I think it would be really cool if you did some sudokus with eye tracking. It would be interesting to be able to see your search patterns work and could make the videos a bit easier to follow along.
I watched one of these videos (for the first time) just a few nights ago and I can already see huge improvements in how fast I can solve Sudoku puzzles.
I watch your channel for both education and entertainment. The really hard ones have been the most fun to watch for me. Please make videos of the horrendous ones every now and then!
At 9:30 you said you had a 1,3,5 triple, and erased the Snyder 5 from column 8. Is this a lucky accident, or am I missing something? It seems like it could have gone off the rails with the mixed notation in this block. Later at 15:40 you continued with the 1 as if it was from Snyder, when it was originally part of the different train of thought. EDIT: Upon further (morning) reflection, I can now see what is going on. When you say to look at the 3-5 pair at the bottom, it will restrict the 1 to column 7 in that box (Snyder), but I would have erased all the 3s. I hadn't noticed that you added the 5 mark back in. I am a bit paranoid about mixing notation.
I think what would help is explaining exactly where the puzzle fell apart. You build up momentum so fast and it's usually right at the turning point of a pivotal discovery.
How very interesting. At the beginning of the video, I paused and got stuck EXACTLY where Linda did. As soon as you found the 2-6-8 trick that I missed, the entire puzzle fell apart just like it did for you. I'll certainly be on the lookout for more relationships like this one in the future!
@@RBCharger Is there an android version of this app please since the link provided is a Windows based application and it requires .Net framework as well?
Snyder 1 to 9. Repeat every time you get a single. Fill in all squares with what can be there remembering your snyders. Spot any naked singles. Scan for pairs, triplets, quadubles, x-wings etc. and most of the time sail away. Sometimes after all that you need some logic chains through the pairs but that is minority. For me, as I'm not even trying ti be a speed solver, this is the path that has always worked.
If you use this program, you can switch from big to little and back with your right mouse button instead of clicking up top every time. I use it every day. I copy sudokus from my newspaper into it so I don't have to use pencil and eraser for notations.
I don’t grasp the process from @9:40 on, what makes you think the 1 or 5 can’t be in the column of 7? Or between the 4 and 2 in the middle box? Edit: oh it was a dead end.
Hi. At 11:25 u placed a 2 at the top of column 5. I do not understand why a 2 could not be anywhere else on column 5. Seemed a random accusation as 2 could have been placed in a few squares. Can you please explain? Thank you. Enjoy ur vids
Hello, can you please explain something that I can't get my head around? At 15:50 you say the 1 goes into r1c7 because of the 3/5 pair. Ok, but 1 can also go into r1c8 and r5c7. Trying to keep my mind flexible :)
I like this style of notation but since it's changed to corners or centers I much prefer putting them in the center. In corners they numbers don't appear in the same place from square to square and I find having them in order in the center much easier to track.
Would you like to tell me why 15:50 1 is there but not at the top of 7? back to 9:20, you said 135 triple,then delete 1&3 from the center column of the right upper corner,why?(it might be a 3 left to 8 at the right bottom corner!)
Cell (1,7) can only be a 1 or 3. Since column 7 now has a 3-5 pair, it can't be a 3 any more. It isn't a matter of where a 1 can be placed, the first cell commands the 1.
nice triple spot @12:30 and then it is busted open really. number 3 can only go in r6c4, r6c6 hence 3 must be in r5c2 and then column 2 gets filled in easily.
It's not a matter of "the 8 can't go anywhere else in c5", but more "there's no other number that can go into c5r3". The box eliminates 1, 5, 7 and 9, the row eliminates 2, and the column eliminates 3, 4 and 6. All that's left is an 8.
in box 2 you have a 579 that cannot go along column 5. there only are 3 vacancies in the lower boxes in column 5 so the 579 will be there. That leaves a 2 and an 8 for column 5 in box 2 and we were given a 2 from box 3 so that sets the 2 in r1c5 and the 8 in r3c5. I spotted that 1 before the others. this puzzle was a bit more vicious as spotting just 1 of the hidden triples is not enough to break the puzzle...takes 3 of them. many even hard NY times puzzles you spot the 1 triple and the entire puzzle then breaks down.
Relatively easy - no fancy techniques needed. I saw the 134 triple middke left and the 268 in the centre and the 346 top middle very early, and this gav ea fast solve
Okay, figured it out. There's a non-pencil-marked five pair in the fifth column. With the pencil-marked fives in column eight, that eliminates the cells in rows 4 & 5. Although at about 17:30 he seems to realize for the first time that the fives are there. What else am I missing? Or did his sudoku-brain know about the pair of unmarked fives without him realizing it?
can you please do a video on todays (24 march) nytimes sudoku. i started doing those since a couple of days and today's puzzle seems to really hard for me.
I tried doing the NYT 24 March hard puzzle as the first sudoku puzzle I have ever seriously attempted. It drove me nuts as I kept making mistakes and having to restart. But I got it on the third attempt after several hours of trying. Ouch!
@@ib9rt I suggest to try medium and easy levels as well. With the easy level. Try to do it without notation and as fast as possible. It improves your visual citation across the whole puzzle. With the medium it gives you very good exercise on notation and finding doubles and triples. Need to do more exercises.
However you might be taught many tricks,but the best way of learning is self.learning .You can get guidelines only but unless and until you do yourself you can't progress.
I think it would be really cool if you did some sudokus with eye tracking. It would be interesting to be able to see your search patterns work and could make the videos a bit easier to follow along.
This might be one of the few videos that I run at .5 playback. My eyes have difficulty following the mouse😀
I subscribed less than a week ago, and I can say that yes, I'd like to see you solving those very difficult puzzle you mentioned at the begginning
Agreed
Absolutely!
same
same. tho he already uploaded this 30min solve
I watched one of these videos (for the first time) just a few nights ago and I can already see huge improvements in how fast I can solve Sudoku puzzles.
These are my favorite episodes, the ones where I actually learn something. Keep 'em coming!
I watch your channel for both education and entertainment. The really hard ones have been the most fun to watch for me. Please make videos of the horrendous ones every now and then!
He did a truly horrendous one. Look for "Expert puzzler gets owned",
At 9:30 you said you had a 1,3,5 triple, and erased the Snyder 5 from column 8. Is this a lucky accident, or am I missing something?
It seems like it could have gone off the rails with the mixed notation in this block. Later at 15:40 you continued with the 1 as if it was from Snyder, when it was originally part of the different train of thought.
EDIT:
Upon further (morning) reflection, I can now see what is going on. When you say to look at the 3-5 pair at the bottom, it will restrict the 1 to column 7 in that box (Snyder), but I would have erased all the 3s. I hadn't noticed that you added the 5 mark back in.
I am a bit paranoid about mixing notation.
I think what would help is explaining exactly where the puzzle fell apart. You build up momentum so fast and it's usually right at the turning point of a pivotal discovery.
It fell apart when he was able to pencil mark 3s into R6 eliminating the 3 from R6 C2 forcing the 3 into R5 C2.
@@glennmelven3414 My thought exactly
How very interesting. At the beginning of the video, I paused and got stuck EXACTLY where Linda did. As soon as you found the 2-6-8 trick that I missed, the entire puzzle fell apart just like it did for you. I'll certainly be on the lookout for more relationships like this one in the future!
Well, I solved this but in a much more labour-intensive way. I didn't see the 2-6-8 trick at 12:25. Thanks, Simon!
I know you mentioned the software you use in the video, can you include a link in the description in the future?
@@RBCharger Is there an android version of this app please since the link provided is a Windows based application and it requires .Net framework as well?
@@KJPBOHRA I don't think so. Sorry.
Snyder 1 to 9. Repeat every time you get a single. Fill in all squares with what can be there remembering your snyders. Spot any naked singles. Scan for pairs, triplets, quadubles, x-wings etc. and most of the time sail away. Sometimes after all that you need some logic chains through the pairs but that is minority. For me, as I'm not even trying ti be a speed solver, this is the path that has always worked.
If you use this program, you can switch from big to little and back with your right mouse button instead of clicking up top every time. I use it every day. I copy sudokus from my newspaper into it so I don't have to use pencil and eraser for notations.
New subcriber and I vote a big yes for the longer more complicated puzzle.
Even with the walkthrough I still cocked it up 😩
@ 9:21 when talking about 1-3-5 triple, why were you able to delete the 1-3 in C8R1 and C8R3?
I don’t grasp the process from @9:40 on, what makes you think the 1 or 5 can’t be in the column of 7? Or between the 4 and 2 in the middle box?
Edit: oh it was a dead end.
Hi. At 11:25 u placed a 2 at the top of column 5. I do not understand why a 2 could not be anywhere else on column 5. Seemed a random accusation as 2 could have been placed in a few squares. Can you please explain? Thank you. Enjoy ur vids
Hello, can you please explain something that I can't get my head around? At 15:50 you say the 1 goes into r1c7 because of the 3/5 pair. Ok, but 1 can also go into r1c8 and r5c7. Trying to keep my mind flexible :)
I like this style of notation but since it's changed to corners or centers I much prefer putting them in the center. In corners they numbers don't appear in the same place from square to square and I find having them in order in the center much easier to track.
I wish you'd add your software link to this older puzzle so we could solve along like we do with the newer videos.
Would you like to tell me why 15:50 1 is there but not at the top of 7?
back to 9:20, you said 135 triple,then delete 1&3 from the center column of the right upper corner,why?(it might be a 3 left to 8 at the right bottom corner!)
Well, thanks to the admin at the start I now know which one of you is Mark and which is Simon 🙈
12:30 you talked about a 2-6-8 triple. But it's not. You can't put a 6 in that cell. So is this technique still valid or was this a happy accident?
9:15.. this doesn't seem like Synder notation since we have 1s and 3s in more than 2 cells in block 3. Am I missing something?
Is this software just for making custom Sudoku puzzles or does it have some built in? Been seeing these recently and kinda want to do them
@Madolite I second this recommendation. I use Hodoku myself, it's pretty good.
Surprised I saw you post this right as I clicked refreshed xD
At 15:52, how do you know that cell (1,8) cannot be a 1? I can see no restriction on that cell that prevents a 1 being placed there?
Cell (1,7) can only be a 1 or 3.
Since column 7 now has a 3-5 pair, it can't be a 3 any more. It isn't a matter of where a 1 can be placed, the first cell commands the 1.
nice triple spot @12:30 and then it is busted open really. number 3 can only go in r6c4, r6c6 hence 3 must be in r5c2 and then column 2 gets filled in easily.
It’s 2, 6, 8... which opened the G8
Can someone explain me about the eight at 10:50? I really don't see it. Why cant eight be c5r1, c5r4, c5r5 or c5r8?
It's not a matter of "the 8 can't go anywhere else in c5", but more "there's no other number that can go into c5r3".
The box eliminates 1, 5, 7 and 9, the row eliminates 2, and the column eliminates 3, 4 and 6. All that's left is an 8.
@@L0lf0ry0u i totally didn't see that. My mistanke!
in box 2 you have a 579 that cannot go along column 5. there only are 3 vacancies in the lower boxes in column 5 so the 579 will be there. That leaves a 2 and an 8 for column 5 in box 2 and we were given a 2 from box 3 so that sets the 2 in r1c5 and the 8 in r3c5. I spotted that 1 before the others. this puzzle was a bit more vicious as spotting just 1 of the hidden triples is not enough to break the puzzle...takes 3 of them. many even hard NY times puzzles you spot the 1 triple and the entire puzzle then breaks down.
9 in box 5 is peaceable!
Relatively easy - no fancy techniques needed. I saw the 134 triple middke left and the 268 in the centre and the 346 top middle very early, and this gav ea fast solve
I don't understand the 5 at 17:00. How was that determined?
Okay, figured it out. There's a non-pencil-marked five pair in the fifth column. With the pencil-marked fives in column eight, that eliminates the cells in rows 4 & 5. Although at about 17:30 he seems to realize for the first time that the fives are there. What else am I missing? Or did his sudoku-brain know about the pair of unmarked fives without him realizing it?
There is a 5 in the bottom right cell of the puzzle (r9c9). That forces the 5 in row 6 into r6c3.
Dear Simon,
Would you please kindly repeat the name of the Sudoku software?
Ty v much
I'd learn this stuff a lot better if they'd link the puzzle, so I could try it myself.
can you please do a video on todays (24 march) nytimes sudoku. i started doing those since a couple of days and today's puzzle seems to really hard for me.
Same it took me 50 minutes to solve it
@@bluestar2802 i tried for more than an hour and gave up :(
There were a number of hidden triples that solved it for me.
I tried doing the NYT 24 March hard puzzle as the first sudoku puzzle I have ever seriously attempted. It drove me nuts as I kept making mistakes and having to restart. But I got it on the third attempt after several hours of trying. Ouch!
@@ib9rt I suggest to try medium and easy levels as well. With the easy level. Try to do it without notation and as fast as possible. It improves your visual citation across the whole puzzle. With the medium it gives you very good exercise on notation and finding doubles and triples. Need to do more exercises.
Sam Harris: "OK -- a little housekeeping."
I still cant make it
you would be incredible at minesweeper
6 can't go at the top of box 5
How did he know a 5 goes in at 16:40?
35 pair down column 7
However you might be taught many tricks,but the best way of learning is self.learning .You can get guidelines only but unless and until you do yourself you can't progress.