How did you solve the green cell? Join the Smartie Party now 👉👉www.buymeacoffee.com/timberlakeB/membership Timestamps 0:00 Intro 00:19 It’s Solving Time 01:09 Puzzle Story 02:00 Snyder Notation 03:16 BONUS Tip #1 04:08 Mini X-Wing 05:26 BONUS Tip #2 08:00 Secret To Finding Advanced Strategies 10:20 Advanced Strategy Variations 11:34 Solving The Green Cell 11:45 Following The Snyder
A lovely puzzle, as we've come to expect from Akash. I didn't find any strategy that I would call remarkable, but I suppose any hard-rated strategy might be remarkable to anybody who had never seen it before (36 = row 3 column 6): 36, 19, 99, 13, 49, 78, 88, 61, 45, 38, 27, 91, 25, 34, 86, 22, 24, 65, 53, 64, 48, 67, 57, 75, 54, 43, 56, 46, 85 (Skyscraper, or colours from R7C6), 76, 72, 26, 35, 33, 32, 63, 58, 47, 68, 42, 62, 52, 23, 39, 29, 12, 11, 83, 71, 81, 74, 84, 77, 87, 97, 98. Naturally, a variation is called for. Here's one with a missing digit: 000 123 450 000 000 060 200 040 700 300 200 000 407 060 205 000 005 006 002 010 007 030 000 000 045 678 000 000123450000000060200040700300200000407060205000005006002010007030000000045678000 HoDoKu rating: Hard 956. Andrew Stuart rating; Tough Grade 109.
I began by filling in the perimeter, then went to the rest of the grid. I just filled things in. Near the end, I saw a skyscraper in 3s. I had no idea that centermarking the grid and a skyscraper were all that was needed to collapse the puzzle. The green cell was part of the skyscraper, and had 34, one of two 34 pairs. BTW, I didn't find or need a two-string kite. I used what you called the upside-down skyscraper.
At 9:18, we have the presence of FRACTURED WING in 3 on c2 where 3 splits @(32)&(72) AND on c6 where 3 splits @(26)&(76), with row 7 as pivot !!!! That right away means we can’t have 1@(35), looking at both 1 in the arms of the Wing at (32)&(26), OTHERWISE 1@(35) would simultaneously lead to 1 on c2@(72) and on c6@(76) , resulting in two 1s on the same row 7, in VIOLATION to the house rule!!!( now do u see the significance of having a shared row as a pivot for the argument to work ? U can have situations where the pivot is in the form of shared column or Box!! I’ll be more than happy to demonstrate those situations upon request!!) So 3 in Box 2 has to be @(26)! and on c5@(85) ==> 3 on c3@(33) plus in B7@(72)!, thereby completing all 3s in the grid! It frightens and frustrates me to watch u spend minutes to finally figure out that 3 has to be @(26), when it should take only seconds, almost pronto !!
I love that you notice cells I could solve much earlier in the video. I call them screamer cells because I used to scream the answer at the screen when I watched a video as if the solver could hear me.
Nice puzzle and solve. I solved it in 9:43. I used the same skyscraper, but eliminated 3 from r2c3 instead, placing 9 there, which solves the puzzle as well. You can also view this as a finned X-wing on the 3-s in rows 3 and 8 or in columns 3 and 5, which remove 3 from r2c3 and r3c2 respectively.
I solved this in 34:56 with no help from the video. I had almost all candidates filled in, so I had a bunch of BVCs. What broke it for me was I found the 2 string kite towards the end which solved the puzzle, but I never found nor needed a skyscraper. I don't know how long I had the candidates for the 2 string kite filled in before I found it, but it was probably a while.
@@SmartHobbies I just did something I found interesting. I ran through the puzzle again, this time knowing what to watch for as I went along concerning the 2-string kite. I finished the puzzle in 16:19, less than half the time that it initially took me. I'm spending too much time trying to continue to fill in cells that aren't particularly useful, when the info needed for the advanced technique is already there.
Amazing video! I recently got into sudoku puzzles doing the hard nyt sudoku puzzle every day. Your videos with advanced solving tutotials are really fun!
Filled in the grid with possibilities then first tried colouring the 1s and 9s to see if that led to any contradictions, which it didn’t. Next I coloured the possibilities for 3 around the grid and found only one set solved the puzzle whereas the other removed 3 from box 1. Effectively this was probably a skyscraper but was easier for me to visualise.
@@SmartHobbies I've been doing them on flights for years but I never tried to learn any techniques until recently after being laid-up with a sprained ankle.
Basically a fail for me. I did not spot the strategy for the 34s. Bifurcation with the 9s in block 1 was the only thing for me to come through: 9 in row 3 causes conflict and hence 9 in r2c3.. Very crude, isn't it ?
@@SmartHobbies I must say the rest of the puzzle became very easy to finish. But it took me a while before I became sure of the positioning of theat 9 in block 1 ! So, not a masterpeiece ! :) But fun :)
Great question. I input the puzzle into f-puzzles.com which is freely available to input classic puzzles and several types of variants. I then transfer the puzzle over to CTC app also known as Sudoku Pad. F-puzzles is better for setting and I think CTC is better for solving. Hope that helps
How did you solve the green cell? Join the Smartie Party now 👉👉www.buymeacoffee.com/timberlakeB/membership
Timestamps
0:00 Intro
00:19 It’s Solving Time
01:09 Puzzle Story
02:00 Snyder Notation
03:16 BONUS Tip #1
04:08 Mini X-Wing
05:26 BONUS Tip #2
08:00 Secret To Finding Advanced Strategies
10:20 Advanced Strategy Variations
11:34 Solving The Green Cell
11:45 Following The Snyder
A lovely puzzle, as we've come to expect from Akash. I didn't find any strategy that I would call remarkable, but I suppose any hard-rated strategy might be remarkable to anybody who had never seen it before (36 = row 3 column 6):
36, 19, 99, 13, 49,
78, 88, 61, 45, 38,
27, 91, 25, 34, 86,
22, 24, 65, 53, 64,
48, 67, 57, 75, 54,
43, 56, 46, 85 (Skyscraper, or colours from R7C6),
76, 72, 26, 35, 33,
32, 63, 58, 47, 68,
42, 62, 52, 23, 39,
29, 12, 11, 83, 71,
81, 74, 84, 77, 87,
97, 98.
Naturally, a variation is called for. Here's one with a missing digit:
000 123 450
000 000 060
200 040 700
300 200 000
407 060 205
000 005 006
002 010 007
030 000 000
045 678 000
000123450000000060200040700300200000407060205000005006002010007030000000045678000
HoDoKu rating: Hard 956.
Andrew Stuart rating; Tough Grade 109.
Of course you give us a variant. Nice, Julian. Thank you for sharing.
I began by filling in the perimeter, then went to the rest of the grid. I just filled things in. Near the end, I saw a skyscraper in 3s. I had no idea that centermarking the grid and a skyscraper were all that was needed to collapse the puzzle. The green cell was part of the skyscraper, and had 34, one of two 34 pairs. BTW, I didn't find or need a two-string kite.
I used what you called the upside-down skyscraper.
Nice job, John. Thanks for sharing that you used the upside down skyscraper
At 9:18, we have the presence of FRACTURED WING in 3 on c2 where 3 splits @(32)&(72) AND on c6 where 3 splits @(26)&(76), with row 7 as pivot !!!!
That right away means we can’t have 1@(35), looking at both 1 in the arms of the Wing at (32)&(26), OTHERWISE 1@(35) would simultaneously lead to 1 on c2@(72) and on c6@(76) , resulting in two 1s on the same row 7, in VIOLATION to the house rule!!!( now do u see the significance of having a shared row as a pivot for the argument to work ? U can have situations where the pivot is in the form of shared column or Box!! I’ll be more than happy to demonstrate those situations upon request!!)
So 3 in Box 2 has to be @(26)! and on c5@(85) ==> 3 on c3@(33) plus in B7@(72)!, thereby completing all 3s in the grid!
It frightens and frustrates me to watch u spend minutes to finally figure out that 3 has to be @(26), when it should take only seconds, almost pronto !!
I love that you notice cells I could solve much earlier in the video. I call them screamer cells because I used to scream the answer at the screen when I watched a video as if the solver could hear me.
Nice puzzle and solve. I solved it in 9:43.
I used the same skyscraper, but eliminated 3 from r2c3 instead, placing 9 there, which solves the puzzle as well. You can also view this as a finned X-wing on the 3-s in rows 3 and 8 or in columns 3 and 5, which remove 3 from r2c3 and r3c2 respectively.
Cool! Thanks for pointing out the Finned X-Wing as well
Thanks for the feature. Had made this some days back. Very nicely explained the skyscraper technique
Awesome Akash. Lovely puzzle with highly satisfying solve path. I can see why Yoshi recommended it to me from all the choices on LMI.
13:06 to solve. Didn’t spot the advanced technique I don’t think?! Time to watch Timberlake!
Great job Jon. Glad you were able to solve. Nice time as well.
I solved this in 34:56 with no help from the video. I had almost all candidates filled in, so I had a bunch of BVCs. What broke it for me was I found the 2 string kite towards the end which solved the puzzle, but I never found nor needed a skyscraper. I don't know how long I had the candidates for the 2 string kite filled in before I found it, but it was probably a while.
Great job Brad. I am happy to hear you found a 2-String Kite.
@@SmartHobbies I just did something I found interesting. I ran through the puzzle again, this time knowing what to watch for as I went along concerning the 2-string kite. I finished the puzzle in 16:19, less than half the time that it initially took me. I'm spending too much time trying to continue to fill in cells that aren't particularly useful, when the info needed for the advanced technique is already there.
@@BradJames878 That is a great observation Brad. Thank you for sharing!
Amazing video! I recently got into sudoku puzzles doing the hard nyt sudoku puzzle every day. Your videos with advanced solving tutotials are really fun!
Awesome! Welcome to Smart Hobbies and thank you for sharing. Are there any particular strategies you want to see featured?
The two string kite of 3s its a good approach for me to break in. it took me 10 minutes to solve it.
Great job Chaotix. A few others went the 2-string kite route as well. Thank you for sharing.
Filled in the grid with possibilities then first tried colouring the 1s and 9s to see if that led to any contradictions, which it didn’t. Next I coloured the possibilities for 3 around the grid and found only one set solved the puzzle whereas the other removed 3 from box 1. Effectively this was probably a skyscraper but was easier for me to visualise.
Pretty nice job. Yep. If you color all the cells of one candidate, that is how you can spot them. Thank you for sharing.
Nice tutorial!
Glad you liked it Donny. Welcome to the channel! How long have you been solving Sudoku?
@@SmartHobbies I've been doing them on flights for years but I never tried to learn any techniques until recently after being laid-up with a sprained ankle.
@@donnyh3497 That is rough to have a sprained ankle. I can promise you plenty of great puzzles to solve while you recover.
@@SmartHobbies Thanks!
In row 4,5,6 and column 7,8,9 Snyder 8s could have been added when you said there were no more. Didn't help the solve but......
Thanks for pointing that out. How much Snyder notation do you use when solving?
Basically a fail for me. I did not spot the strategy for the 34s. Bifurcation with the 9s in block 1 was the only thing for me to come through: 9 in row 3 causes conflict and hence 9 in r2c3.. Very crude, isn't it ?
It worked though, right Georges?
@@SmartHobbies I must say the rest of the puzzle became very easy to finish. But it took me a while before I became sure of the positioning of theat 9 in block 1 ! So, not a masterpeiece ! :) But fun :)
23m using notations , spotted skyscraper .
Awesome job spotting the skyscraper! Thanks for sharing.
May I know what is the programmed or apps used to input our own sudoku template?
Great question. I input the puzzle into f-puzzles.com which is freely available to input classic puzzles and several types of variants. I then transfer the puzzle over to CTC app also known as Sudoku Pad. F-puzzles is better for setting and I think CTC is better for solving. Hope that helps
I had the same diagram 10m28s then i tested cell R7C2 (36) . 3 and 6 forced a 9 on cell R2C3 and the puzzle collapsed.
Nice job! Thank you for sharing your method. Do you normally solve harder puzzles using the cell testing like you described?
@@SmartHobbiesNormally i look first for XY wings, skyscrapers but now it's like Mark G :) solutions
@@pawovado Nice!