📕Get my FREE Solving Guide that will help you solve over 80% of all Sudoku puzzles🧩to include NYT Hard👉👉www.buymeacoffee.com/timberlakeB/e/125822 Timestamps 0:00 Intro 00:13 It’s Solving Time 00:25 Puzzle Story 00:40 Finding Snyder Restrictions 02:58 BONUS Tip 05:45 Tricky Naked and Hidden Single 09:54 Spotting Single Candidate Strategies 12:14 Setting Up Powerful Strategy 14:15 Powerful Strategy Revealed
Great puzzle again from Julian. Played it without notation.. It goes a long way without much difficulty. When the hard part came, looking at the possibilities in the lower part of the grid, I had a strong impression with the 12 pair in row 9 that putting the 1 in column 8 was suspect, but I was unable to prove it. Then, without noticing an X-Wing as such, I saw the only alternative for the 1 if not in r9c5 was inr7c5, a 16 bi-value cell. Quite simply, if r7c5 is a 1, then the 6 in in row 1, the next 1 is inr8c7, with the 8 being in r7c7. The consequence is that we now have both a 7 and an 8 in the same cell r8c4. Once you resolve cell r7c5 to be a 6 and cell r9c5 to be a one, you can promptly finish playing basic sudoku. Had trouble getting there, though !
14:34. I solve almost everything. I found the xy wing about the 1 and I was quite happy. But got stuck once again. I tried a bit but I didn't find the right cell to look, so your solve helped me once more. Thanks 😀
Very good puzzle. Tricky pairs. 8s and 1s X wing. Right three boxes filled with 14s, took some time and got chain 1489, puzzle solved. Thanks for the puzzle and explanation.
Didn’t spot the x wings on 1s or the chain that eliminated the 9 in box 2. Great puzzle and superb techniques Timberlake! Hope all is well as we enter into Autumn/Fall and I sincerely hope none of your family have been caught up in the hurricanes in Florida. Praying for this area of the world 🙏
Solved in 16 minutes, and now I can't reconstruct how! I did pretty much the same as you up to the X-wing, but then spotted something different (and easier) than what you did - and now that I'm running through it again, I don''t see it.
I have a tip for those who use pencil. I write conjugate pairs for the rows on the left side of the puzzle and for columns on the left. This makes spotting chains much easier. Next I put a thick pencil mark trace in each 3x3 box on the lines to trace out empty rectangles. By my convention I trace a line to the left and above.
11:50 I found the X-wing at the beginning, when cornermarking 1s. I thought it was probably superfluous, but I applied it anyway. At least it limited blocks 2 and 3 -- also block 9. I didn't think to mark R9C9 -- it would have been 25, but fortunately, as soon as I violated the X-wing in that cell, I placed a 5. 14:20 I didn't find that XY-chain. In general, either I stumble upon such a thing or not. The grid was all centermarked, and I found an XYZ-wing in 789s in blocks 1 and 2. Actually, I found it as an alternate inference chain, that I only recognized as an XYZ-wing afterwards. It removed 9 from R2C6, leaving 15. It didn't seem to do me any good. I wound up bifurcating.
📕Get my FREE Solving Guide that will help you solve over 80% of all Sudoku puzzles🧩to include NYT Hard👉👉www.buymeacoffee.com/timberlakeB/e/125822
Timestamps
0:00 Intro
00:13 It’s Solving Time
00:25 Puzzle Story
00:40 Finding Snyder Restrictions
02:58 BONUS Tip
05:45 Tricky Naked and Hidden Single
09:54 Spotting Single Candidate Strategies
12:14 Setting Up Powerful Strategy
14:15 Powerful Strategy Revealed
Great puzzle again from Julian. Played it without notation.. It goes a long way without much difficulty. When the hard part came, looking at the possibilities in the lower part of the grid, I had a strong impression with the 12 pair in row 9 that putting the 1 in column 8 was suspect, but I was unable to prove it. Then, without noticing an X-Wing as such, I saw the only alternative for the 1 if not in r9c5 was inr7c5, a 16 bi-value cell. Quite simply, if r7c5 is a 1, then the 6 in in row 1, the next 1 is inr8c7, with the 8 being in r7c7. The consequence is that we now have both a 7 and an 8 in the same cell r8c4. Once you resolve cell r7c5 to be a 6 and cell r9c5 to be a one, you can promptly finish playing basic sudoku. Had trouble getting there, though !
Wow George’s. That was quite find. Thank you for sharing. 👍🏻
14:34. I solve almost everything. I found the xy wing about the 1 and I was quite happy. But got stuck once again. I tried a bit but I didn't find the right cell to look, so your solve helped me once more. Thanks 😀
Glad to hear that I was able to help you Ana. That is still a great time. Nice job finding XY-Wing.
Very good puzzle. Tricky pairs. 8s and 1s X wing. Right three boxes filled with 14s, took some time and got chain 1489, puzzle solved.
Thanks for the puzzle and explanation.
You are welcome. Nice work!
Didn’t spot the x wings on 1s or the chain that eliminated the 9 in box 2. Great puzzle and superb techniques Timberlake! Hope all is well as we enter into Autumn/Fall and I sincerely hope none of your family have been caught up in the hurricanes in Florida. Praying for this area of the world 🙏
Glad you liked the puzzles, Jon. My son is in Florida but he made it through okay. Thank you for your consideration.
Solved in 16 minutes, and now I can't reconstruct how! I did pretty much the same as you up to the X-wing, but then spotted something different (and easier) than what you did - and now that I'm running through it again, I don''t see it.
Whatever you did, worked. I hope you figure out how to replicate. 😎
I have a tip for those who use pencil. I write conjugate pairs for the rows on the left side of the puzzle and for columns on the left. This makes spotting chains much easier.
Next I put a thick pencil mark trace in each 3x3 box on the lines to trace out empty rectangles. By my convention I trace a line to the left and above.
Great idea and way to keep up with conjugate pairs. I have to try that out. Thank you for sharing.
11:50 I found the X-wing at the beginning, when cornermarking 1s. I thought it was probably superfluous, but I applied it anyway. At least it limited blocks 2 and 3 -- also block 9. I didn't think to mark R9C9 -- it would have been 25, but fortunately, as soon as I violated the X-wing in that cell, I placed a 5.
14:20 I didn't find that XY-chain. In general, either I stumble upon such a thing or not. The grid was all centermarked, and I found an XYZ-wing in 789s in blocks 1 and 2. Actually, I found it as an alternate inference chain, that I only recognized as an XYZ-wing afterwards. It removed 9 from R2C6, leaving 15. It didn't seem to do me any good.
I wound up bifurcating.
Nice job finding that X-Wing at the beginning, John. Interesting that you also found XYZ-Wing. Thank you for sharing.
Very easy sudoku
I am happy to hear that you found this very easy. What strategy or approach did you use to get through it?
I wish.
6:49 I had the same epiphany rn.
Wow! 😎