John, this video just popped up in my TH-cam; I had never seen it before.. Neat puzzle. I found the explanation for solving row 6 with the so-called weak numbers, as clever as it was, overcomplicated the matteer. Doing it notation free, it was clear that col 8 just needed a 78 pair to be completed, including cell r6c8; there was another 78 in col 3 at r6c3. Block 6 neede another 78 to be completed. Because of the remote pair of 78 in row 6, the additional 78 needed in block 6 had to be in r4c9, leaving a 4 in r6c9. This simple thing kills the puzzle. In the end, I never spotted a hidden triple :)
@@georgesthibaudeau1533 I admit, I don't remember this puzzle. My comment is dated one year ago, but that's with a large uncertainty. Most likely, I automatically caught the triple by notating up to three cornermarks per block instead of Snyder's two. Once in a while, I try a puzzle notation-free, but usually I can't keep track of things.
Watch the cursor move around and glide over the manifold free gifts, while the operator looks for complex solutions. I have noticed that most of the you tube sudoku puzzle solvers always go for the complex, without filling in the patently obvious.
Speed. Cut to the core problem of the puzzle first. Only add the "obious" if they help in that central quest. Otherwise you are distract by the inconsequential.
@@debralegorreta1375 - I am an engineer, so think logically and consider all routes of action before settling on the difficult stuff. Filling in the 'obVious', often clarifies the obscure and hastens the path to the solution. If going straight for the tough bits was quicker, I'd do it! :-)
nlo114, this is the 3rd sudoku video I've seen you complain on. I hadn't realised being such a genius could be so frustrating, you poor thing... although, I do wonder why someone so obviously superior would bother watching these tuition videos in the first place, especially when you find them so upsetting...
I struggled to follow as well and I don't think he explained very well, probably because it's so intuitive to him already. I'll have a go though as I had to pause the video to understand what's going on. On row 6 we've got 3,5,9 eliminated - which leaves 1,2,6 (strong numbers) and 4,7,8 (weak numbers). He identified 3 squares where 1,2,6 are blocked (r6: c3,c8,c9). That reveals the hidden triple of 4,7,8 which eliminated 4 from r6c1 and he moved on from there. Thing is, there's no way I'd have spotted that on my own, but I guess it comes with experience!
@@eugenetswong My understanding is that there are lots of them. There are 6x(1), 5x(2), 5x(6), compared to 4x(4), 1x(7) and 1x(8). The strong ones are all over half of possible 9 and weak ones under half.
@@guiltyvictim hi! thanks for your first explanation. I figured it out, based on your first explanation, but I think that his way of explaining it was too convoluted. I first put the 478 in box 6, and double checked that 126 were scattered in the other boxes. From there, I was able to use box 1 to solve for 126...at least that is the way that I recall. I did it my head, as I followed the video and paused. Thanks for the clarification, too. I should have finished watching the video first. It's just that he didn't start off explaining where the hidden triple is, and what it is, so I paused and came down to the comment section, before he explained things.
@@eugenetswong There's another video that specifically dive into the hidden triple which may be more useful. I think the explanation is much better: th-cam.com/video/LeK-LwPcQwQ/w-d-xo.html
I copied this sudoku to my notebook, spent hours trying to solve it until I realize I forgot to copy the number in the center box (5,3,9). Feelsbadman.
I can't remember as this was a few months ago now but it looks like I was simply scanning column 7, saw that I needed a 4 and a 9 and spotted that there was a 4 already in row H. So I placed the 9 first and then the 4, I wish I could claim it was something more complicated but I don't think it is!
Where the Hell was the Hidden Triple??? Good Lord!! With the cursor scribbling all over the screen like he was having a nervous breakdown, he must have forgotten the purpose of making the video.
I struggled to follow as well and I don't think he explained very well, probably because it's so intuitive to him already. Also it seems he's just recording himself doing a puzzle and happened upon the hidden triple, so I don't think he planned to give an explanation so that's probably why it didn't seem well explained. I'll have a go though after pausing the video made sense of it : On row 6 we've got 3,5,9 eliminated - which leaves 1,2,6 (strong numbers) and 4,7,8 (weak numbers). He identified 3 squares where 1,2,6 are blocked (r6: c3,c8,c9). That reveals the hidden triple of 4,7,8 which eliminated 4 from r6c1 and he moved on from there. Thing is, there's no way I'd have spotted that on my own, but I guess it comes with experience!
This bloke is a bit infuriating. At the 2:05 mark he looks at the 2/5 combo and immediately says " we can put a 2/5 over here." No explanation at all. The 5, yes I agree, but no explanation for the 2. That makes him a big fat jerk !
Nice discussion distinguishing between the "strong numbers," 2, 6, 1, and the "weak ones" 4,7, 8. That cracked the puzzle. Useful idea. Thank you.
"The trick here is to spot a hidden triple but how do we do this?" In my case, pencilmarking more generously than Snyder notation.
John, this video just popped up in my TH-cam; I had never seen it before.. Neat puzzle. I found the explanation for solving row 6 with the so-called weak numbers, as clever as it was, overcomplicated the matteer. Doing it notation free, it was clear that col 8 just needed a 78 pair to be completed, including cell r6c8; there was another 78 in col 3 at r6c3. Block 6 neede another 78 to be completed. Because of the remote pair of 78 in row 6, the additional 78 needed in block 6 had to be in r4c9, leaving a 4 in r6c9. This simple thing kills the puzzle. In the end, I never spotted a hidden triple :)
@@georgesthibaudeau1533 I admit, I don't remember this puzzle. My comment is dated one year ago, but that's with a large uncertainty. Most likely, I automatically caught the triple by notating up to three cornermarks per block instead of Snyder's two.
Once in a while, I try a puzzle notation-free, but usually I can't keep track of things.
Watch the cursor move around and glide over the manifold free gifts, while the operator looks for complex solutions. I have noticed that most of the you tube sudoku puzzle solvers always go for the complex, without filling in the patently obvious.
Speed. Cut to the core problem of the puzzle first. Only add the "obious" if they help in that central quest. Otherwise you are distract by the inconsequential.
@@debralegorreta1375 - I am an engineer, so think logically and consider all routes of action before settling on the difficult stuff. Filling in the 'obVious', often clarifies the obscure and hastens the path to the solution. If going straight for the tough bits was quicker, I'd do it! :-)
nlo114, this is the 3rd sudoku video I've seen you complain on. I hadn't realised being such a genius could be so frustrating, you poor thing... although, I do wonder why someone so obviously superior would bother watching these tuition videos in the first place, especially when you find them so upsetting...
@@nlo114 "I am an engineer..." yes, you come across as one.
The pitch of his voice in the greeting... and what a difference to nowadays' presentations. But I like the vintage nerdy Simon... how about you?
Maybe its because his voice is so quiet, but I didn't see anything about identifying the hidden triple
I struggled to follow as well and I don't think he explained very well, probably because it's so intuitive to him already. I'll have a go though as I had to pause the video to understand what's going on.
On row 6 we've got 3,5,9 eliminated - which leaves 1,2,6 (strong numbers) and 4,7,8 (weak numbers). He identified 3 squares where 1,2,6 are blocked (r6: c3,c8,c9).
That reveals the hidden triple of 4,7,8 which eliminated 4 from r6c1 and he moved on from there.
Thing is, there's no way I'd have spotted that on my own, but I guess it comes with experience!
@@eugenetswong My understanding is that there are lots of them. There are 6x(1), 5x(2), 5x(6), compared to 4x(4), 1x(7) and 1x(8). The strong ones are all over half of possible 9 and weak ones under half.
@@guiltyvictim hi! thanks for your first explanation. I figured it out, based on your first explanation, but I think that his way of explaining it was too convoluted.
I first put the 478 in box 6, and double checked that 126 were scattered in the other boxes. From there, I was able to use box 1 to solve for 126...at least that is the way that I recall. I did it my head, as I followed the video and paused.
Thanks for the clarification, too. I should have finished watching the video first. It's just that he didn't start off explaining where the hidden triple is, and what it is, so I paused and came down to the comment section, before he explained things.
@@eugenetswong There's another video that specifically dive into the hidden triple which may be more useful. I think the explanation is much better: th-cam.com/video/LeK-LwPcQwQ/w-d-xo.html
Wow that was fantastic
I copied this sudoku to my notebook, spent hours trying to solve it until I realize I forgot to copy the number in the center box (5,3,9). Feelsbadman.
Again very helpful in finding the triple without a bunch of pencil marks
how can we get this puzzle??
Really useful man ❤️
How did he se the 9 in H7 before the 4 in A, thought it should have been the opposite?
I can't remember as this was a few months ago now but it looks like I was simply scanning column 7, saw that I needed a 4 and a 9 and spotted that there was a 4 already in row H. So I placed the 9 first and then the 4, I wish I could claim it was something more complicated but I don't think it is!
@@CrackingTheCryptic thanks
what is the app he using?
I don't understand why you selected c1r5 and c1r6 and not c3r6 also for a 4.
The 2-6 pair in the first block forces a 4 into c3 in the first block (either r2 or r3). So there can't be a 4 at c3r6.
@@philipabelanet5476
Ah! Now I see. I don't know how I missed that.
@@skyzzx3655 Cheers.
Where the Hell was the Hidden Triple??? Good Lord!! With the cursor scribbling all over the screen like he was having a nervous breakdown, he must have forgotten the purpose of making the video.
I struggled to follow as well and I don't think he explained very well, probably because it's so intuitive to him already. Also it seems he's just recording himself doing a puzzle and happened upon the hidden triple, so I don't think he planned to give an explanation so that's probably why it didn't seem well explained.
I'll have a go though after pausing the video made sense of it
:
On row 6 we've got 3,5,9 eliminated - which leaves 1,2,6 (strong numbers) and 4,7,8 (weak numbers). He identified 3 squares where 1,2,6 are blocked (r6: c3,c8,c9).
That reveals the hidden triple of 4,7,8 which eliminated 4 from r6c1 and he moved on from there.
Thing is, there's no way I'd have spotted that on my own, but I guess it comes with experience!
Not explanatory enough for my feeble little brain
You are borrowing to explain
Babbling is a poor way of explaining things.
This bloke is a bit infuriating. At the 2:05 mark he looks at the 2/5 combo and immediately says " we can put a 2/5 over here." No explanation at all. The 5, yes I agree, but no explanation for the 2. That makes him a big fat jerk !
The 5 and 2 couldn't go in the top row, the 5 had to go in the middle so the 2 had to go in the bottom