"too difficult means it takes them 6 or 7 minutes instead of 4" wow . . . 4 minutes in i have like . a few twos and threes and a couple of pencil marks . . .
I asked Richard at the championship what is the secret of creating hard Classics by hand. Because I also needed one and everything I did just ended up beeing easy to medium. He said „do 10-20 and pray“. And that is the advice from someone who is really one of the best and most experienced puzzle creators in the world. Despite the simplest ruleset of them all, handcrafting classics is really an art. I have no problem creating stupidly hard variants, but I‘m not capable of doing nice classics.
Took me 15 mins but through listing all the candidate cells and finding doubles/triples here and there. A puzzle that is manageable even for rookie solvers. But that 456 trick is really sexy, definitely can trust an expert solver to spot such beautiful tricks.
Hour overall to solve, about twenty minutes was feeding animals, but first one I've solved before the video! Very satisfying, and certainly one that less experienced solvers can tackle with enough time!
When Simon said "no advanced technique" I thought that I better look for triples and unexpected naked singles. That got me to the 9 and 2 in box 2 and the triple 456 in c6. Then I needed to try out digits ("Though shalt not bifurcate") and solved the grid. Now I am watching the video to learn the logic that I missed. Thank you very much!
When he started to point out the 456, I noticed that it was part of a 12345678 across the top left corner of the grid. Don't know where that gets me, yet, though.
Though I did look, I didn't see any specials, ie. X Y wing etc. Seeing the three sets of numbers and how they affect the puzzle was key to solving and if one didn't see them early, speed solving wouldn't work too well. That's if I knew what I was talking about. Great puzzle and another excellent video. A note that might be worth my two cents. When you are solving, you have passed filling cells in the 1st column especially the upper left box when they became givens. Just curious? --- Gene
Managed to solve it without hints in 44 minutes, without spotting any of the 4-5-6, 1-3-8 or 2-5-9 triples, but also without bifurcation. What did help me was a 3-7-8 triple in column 5.
I did the puzzle in about 12 minutes before watching the video. I shamefully confess that I had to resort to entering all candidate pencil marks when Snyder ceased being useful. After that I only had to spot some triples and the puzzle crumbled quickly. Your solve is much more elegant.
4 interlocking NYT hidden triples in one beautiful puzzle. Once I found one I looked for more and did all of them. Puzzle solves in under 6 minutes!!😁😁
By writing down what squares could be I noticed many of the doubles and triples in the three central columns even without noticing the triangle digit tricks. 14:59 solve, beautiful puzzle.
I was wondering if there is a more rigorous definition of "world class". I love sudoku and even more this channel because of the extra level of challenge it has provided. Solving a puzzle can happen with the determined among us and some time. What is a world-class classification and how does that separate itself from other classifications? I'm asking mainly because I want to enter that realm, so some discrete direction would be awesome. :)
whew, only found this channel a few days ago, my methods are a step above caveman status but I was able to do this in just over an hour. Great channel looking forward to more, don't suppose it is sorted by level any way,shape,or form?
I also found a 378 triple in the middle column. It's pretty hard to spot, but I have a tendency to look for squares that are somewhat restricted, and notate them with central notation.
I admit it took me 54:19, and I did list all the possibilities, but, seriously, I'm nowhere near one of the best sudoku solvers. Surely some of them should have been able to spot pairs on lines well enough to place, right? You often find two cells containing the same limitation on numbers in this puzzle, but these cells that are so limited are rarely in the same box. You absolutely don't need to bifurcate, but it's much faster with spotting the tricks involved.
8:34 solve // Not too difficult, but with so many hidden pairs/triples I can see why it might be inappropriate for a tournament speed-solve setting. Thank you for another great puzzle and video.
Sorry mate not to sound rude but how long do you look at these puzzles before you start recording ? (I know once you start solving the rest becomes clearer to solve )
Can someone please tell me a website for determining the difficulty of a sudoku(where I put in numbers),like an engine but not a solver cause some of the extreme puzzles are very similar and boring and I'd be glad to know how difficult it is before solving it.
Not really a hard one for a change, when compared to the rest of puzzles on the channel. Took me 19min, without spotting the 456 triple. Still, a very nice puzzle. :)
Thought you where going to spot the 187 in the left/middle square after you spotted the 295 / 183 / 465 tripples even if the 465 was enough to solve it :)
OMG! I was stuck on this for 2 and a half hours, then i watch the first 7 min of the video and it broke it for me. Finished it in 17 and a half min after that lol
Are savants allowed in the championship? I brought yesterdays puzzle to a meeting today, we have a savant. He looked at it for 5secs, then he could write down the numbers without even looking at it again.
That sounds rather amazing, as solving a Sudoku would take more than say, someone with just an eidetic memory. The more generic definition is any learned person in a field, but I assume you mean someone with Savant Syndrome.
I don't know a lot about sudoku but these videos are entertaining. But there's a 1 in the top left square in the same place as the bottom right square can someone tell me why that is because I thought you couldn't do that
the digits only need to be unique in any one row, column and house (3x3 sub-block.) Relative position within the sub-block isn't restricted in standard Sudoku
@@mawhpawh I assume you know how he got the 138 triple? So there is three squares that can't be any number apart from 1,3 and 8. (The 3 three in the top left makes it so that specific square can only be 1 and 8 but that is irrelevant for 2). On the other in the top middle 3x3 he already found out that there are only two viable squares for the 2 but then one of them could no longer be a 2 because of the 138 triple, hence only one option remained for the 2. Hope this helps.
Ot to be more concise the top middle 3×3 needs a 2. Think about where you can put a 2. It can't be the spots in line with already existing twos and it can't be a spot where there needs to be a 1,3 or 8.
That square was part of the "259" triple he was talking about. The 5 in that row was part of the "456" triple and ALSO part of the "259" triple, therefore has to be a 5. Then in that row the "59" pair becomes a 9. Then the only square left open is the 2; since there is a "38" square and the remaining 3 open squares in the column are in the same block as the "259" triple. Hope this helps.
![[Extreme] A Sudoku With A Sting In The Start!](http://i.ytimg.com/vi/lPpAtnbvVR8/mqdefault.jpg)
"too difficult means it takes them 6 or 7 minutes instead of 4" wow . . . 4 minutes in i have like . a few twos and threes and a couple of pencil marks . . .
I asked Richard at the championship what is the secret of creating hard Classics by hand. Because I also needed one and everything I did just ended up beeing easy to medium. He said „do 10-20 and pray“. And that is the advice from someone who is really one of the best and most experienced puzzle creators in the world. Despite the simplest ruleset of them all, handcrafting classics is really an art. I have no problem creating stupidly hard variants, but I‘m not capable of doing nice classics.
Try the andoku 3 app. It creates very difficult puzzles but they're never pretty.
Took me 15 mins but through listing all the candidate cells and finding doubles/triples here and there. A puzzle that is manageable even for rookie solvers. But that 456 trick is really sexy, definitely can trust an expert solver to spot such beautiful tricks.
Hour overall to solve, about twenty minutes was feeding animals, but first one I've solved before the video! Very satisfying, and certainly one that less experienced solvers can tackle with enough time!
When Simon said "no advanced technique" I thought that I better look for triples and unexpected naked singles. That got me to the 9 and 2 in box 2 and the triple 456 in c6. Then I needed to try out digits ("Though shalt not bifurcate") and solved the grid. Now I am watching the video to learn the logic that I missed.
Thank you very much!
I’ve recently have been having trouble sleeping and I find it that watching your videos calms my mind and helps me sleep at night. Thank you
holy moly that 456 technique was amazing
I missed it and had to bifurcate twice.
When he started to point out the 456, I noticed that it was part of a 12345678 across the top left corner of the grid. Don't know where that gets me, yet, though.
OK, I did it in 30 minutes... "It involves no difficult techniques"... that's true, normally I spent at least 1 hour to solve them...
I got about halfway through this but after seeing your V-shape trick I finished it. Very enjoyable puzzle!
Yeah I tried it and got stuck at that point too but then paused the video and managed to complete it after seeing how to use 456!
21:54, not so bad, but yeah - needed to list all possibilities in cells to spot doubles and triplets across the groups.
I managed to solve it almost the same way you Simon did. And you teached me about all of these techniques. Thanks!
Took me longer than I'd like, but it was a satisfying solve. Thanks for the great puzzle!
everytime i think i'm getting on a streak of solving about 7-8 puzzles in a row, one of these comes along and totally stumps me!
Though I did look, I didn't see any specials, ie. X Y wing etc. Seeing the three sets of numbers and how they affect the puzzle was key to solving and if one didn't see them early, speed solving wouldn't work too well. That's if I knew what I was talking about. Great puzzle and another excellent video. A note that might be worth my two cents. When you are solving, you have passed filling cells in the 1st column especially the upper left box when they became givens. Just curious? --- Gene
Managed to solve it without hints in 44 minutes, without spotting any of the 4-5-6, 1-3-8 or 2-5-9 triples, but also without bifurcation. What did help me was a 3-7-8 triple in column 5.
Didn’t see the pencil mark 1, brilliant solving!
456 triple was enough to solve it, the other ones just made it faster.
I was just about to go to bed, but I guess I am watching this now :)
Great puzzle! Loved the interaction between the various hidden pairs/triples
I did the puzzle in about 12 minutes before watching the video. I shamefully confess that I had to resort to entering all candidate pencil marks when Snyder ceased being useful. After that I only had to spot some triples and the puzzle crumbled quickly. Your solve is much more elegant.
4 interlocking NYT hidden triples in one beautiful puzzle. Once I found one I looked for more and did all of them. Puzzle solves in under 6 minutes!!😁😁
I don't even play Sudoku but this guy is amazing
By writing down what squares could be I noticed many of the doubles and triples in the three central columns even without noticing the triangle digit tricks. 14:59 solve, beautiful puzzle.
23 minutes, and I normally can't even solve half the puzzles on this channel.
amazing, love this channel thanks
r1c1 was dangling for ages as the last square in c1. Would have sped up Simon's solve immensely...
I was wondering if there is a more rigorous definition of "world class". I love sudoku and even more this channel because of the extra level of challenge it has provided. Solving a puzzle can happen with the determined among us and some time. What is a world-class classification and how does that separate itself from other classifications? I'm asking mainly because I want to enter that realm, so some discrete direction would be awesome. :)
whew, only found this channel a few days ago, my methods are a step above caveman status but I was able to do this in just over an hour. Great channel looking forward to more, don't suppose it is sorted by level any way,shape,or form?
nice puzzle! thank you.
I also found a 378 triple in the middle column. It's pretty hard to spot, but I have a tendency to look for squares that are somewhat restricted, and notate them with central notation.
took me one hour and three minutes, great puzzle
I admit it took me 54:19, and I did list all the possibilities, but, seriously, I'm nowhere near one of the best sudoku solvers. Surely some of them should have been able to spot pairs on lines well enough to place, right? You often find two cells containing the same limitation on numbers in this puzzle, but these cells that are so limited are rarely in the same box. You absolutely don't need to bifurcate, but it's much faster with spotting the tricks involved.
You are great sir
There seems to be a pattern with rejected puzzles; they're all about the puzzle setter flexing.
Loved this puzzle.
Loved the puzzle. Need to practice more on triples. 33 minutes to solve it. The 456 triple... Too good.,
8:34 solve // Not too difficult, but with so many hidden pairs/triples I can see why it might be inappropriate for a tournament speed-solve setting. Thank you for another great puzzle and video.
What a puzzle!!
33:15, which I can livecwith. Now to see how Simon did it.
Sorry mate not to sound rude but how long do you look at these puzzles before you start recording ? (I know once you start solving the rest becomes clearer to solve )
i was on same track until @8:23 you can see 2 can only be in r4c5 therefore pair of 2,5 appears on r7c4 and r9c4.
why? 2 could have been in r4c4
@@GalliadII no bcos you have already established that r2c4, r4c4, r6c4 will only contain 3 numbers 1,3,8 as shown in the diagram.
@@goldenera7090 this is this kind of thinking keeping me from the really hard puzzeles.
I f'ed this up so bad. 😆
Might be because I was trying to do it through a different tactic than I usually do and it confused me.
26:47 … for me, that ain't bad.
Can someone please tell me a website for determining the difficulty of a sudoku(where I put in numbers),like an engine but not a solver cause some of the extreme puzzles are very similar and boring and I'd be glad to know how difficult it is before solving it.
duncans sudoku solver should do you fine
Not really a hard one for a change, when compared to the rest of puzzles on the channel. Took me 19min, without spotting the 456 triple. Still, a very nice puzzle. :)
I managed to solve it but I didn't spot the 46-pair near the end so I ended up bifurcating instead to find the solution. Great puzzle!
Thought you where going to spot the 187 in the left/middle square after you spotted the 295 / 183 / 465 tripples even if the 465 was enough to solve it :)
37:22 but i needed 2 clues from Simon
OMG! I was stuck on this for 2 and a half hours, then i watch the first 7 min of the video and it broke it for me. Finished it in 17 and a half min after that lol
Are savants allowed in the championship? I brought yesterdays puzzle to a meeting today, we have a savant. He looked at it for 5secs, then he could write down the numbers without even looking at it again.
That sounds rather amazing, as solving a Sudoku would take more than say, someone with just an eidetic memory. The more generic definition is any learned person in a field, but I assume you mean someone with Savant Syndrome.
@@Tahgtahv Yes, Savant Syndrome. In Germany we call them savants. He is amazing with numbers and letters.
48 minutes. It's mostly just a case of hunting down the key triples and other eliminations.
I don't know a lot about sudoku but these videos are entertaining. But there's a 1 in the top left square in the same place as the bottom right square can someone tell me why that is because I thought you couldn't do that
the digits only need to be unique in any one row, column and house (3x3 sub-block.) Relative position within the sub-block isn't restricted in standard Sudoku
Good puzzle, not that hard to plug through, but difficult to solve quickly.
right on time
Took me about 42 minutes to solve, but at least I did
Managed to muddle through without the NYT trick. Funny thing is that if it had been an NYT I’d have been watching for them. Gotta keep out of the box.
Could someone explain the 138 138 138 = 2, The number 3 to the left of the upmost 138 confuses me
It's best to give a time stamp when referring to a part of the video.
@@svenweiland3322 7:54
@@mawhpawh I assume you know how he got the 138 triple?
So there is three squares that can't be any number apart from 1,3 and 8. (The 3 three in the top left makes it so that specific square can only be 1 and 8 but that is irrelevant for 2). On the other in the top middle 3x3 he already found out that there are only two viable squares for the 2 but then one of them could no longer be a 2 because of the 138 triple, hence only one option remained for the 2. Hope this helps.
Ot to be more concise the top middle 3×3 needs a 2. Think about where you can put a 2. It can't be the spots in line with already existing twos and it can't be a spot where there needs to be a 1,3 or 8.
30:11 not bad but could did it a bit faster
We need a name for thise techinique that's slowlt becoming more and more popular. How bout something like a Boxed tripple?
Managed without 456 triple, but did it in 20minutes
About 20 minutes for me and no x-wings, bent triples or empty squares. Just straight forward elimination of posibilities.
9:52 did I miss something? why is that a 2?
That square was part of the "259" triple he was talking about. The 5 in that row was part of the "456" triple and ALSO part of the "259" triple, therefore has to be a 5. Then in that row the "59" pair becomes a 9. Then the only square left open is the 2; since there is a "38" square and the remaining 3 open squares in the column are in the same block as the "259" triple.
Hope this helps.
Cale Surins what
Some world class solvers really e-mailed you? 4,99 to solve some Sudoku...no thanks, I better steal a newspaper from an old man -_-
1h27 got the first 456 triplet but didnt check the others :-(
456 183 amazing rule... thanks
Is it bad to not even try doing it fast? I mean is 45 minutes a shameful time for full completition ?
It took me 1 hour and I had to bifurcate twice. That bent triple trick at the beginning probably would have saved me 30 minutes... A nice puzzle
29m 41sec
Weird i solved it rather easily in 21 min with a washroom break.
took me a hour
gaming
I don't claim to have solved this puzzle in 7 minutes but I found it quite easy and didn't need the nY Times tricks
:)
Took me 20 mins, so I guess that is about 5 mins for the best solvers, not that difficult..
I did it in one hour, kinda proud of it... not.