📕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
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 😀
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.
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 !
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 🙏
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.
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.
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.
📕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
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.
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.
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. 👍🏻
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.
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.
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!
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. 😎
6:49 I had the same epiphany rn.
Wow! 😎
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.