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ZeroAssoluto
Joined: 05 Feb 2017
Posts: 942
Location: Rimini, Italy
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 Posted: Mon Sep 06, 2021 9:27 am Post subject: Sep 06 VH |
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Hi everyone,
| Code: |
+------------+-----------+-----------+
| 4 12 8 | 9 6 12 | 7 3 5 |
| 3 1257 579 | 47 12 8 | 29 24 6 |
| 6 27 79 | 3 5 47 | 289 248 1 |
+------------+-----------+-----------+
| 8 67 367 | 56 23 25 | 4 1 9 |
| 5 46 346 | 1 7 9 | 236 26 8 |
| 2 9 1 | 468 38 46 | 36 5 7 |
+------------+-----------+-----------+
| 7 568 56 | 568 4 3 | 1 9 2 |
| 9 4568 456 | 2 18 15 | 68 7 3 |
| 1 3 2 | 678 9 67 | 5 68 4 |
+------------+-----------+-----------+
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Play this puzzle online at the Daily Sudoku site
| Quote: | XY-Wing 3,6,8 in r6c57,r8c7 and -8 in r8c5
or
Skyscraper with number 6 in r69c6,r59c8 and -6 in r6c7 |
Ciao Gianni |
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TomC
Joined: 30 Oct 2020
Posts: 358
Location: Wales
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| Posted: Mon Sep 06, 2021 12:09 pm Post subject: |
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Using the same cells in the skyscraper
Either r4c4 <> 6 as then no 6's in box 4
or r5c23 <> 6 as then no 6's in row 4 |
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Mogulmeister
Joined: 03 May 2007
Posts: 1151
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| Posted: Wed Sep 08, 2021 7:28 am Post subject: |
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Tom
If you put a 6 in r4c4 aren't we left with a 46 pair in r5 (box 4) ? |
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TomC
Joined: 30 Oct 2020
Posts: 358
Location: Wales
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| Posted: Wed Sep 08, 2021 7:57 am Post subject: |
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| Mogulmeister wrote: | Tom
If you put a 6 in r4c4 aren't we left with a 46 pair in r5 (box 4) ? |
This is what I saw
If r4c4 =6 then r9c6=6, r5c8=6 ==> no 6's in box 4, but if you travel a different road you will see something else! |
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Mogulmeister
Joined: 03 May 2007
Posts: 1151
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| Posted: Wed Sep 08, 2021 8:24 am Post subject: |
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| Fair enough ! The mark of a contradiction. |
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