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immpy
Joined: 06 May 2017
Posts: 574
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 Posted: Tue Oct 05, 2021 7:20 pm Post subject: VH+ 100521 |
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Hello all, enjoy the puzzle...
| Code: |
+-------+-------+-------+
| 5 . . | . . 8 | . . . |
| . 3 . | 9 6 . | 5 . . |
| . 7 . | . . 4 | . . 1 |
+-------+-------+-------+
| . . 6 | . . . | . 7 . |
| 9 . 2 | . . . | 3 . 4 |
| . 5 . | . . . | 9 . . |
+-------+-------+-------+
| 1 . . | 4 . . | . 6 . |
| . . 5 | . 8 1 | . 9 . |
| . . . | 3 . . | . . 8 |
+-------+-------+-------+
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Play this puzzle online at the Daily Sudoku site
cheers...immp |
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dongrave
Joined: 06 Mar 2014
Posts: 572
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| Posted: Wed Oct 06, 2021 7:41 pm Post subject: |
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| Thanks for the puzzle immp! I settled for a 2-step solution and each step used a chain with a contradiction. I hope some others post their solutions! |
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Mogulmeister
Joined: 03 May 2007
Posts: 1151
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| Posted: Fri Oct 08, 2021 3:27 am Post subject: |
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| Code: | +----------------+-------------------+---------------+
| 5 26 4 | 127 1237 8 | 267 23 9 |
| 8 3 1 | 9 6 27 | 5 4 27 |
| 26 7 9 | 25 235 4 | 268 238 1 |
+----------------+-------------------+---------------+
| 34 148 6 | 1258 12359 2359 | 128 7 25 |
| 9 18 2 | 15678 157 567 | 3 158 4 |
| 7 5 38 | 128 4 23 | 9 128 6 |
+----------------+-------------------+---------------+
| 1 289 38 | 4 2579 2579 | 27 6 2357 |
| 2346 246 5 | 267 8 1 | 247 9 237 |
| 246 2469 7 | 3 259 2569 | 124 125 8 |
+----------------+-------------------+---------------+ |
Nice puzzle Immp - after basics. |
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Mogulmeister
Joined: 03 May 2007
Posts: 1151
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| Posted: Thu Oct 14, 2021 3:00 pm Post subject: |
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r13c8 has an ANP 23-238. IF (8=23) then puzzle solved r1c2 <> 6. However, when (23=8 ) I thought I had found a contradiction that proved r3c8 <> 8 but no...back to the drawing board .....fairly sure one could demonstrate that r3c8 <>8. (ed - you can because r6c6 becomes 3 which then creates a row of singles which in turn create multiple contradictions in blocks 8 and 9 so r3c8 def not 8 )
R3c8 <> 8 wasn't one you found was it dongrave ? |
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