only naked singles, you're going to be slower.
Uses the 7 as an example of a king move, fails to apply it when solving the puzzle. He is sometimes so focused on something else that he overlooks the easier things haha
I don't understand this king move constraint. Does this mean that no digit can be the same as any square in a neighbouring box that a king could move to? And are you saying he doesn't abide by this rule in his solution?
@@waterkingdavid yes, and no. they mean that he oversees it sometimes, which is natural at some point when many steps are possible. They just mean they spotted something which the guy in the video doesnt instantly solve. Not very clever of them tbh...
Li Hua actually the point of the comment was not what you have interpreted. I don’t know how you even got that interpretation.. clearly not very clever.. he’s saying even though he used that as an example he didn’t actually remember that it applied until later on. Clearly you aren’t very clever.
@@aurockson2696 Your quote "he didn't actually remember" seems to be in contradiction to his quote "he is sometimes so focused on something else that he overlooks the easier things". 'to overlook' you interpreted 'to not remember' and I interpreted 'to oversee'' Could you actually explain how your interpretation is more plausible than mine?
It amazes me when you catch something that I would never have seen on my own but miss the glaringly obvious numbers that can be resolved. Especially when you use patterns that I would never have noticed in order to resolve the numbers that could have been resolved in a much simpler way.
An easy way to make some of those is to try different things with an automatic solver. It would tell you if there's a unique solution and what kind of moves are required to evaluate the difficulty. Then, you can do a manual solve too and check it's accessible enough for your target.
@@florentcastelli Agreed. While this might sound a bit cynical, I doubt much analysis was used to create this sudoku. I'm guessing the creator has a computer program that can validate any sudoku using various constraints. So he played around with some patterns until he found one that had a unique solution.
@@zanti4132 still just come up with the Idea to make these Patterns, especially with ones like these you'd be very lucky if it just randomly falls into you lap when you're having a program spit out patterns
Emir Akaydın it’s been bothering me since the early game where at some point there could be only 2 positions for the 9 in the center square but he was trying to find digit with 3 possible positions everywhere else.
I was struggling a while because I went at this without even realizing it was a king sudoku. Without the King Sudoku property this is almost immediately unsolvable. With the King restriction, it becomes much more of a piece of pi.
Without the king's move restraint, there are over 2500 possible solves of this puzzle. I didn't know that at first as I just copied the puzzle from the thumbnail.
Yeah I had exactly the same! I finished 4 numbers, then stared at the thing for 10 minutes until I looked at the video and saw the extra rule :D Went quite fast after that cause I had so many pencil marks already
i love simon's soft and comforting voice i love listening these without watching (atleast rewatch the old ones to listen) as its perfectly calming background noice to fill in the silence
Wow... this setter's puzzles never seem to disappoint. That was a brilliant puzzle, took me 49:09. Really should have been quicker, but after watching the video solve I think I got stuck at two points 1. Slow to notice that r7c4 had become a naked single (1) after placing the 2 in the middle box 2. Couldn't figure out that r7c6 couldn't be a 4... had to resort to much more complex chaining to complete row 7. Always amazes me how Simon&Mark can spot logic like this so quickly. Looking forward to the next video, as always!
I'm just getting into Sudoku, and you're seriously a genius. I just found your videos too, and I REALLY appreciate you not only doing these puzzles, but explaining your thought process through them, i can tell this is going to help my game a lot. Thank you.
Last year I started to do sudoku puzzles on the bus and during free time in class, and solving them has always been satisfying and fun, but this channel has gotten me actually hyped up over these puzzles
Brilliant. Took me 56 minutes, I had to locate one mistake I had made. Darn, brilliant sudoku! I became excited to do these Sudokus for about week ago, when UA-cam's algo put one Cracking the cryptics Sudoku video to the suggested video list.. :'D And now I'm hooked.
I tried to solve this as well but I only continued watching the video whenever I got stuck so I could check to see what you would do. It took me an hour and 20 minutes! I’m so impressed by how fast you are at this! You have a new subscriber now!
As far as making this puzzle: There are several degrees of freedom that could be used to tune what looks like a crazy unlikely initial setup: The starting point of pi could have been anywhere on the circle, to make 20 possible puzzles. The circle could have been larger, using 24 digits. 44 possible puzzles. The final central digit could be present or absent. 88 puzzles. Any number of variant rules could be used. Lets guess a dozen options. That's over a thousand initial setups to choose from. Use a computer solver to crank through them and find one with a unique solution, and bam! You've got a circle pi sudoku that looks pristine and lovely.
I've been working on my own pi day puzzle involving the digits of pi arranged roughly in a circle around the grid, and of course the master Aad had to show me up. :P I was already blown away by this construction, and then when you pointed out that the central 6 was in fact the next decimal digit and not just a random digit to make the puzzle work, I was absolutely floored. Rarely do I see a puzzle so elegant that it blurs the line between creation and discovery-- did the setter create the puzzle from nothing, or discover that this intuitive arrangement happens to be uniquely solvable? Either way, extreme respect to Aad for this work of genius.
Usually when he says "sorry you're probably seeing something I'm not." its like nah bro you cool but the 9 there then eventually the 7 were staring daggers into me. btw Simon, its totally cool not to see something stick out to you immediately, we don't mind. no apologies necessary. :)
I was like wow that r5c4 I can never saw that on my own, then "the 9 shift upward" wait there is a 9 in r5c9, okay simon just missed that. Put 7 on r4c3, then later "the 7 shift upward" *facepalm* XD
I needed a bit of help in places (8th digit), but managed to crack it in 48 min. Was never really into Sudoku before finding this channel, but gotta say, just listening and solving along has made me a much better solver really quick. Think I might have to get the Chess Sudoku app
12:40 haha I really didn’t expect that reference, for some reason I thought you only played sudoku and chess and stuff, so a CoD reference completely caught me off guard 😂
I had a lot of fun with this one. Thanks for featuring it. I got slightly lucky with the 8th digit. I was looking for naked singles, and r5c4 was the first possibility I looked at. I had it as 25 for a moment, then something made me look at the 5s and there it was. Really cool logic, the kind of thing that has made chess Sudokus (and related types with additional geometric constraints) my favorites lately. I need to get that app! Cheers.
I've recently discovered your channel and just wanted to say how much I've enjoyed playing along with you while having breakfast the past few days. Look forward to more!
That’s brilliant, this is the reason I love sudoko and also love maths (even though it was never my strongest). I’m so pleased that I found this channel.
"The numbers Mason, what do they mean" from that 1 line you've become 1 of my favourite youtubers just because of that throw back to 1 of, IF NOT the BEST COD game.
Very predictably I got stuck before the eighth digit ... And again later on around the twentieth digit ... Watching video now. Beautiful puzzle! Thank you very much, Aad and Simon!
I was expecting it to be much worse for the 8th number, but honestly knowing the Kings sudoku constraint makes it pretty easy, I’d only see myself struggling if I didn’t know or forgot it was part of the puzzle. I’m so happy to have found this channel, I love sudoku so much and these puzzles and your method are really entertaining. Gonna download chess sudoku for some fun times
Really found myself mesmerized as you worked through this puzzle--and very pleased that not only did I follow every step but was sometimes able to foresee several on the way. Really well done! (The King variant is a new one for me and I found it very helpful.) Thanks, and best wishes.
I discovered this channel yesterday and spent my whole day solving puzzles. My mum had to come check on me to see if I was okay. As soon as I can afford it, I'll be purchasing their chess sudoku app.
Wow! Those hidden singles really got me! Once I found both the hidden singles, the rest of the puzzle fell into place. Good challenge without being too difficult.
I just started yesterday watching these videos. I love sudoku but I never knew there were such crazy sudokus out there. My brain can't process yet the begining process on them, but once the video is going and the begining is done, I start to see the number quickly. I have to work on the starting process definately
Marvelous puzzle, and yes, I also struggled with the 8th digit. But kind of frustrating to see how fast you, Simon, was able to solve it. Here's a tip, Simon. When you miss one digit in a row, you simply add up all the other 8 digits, and subtract the result from 45. The sum is the then the digit. Just kidding :-) I am amazed how people only comment on things you miss out, like the 9 in R4 - and thats mostly things that is not really important for the flow/path to break the puzzle. Great puzzle, great work and great channel!
This one was great. Iv put it on paper and tryied to solve it before watching video. First 7 digits were easy, but I got 3 in the 9-th upper row in the those first 7 digits. He solved it latter. That 8-th digit was a bit struggle as time consuming part to crack down. Rest was straight forward. I use stopwatch for this type of puzzles, because I know I will crack it, but I just want to be faster. When you are solving sudoku for 15+yrs, your goal is not will you crack it as speed of solving it. He would solved it faster if he wasnt explaining his logic and every move. Keep up, great content. 💪
this was the first sudoku from your website that I actually solved, it took me 2 hours and 19 minutes frustrating at some times, but probably because it requires much more skill than I currently have
I spent 40 minutes (20 minutes just looking at the screen with the same digits in the same place and no new ideas) and then started the video. When I saw the logic you used for the 2 in the middle box I felt so dumb... I've already solved a good amount of your sudokus without the need to see your strategy, but this time I was completely clueless. Awesome!!! (and also frustrating)
I feel so smart when I see something to fill before you enter it, even though I wouldn’t be able to fill out any of it until after you’ve done a bunch 😂
Nobody is going to see this because I’m late, but this is actually the first 21 digits of pi because the 6 in the middle is the next digit. Just thought it made it even cooler :)
The 6 is the 20th digit of pi (as he also mentioned). I do understand that if you count all digits it's 21 digits but usually when you're speaking of digits of pi you only count the decimal places :)
How I wish I could recollect pi, "Eureka!" cried the great inventor, Christmas pudding, Christmas pie, Is the problems very center. It's a nice touch that the number in the center is the 6 and last digit of this verse. What an amazing coincidence indeed.
It took me 6 hours (to be fair, I watched netflix and slacked off) but I did it! Finding the 2 in column four was what stumped me, but after seeing how you put it together it was smooth sailing. I feel like I'm improving so quickly!
The elimination of the possibility of a 4 in r7c6 in around 16:24 mark cracks the puzzle wide open! That pattern was quite unique to king's move and would note that moving forward when trying out Chess Sudoku
As a computer scientist, I can answer how one could figure out a potential sudoku is one. You encode the sudoku rules in a Boolean formula (contains Boolean variables and connectors AND, OR). You can also encode various additional rules like the king's move, knight's move, whatever you can think of. Then you encode the starting digits and run a program called a SAT solver. (SAT stands for satisfiability and is the name computer scientists use for the task to decide if there is a choice for the Boolean variables in a given formula so that it evaluates to TRUE.) Common SAT solvers also tell you whether the solution they found is the only one. So, potentially, you plug in the numbers and test various additional rules with a SAT solver. If you're lucky, for some additional rule the solver responds that there's a unique solution.
I solved it but I needed help twice. What surprised me is while I needed up for the 8th digit, my 8th digit was one of the last digits he filled in. I should have been able to see there was only one number to go into it but I never notice it until I saw him say these two squares has to be 23 and 29. Once I realize how he knew that, the 8th filled itself in. I got a little further but was stuck again. I needed him to explain how the triangle of 5 possibles on the left affected where a 5 could be in the center squares. Even though my board look quite difference from his, that bit of information allow me to solved the rest of the puzzle on my own.
I started it immediately after hearing the rules, got stuck on the 8th digit for about 10 minutes just looking around and eventually penciling a bunch of stuff in out of desperation. Gave up and came back to see you crack it, nice to know at least the getting stuck part wasn't just me lol.
It's fascinating just how absolutely necessary the king's move constraint it. From when the the 2 goes in r5c4 at around the 13 min mark I could (and did) find this sudoku playable. But my sudoku app, which does not have the constraint, did not admit that a unique solution could exist until the 8 goes into r6c5 at 19:07 almost at the end.
I’m a new subscriber and these puzzles are crazy! I’ve been practicing my sudoku and have tried some of the puzzles on the channel. I have more practicing to do!
I tried this on my own before watching the video, got 7 digits, stared at it for about half an hour without finding anything else, then decided to come back and watch the video and one of the first things you said was that the 8th digit was a struggle. Well, I'm glad that it's not just me!
Interestingly, I got a different solution! Is what I would have said before double checking. Apparently, the web app doesn't account for the additional rules of "King's Move", so the confirmation didn't see my faulty solution :) Great channel guys!
You can actually crack the three in the center square much faster. Immediately with the first solved digit, it is clear that the three in the middle square is in the top-right corner, because the bottom-right corner, the only other place the three could go under classic Sudoku logic, is checked with King's move by the three that we've placed in the top-right corner of the bottom-left square. This solves the three in the bottom-left corner of the center-right square one digit faster as a result.
I got stuck after 7 digits. I even had most of the same pencil marks as Simon. And while I didn't make the leap to writing in the eighth digit on my own, I did see it before Simon articulated it in the video. Slowly but surely, I'm getting a little better at sudoku with these videos.
Find you someone who compliments you like Simon compliments sudoku puzzles and their creators
I believe if my dogs could talk, they would be exactly like that!
If you marry them, will they go "if I put it here, it would... yes, that goes there"?
@@iamtrash288 I'm sorry but do you mean putting on the ring or ...well... the wedding night?
@@reBekks I honestly don't know. I just wanted to make a vague joke, as for what you think I mean, well... It's up to you
@@reBekks It applies to many situations, including stir fry and gardening
That central nine was looking you in the face the whole time, when you said it was a seven- nine pair it killed me because you placed it in a row that already had a nine!!
Same Here :D
I guess it's just the watchers curse...
add there was already a 7 in the other row as well
He also does some very complex pencil marking while having multiple rows/columns with 8 digits already filled in
20:07 Yeah, we noticed.
Same here, I was sitting on that for ages
Simon at 12:34: "now what does it mean?"
Me as a gaming-nerd in front of my computer: "the numbers mason, what do they mean?"
Simon literally 2 seconds later: "the numbers mason, what do they mean?"
made my day
imagine explaining to my past self, that watching a man solve sudoku puzzles on youtube is the one thing getting me through lockdown. 2020 is wild
Imagine my past self explaining to my now or future self that this channel is what I need to get me through the pending lockdown.
I know, right? 🤯
Wanna try watching him again?
please make a eye tracker solving a sudoku puzzle we loved to see that!! i am curious how fast you look the lines numbers and boxes
he is looking just a little toooooo fast... because he oversees the obvious... but still solving it but slower than he could be
Just having that extra information along with his thought process would be fantastic - great suggestion.
Maybe when he grow bigger... eye-trackers range anywhere from $100-$75,000, most consumer models are around $800.
this sounds like it would actually be really interesting
@@jakelabovitz9646 I hope he can borroe an eyetracker from someone.
You’re killing me with this central nine! XD What an impressive puzzle overall though.
I was in agony after he declared it a 79 pair.
i saw it as an x wing and i kept jabbing my finger in the screen saying “nine!”
he is doing it on purpose... i watched more the 70 videos and is a subliminal trick to avoid the obvious so we can watch the video like fools
@@Lexhanson same.
I was also screaming at the 9
12:40 The numbers mason! haha loved that
The nostalgia
I find this especially weird because the literal last video I watched before watching this was one from Feb 2020 of someone posting the video of "Mason finding out what the numbers mean," which was the campaign mission where you limp through the hospital remembering what really happened. Love it!!!
Just got to the comments to see if someone commented about the numbers xD
I wouldn’t expect a Black Ops reference here but it is a welcome one
I blacked out when I heard it for a solid 5 seconds and just had some good old memories XD
What is also absolutely mind boggling to me is that Simon does all that advanced logic in such a short amount of time - and doesn’t see all the ‘normal’ logic just sitting there.
PS: Loved the puzzle. It’s a masterpiece!
he is doing it on purpose
There comes a point when solving these sorts of puzzles usually where the special rules become meaningless but Simon seems to like to continue to use the special logic even though it could probably be solved quicker if he just played like normal sudoku
ringingwowme if you solved it and missed a king move...you didn’t solve this sudoku.
@@ringingwowme I guess their new Chess Sudoku app checks the additional chess contraint, as well and the standard Sudoku rules?
@@forkevbot Ignoring the low hanging fruits towards the end is quicker. Simon is focused on finding the next step in the chain of logical tricks that are interconnected and ultimately fill all the boxes. He knows he could have resolved the 9 before but he just doesn't care. If you go into endgame forgetting all the advanced logic (special or not) and expect to finish using only naked singles, you're going to be slower.
Simon: The numbers Mason! What do they mean?
Me: You have a new subscriber
Same
@Dizzy Gear where is it from? Sorry haha
@@felixschonherr5612 i believe it's from Call of Duty Black Ops
@@laurainc Yup, great quote and great game.
I actually laughed out loud when he said that
I love how when he gets excited about the complexity of the puzzle he completely forgets about basic regular sudoku rules lmao
*cough cough* central 9 *cough*
@@audreycuzwhynot5646 and the seven paired with it 😂
“Good Grief!”
*aggressive keyboard typing*
I laughed so hard
Uses the 7 as an example of a king move, fails to apply it when solving the puzzle. He is sometimes so focused on something else that he overlooks the easier things haha
Literally what I was about to comment.
I don't understand this king move constraint. Does this mean that no digit can be the same as any square in a neighbouring box that a king could move to? And are you saying he doesn't abide by this rule in his solution?
@@waterkingdavid yes, and no. they mean that he oversees it sometimes, which is natural at some point when many steps are possible. They just mean they spotted something which the guy in the video doesnt instantly solve. Not very clever of them tbh...
Li Hua actually the point of the comment was not what you have interpreted. I don’t know how you even got that interpretation.. clearly not very clever.. he’s saying even though he used that as an example he didn’t actually remember that it applied until later on. Clearly you aren’t very clever.
@@aurockson2696 Your quote "he didn't actually remember" seems to be in contradiction to his quote "he is sometimes so focused on something else that he overlooks the easier things". 'to overlook' you interpreted 'to not remember' and I interpreted 'to oversee'' Could you actually explain how your interpretation is more plausible than mine?
It amazes me when you catch something that I would never have seen on my own but miss the glaringly obvious numbers that can be resolved. Especially when you use patterns that I would never have noticed in order to resolve the numbers that could have been resolved in a much simpler way.
14:40 "im desperatly trying not to miss things here
/is missing a realy obvious 9 in the center box that mus be in the top right/
I have been staring at that ever since he eliminated the other places in that square
Me shouting at the screen...
I was about to kill myself. He didn't relise lol
Also a 1
Wasn't expecting a CoD player.
It caught me so off guard lol
charlyozy I legit read this the moment he said that lol
When did he say it?
@@congobongoproductions5476 12:40
@@gabriel_talih same
That puzzle is amazing, do any of the setters make videos on how they put these together? I think that'd be really interesting to watch.
Mother nature put this one together. Art just discovered that it worked - somehow.
An easy way to make some of those is to try different things with an automatic solver. It would tell you if there's a unique solution and what kind of moves are required to evaluate the difficulty. Then, you can do a manual solve too and check it's accessible enough for your target.
@@florentcastelli Agreed. While this might sound a bit cynical, I doubt much analysis was used to create this sudoku. I'm guessing the creator has a computer program that can validate any sudoku using various constraints. So he played around with some patterns until he found one that had a unique solution.
@@zanti4132 still just come up with the Idea to make these Patterns, especially with ones like these you'd be very lucky if it just randomly falls into you lap when you're having a program spit out patterns
The first numbers he completed were 3 and 1
15:53
The next number he finished was 4
19:12
314
3.14
That's kind of mind blowing
He finished the 1 first
@@ZiRR0 shh
15:51 he actually completed all the 1’s first
Still a brilliant observation ...
missing that 9 in the middle is really painful to watch :)
Emir Akaydın it’s been bothering me since the early game where at some point there could be only 2 positions for the 9 in the center square but he was trying to find digit with 3 possible positions everywhere else.
And the 7 could not go in the top right corner 18:07
From the very beginning that was killing me.
I was struggling a while because I went at this without even realizing it was a king sudoku. Without the King Sudoku property this is almost immediately unsolvable. With the King restriction, it becomes much more of a piece of pi.
Ugh I laughed
Without the king's move restraint, there are over 2500 possible solves of this puzzle. I didn't know that at first as I just copied the puzzle from the thumbnail.
Yeah I had exactly the same! I finished 4 numbers, then stared at the thing for 10 minutes until I looked at the video and saw the extra rule :D Went quite fast after that cause I had so many pencil marks already
You got a hearty chuckle out of me with “the numbers mason what do they mean”
I’m just as blown away as Simon that a simple kings move restraint let’s the puzzle work. It’s genius
i love simon's soft and comforting voice
i love listening these without watching (atleast rewatch the old ones to listen) as its perfectly calming background noice to fill in the silence
I don’t know why YT decided to throw sudoku into my feed, but I’m loving it
Wow... this setter's puzzles never seem to disappoint. That was a brilliant puzzle, took me 49:09. Really should have been quicker, but after watching the video solve I think I got stuck at two points
1. Slow to notice that r7c4 had become a naked single (1) after placing the 2 in the middle box
2. Couldn't figure out that r7c6 couldn't be a 4... had to resort to much more complex chaining to complete row 7.
Always amazes me how Simon&Mark can spot logic like this so quickly. Looking forward to the next video, as always!
I'm just getting into Sudoku, and you're seriously a genius. I just found your videos too, and I REALLY appreciate you not only doing these puzzles, but explaining your thought process through them, i can tell this is going to help my game a lot. Thank you.
Last year I started to do sudoku puzzles on the bus and during free time in class, and solving them has always been satisfying and fun, but this channel has gotten me actually hyped up over these puzzles
Also, the first 3 digits to be completed were 3 1 & 4 😮
It was 363
@@lanychabot-laroche135 Completed as in fully placed
@@tinynewtman yeah it was 363
@@nikolaykomissarenko7822 They're saying that the first 3 numbers to be fully placed were 3 1 and 4. Although the 1 was done before the 3.
@@Golladan 5:45 it goes 363315, pay attention
Brilliant. Took me 56 minutes, I had to locate one mistake I had made. Darn, brilliant sudoku! I became excited to do these Sudokus for about week ago, when UA-cam's algo put one Cracking the cryptics Sudoku video to the suggested video list.. :'D And now I'm hooked.
This sudoku is such an improbable delight! Thanks Aad and thank you for honouring him and putting it in the spotlight! Amazing solve as well. :)
My son was born on this day, and ever since he found out that Pi Day was a thing, he always has birthday pie, not cake.
I tried to solve this as well but I only continued watching the video whenever I got stuck so I could check to see what you would do. It took me an hour and 20 minutes! I’m so impressed by how fast you are at this! You have a new subscriber now!
As far as making this puzzle: There are several degrees of freedom that could be used to tune what looks like a crazy unlikely initial setup:
The starting point of pi could have been anywhere on the circle, to make 20 possible puzzles.
The circle could have been larger, using 24 digits. 44 possible puzzles.
The final central digit could be present or absent. 88 puzzles.
Any number of variant rules could be used. Lets guess a dozen options. That's over a thousand initial setups to choose from.
Use a computer solver to crank through them and find one with a unique solution, and bam! You've got a circle pi sudoku that looks pristine and lovely.
with rotational symmetry, some starting points are either all valid or all invalid. you don't need to check all 20 starting point variations.
I've been working on my own pi day puzzle involving the digits of pi arranged roughly in a circle around the grid, and of course the master Aad had to show me up. :P I was already blown away by this construction, and then when you pointed out that the central 6 was in fact the next decimal digit and not just a random digit to make the puzzle work, I was absolutely floored. Rarely do I see a puzzle so elegant that it blurs the line between creation and discovery-- did the setter create the puzzle from nothing, or discover that this intuitive arrangement happens to be uniquely solvable? Either way, extreme respect to Aad for this work of genius.
That stand alone nine in r4c6 sat there haunting me for a very long time (in you missing that nine in r5c9) :(
Usually when he says "sorry you're probably seeing something I'm not." its like nah bro you cool but the 9 there then eventually the 7 were staring daggers into me.
btw Simon, its totally cool not to see something stick out to you immediately, we don't mind. no apologies necessary. :)
I was like wow that r5c4 I can never saw that on my own, then "the 9 shift upward" wait there is a 9 in r5c9, okay simon just missed that.
Put 7 on r4c3, then later "the 7 shift upward" *facepalm* XD
he is doing it on puprose
did it myself in a little more than one and a half hour… impressive how fast Simon spots the interesting points in those puzzles!
I needed a bit of help in places (8th digit), but managed to crack it in 48 min. Was never really into Sudoku before finding this channel, but gotta say, just listening and solving along has made me a much better solver really quick. Think I might have to get the Chess Sudoku app
It just occured to me that your voice is (unintentional) ASMR material. No wonder I keep coming back to these videos!
12:40 haha I really didn’t expect that reference, for some reason I thought you only played sudoku and chess and stuff, so a CoD reference completely caught me off guard 😂
I had a lot of fun with this one. Thanks for featuring it.
I got slightly lucky with the 8th digit. I was looking for naked singles, and r5c4 was the first possibility I looked at. I had it as 25 for a moment, then something made me look at the 5s and there it was. Really cool logic, the kind of thing that has made chess Sudokus (and related types with additional geometric constraints) my favorites lately. I need to get that app!
Cheers.
I can't even do Sudoku consistently and I'm not even sure how this is as entertaining as it is but I'm already binging this channel
I've recently discovered your channel and just wanted to say how much I've enjoyed playing along with you while having breakfast the past few days. Look forward to more!
I started playing sudoku out of boredom in quarantine and this channel has helped me learn a ton about it. Also quoting BO1 was absolutely magical.
That’s brilliant, this is the reason I love sudoko and also love maths (even though it was never my strongest). I’m so pleased that I found this channel.
12:40 That was NOT a reference I was expecting. Who knew Simon played Black Ops?
It's become a pretty mainstream reference, I've never played Black Ops but still hear it quite often.
He is a big StarCraft fan and has a video called 'the numbers Simon what do they mean?', so yeah, we are in the presence of a gamer XD
the nines and the seven in the middle box though, getting me to my nerves
"The numbers Mason, what do they mean" from that 1 line you've become 1 of my favourite youtubers just because of that throw back to 1 of, IF NOT the BEST COD game.
Very predictably I got stuck before the eighth digit ... And again later on around the twentieth digit ... Watching video now. Beautiful puzzle! Thank you very much, Aad and Simon!
This mans genius is beyond me, so I was happy when I solved the 9 in column 6 at 13:20 and noticed he too can miss things.
I was expecting it to be much worse for the 8th number, but honestly knowing the Kings sudoku constraint makes it pretty easy, I’d only see myself struggling if I didn’t know or forgot it was part of the puzzle. I’m so happy to have found this channel, I love sudoku so much and these puzzles and your method are really entertaining. Gonna download chess sudoku for some fun times
Solving it wasn't too tricky but what a genius puzzle.
Hats off to the creator, that was simply brilliant.
Really found myself mesmerized as you worked through this puzzle--and very pleased that not only did I follow every step but was sometimes able to foresee several on the way. Really well done! (The King variant is a new one for me and I found it very helpful.) Thanks, and best wishes.
I did need 4 h and 50 min to solve this with small coffee brakes. This was hard and you have done this in under 16 min, wow you are so fast :-D
Coffee brakes? Sounds like something I'd give my car.
I discovered this channel yesterday and spent my whole day solving puzzles. My mum had to come check on me to see if I was okay. As soon as I can afford it, I'll be purchasing their chess sudoku app.
Wow! Those hidden singles really got me! Once I found both the hidden singles, the rest of the puzzle fell into place. Good challenge without being too difficult.
I just started yesterday watching these videos. I love sudoku but I never knew there were such crazy sudokus out there. My brain can't process yet the begining process on them, but once the video is going and the begining is done, I start to see the number quickly. I have to work on the starting process definately
There has to be video on how these geniuses make these puzzles. I bet that is more fascinating than actually solving it.
Marvelous puzzle, and yes, I also struggled with the 8th digit. But kind of frustrating to see how fast you, Simon, was able to solve it. Here's a tip, Simon. When you miss one digit in a row, you simply add up all the other 8 digits, and subtract the result from 45. The sum is the then the digit. Just kidding :-) I am amazed how people only comment on things you miss out, like the 9 in R4 - and thats mostly things that is not really important for the flow/path to break the puzzle. Great puzzle, great work and great channel!
I didn't realize how much i liked sudoku puzzles until i found about this channel !!!
Damn, you know the COD lines. Love it! been enjoying these videos for a while now, learning a lot about Sudokus
This one was great. Iv put it on paper and tryied to solve it before watching video. First 7 digits were easy, but I got 3 in the 9-th upper row in the those first 7 digits. He solved it latter. That 8-th digit was a bit struggle as time consuming part to crack down. Rest was straight forward. I use stopwatch for this type of puzzles, because I know I will crack it, but I just want to be faster. When you are solving sudoku for 15+yrs, your goal is not will you crack it as speed of solving it. He would solved it faster if he wasnt explaining his logic and every move. Keep up, great content. 💪
this was the first sudoku from your website that I actually solved, it took me 2 hours and 19 minutes
frustrating at some times, but probably because it requires much more skill than I currently have
This was a new record for me! Solved it under 2 hours, it was actually quite pleasant, no frustrating moments, I'm just slow :D
I spent 40 minutes (20 minutes just looking at the screen with the same digits in the same place and no new ideas) and then started the video. When I saw the logic you used for the 2 in the middle box I felt so dumb... I've already solved a good amount of your sudokus without the need to see your strategy, but this time I was completely clueless. Awesome!!! (and also frustrating)
Took me exactly 2h to solve. It's amazing to see someone do it in less than 20min while explaining the puzzle.
I feel so smart when I see something to fill before you enter it, even though I wouldn’t be able to fill out any of it until after you’ve done a bunch 😂
I really enjoy your videos man!
Nobody is going to see this because I’m late, but this is actually the first 21 digits of pi because the 6 in the middle is the next digit. Just thought it made it even cooler :)
The 6 is the 20th digit of pi (as he also mentioned). I do understand that if you count all digits it's 21 digits but usually when you're speaking of digits of pi you only count the decimal places :)
Brilliant! Same here - what are the chances that such a puzzle would exist, and that someone would discover it?!?! Mind boggling.
Watched the video after being stuck. Turns out I forgot it was a King Sudoku
I did that too. lol
I just want to thank you for introducing me to this puzzle. I just solved it in 3 hours and i was so happy to find the 2 in the Middle square. :)
I never thought you could make Sudoku not boring, but I must say, this is honestly kind of fun to watch.
12:45 "The numbers, mason, what do they mean?" ... Call of Duty Black Ops 1 Reference?!
Squeaked in just under an hour. Took a while to wrap my head around this one, but it was a fun challenge.
The King constraint (or knowing about it) makes the puzzle easier.
half the time when I play sudoku I mess up somewhere, but I have yet to see this man make a single mistake... absolutely awed
You’ve made me fall back in love with Sudoku again!!!!
What a beautiful way to set this puzzle. Truly wonderful.
This has to be my favourite of all time, followed closely by the symmetry of Rishi Puri's circular masterpiece
I made the "THE NUMBERS, MASON" joke to myself at the exact same time he did it and that makes me unreasonably happy
How I wish I could recollect pi,
"Eureka!" cried the great inventor,
Christmas pudding, Christmas pie,
Is the problems very center.
It's a nice touch that the number in the center is the 6 and last digit of this verse.
What an amazing coincidence indeed.
I don't think I've ever solved an Aad Van Wetering puzzle without help from the video.
It took me 6 hours (to be fair, I watched netflix and slacked off) but I did it! Finding the 2 in column four was what stumped me, but after seeing how you put it together it was smooth sailing. I feel like I'm improving so quickly!
The elimination of the possibility of a 4 in r7c6 in around 16:24 mark cracks the puzzle wide open! That pattern was quite unique to king's move and would note that moving forward when trying out Chess Sudoku
Love your vids and passion for this
As a computer scientist, I can answer how one could figure out a potential sudoku is one. You encode the sudoku rules in a Boolean formula (contains Boolean variables and connectors AND, OR). You can also encode various additional rules like the king's move, knight's move, whatever you can think of.
Then you encode the starting digits and run a program called a SAT solver. (SAT stands for satisfiability and is the name computer scientists use for the task to decide if there is a choice for the Boolean variables in a given formula so that it evaluates to TRUE.) Common SAT solvers also tell you whether the solution they found is the only one.
So, potentially, you plug in the numbers and test various additional rules with a SAT solver. If you're lucky, for some additional rule the solver responds that there's a unique solution.
Amazing to watch you work out sudokus
I solved it but I needed help twice. What surprised me is while I needed up for the 8th digit, my 8th digit was one of the last digits he filled in. I should have been able to see there was only one number to go into it but I never notice it until I saw him say these two squares has to be 23 and 29. Once I realize how he knew that, the 8th filled itself in. I got a little further but was stuck again. I needed him to explain how the triangle of 5 possibles on the left affected where a 5 could be in the center squares. Even though my board look quite difference from his, that bit of information allow me to solved the rest of the puzzle on my own.
This was epic great, love the channel
I'm also a bit stunned that this works as a Sudoku. There really aren't a lot of degrees of freedom in setting the grid.
Me: **Bouncing up and down, pointing at the screen** That's a five! That's a five!
Him: We'll place a five there...
Me: :DDDDDDDD
im gonna be honest this morning i spent 30 minutes on an EASY sudoku. but i still geek out watching these
I started it immediately after hearing the rules, got stuck on the 8th digit for about 10 minutes just looking around and eventually penciling a bunch of stuff in out of desperation. Gave up and came back to see you crack it, nice to know at least the getting stuck part wasn't just me lol.
It's fascinating just how absolutely necessary the king's move constraint it.
From when the the 2 goes in r5c4 at around the 13 min mark I could (and did) find this sudoku playable.
But my sudoku app, which does not have the constraint, did not admit that a unique solution could exist until the 8 goes into r6c5 at 19:07 almost at the end.
18:10 : him marking the 79 combo as if it isn’t obvious where each number goes 🤣🤣
I’m a new subscriber and these puzzles are crazy! I’ve been practicing my sudoku and have tried some of the puzzles on the channel. I have more practicing to do!
I tried this on my own before watching the video, got 7 digits, stared at it for about half an hour without finding anything else, then decided to come back and watch the video and one of the first things you said was that the 8th digit was a struggle. Well, I'm glad that it's not just me!
Interestingly, I got a different solution!
Is what I would have said before double checking. Apparently, the web app doesn't account for the additional rules of "King's Move", so the confirmation didn't see my faulty solution :)
Great channel guys!
You can actually crack the three in the center square much faster. Immediately with the first solved digit, it is clear that the three in the middle square is in the top-right corner, because the bottom-right corner, the only other place the three could go under classic Sudoku logic, is checked with King's move by the three that we've placed in the top-right corner of the bottom-left square. This solves the three in the bottom-left corner of the center-right square one digit faster as a result.
With basic scanning, he can resolve the 7/9 pair! (In a recent video, he explained why he's such a bad scanner: the screen is too close)
I got stuck after 7 digits. I even had most of the same pencil marks as Simon. And while I didn't make the leap to writing in the eighth digit on my own, I did see it before Simon articulated it in the video. Slowly but surely, I'm getting a little better at sudoku with these videos.