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Dec 08 VH

 
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ZeroAssoluto



Joined: 05 Feb 2017
Posts: 1020
Location: Rimini, Italy
PostPosted: Tue Dec 08, 2020 9:12 am    Post subject: Dec 08 VH Reply with quote
Hi everyone,

Code:

+---------------+--------------+--------------+
| 2457 9    47  | 3   158  458 | 258 1246 168 |
| 6    345  1   | 458 9    2   | 7   34   38  |
| 2345 8    34  | 6   15   7   | 25  1234 9   |
+---------------+--------------+--------------+
| 1    26   9   | 7   4    58  | 3   26   58  |
| 37   367  8   | 59  2    1   | 4   679  567 |
| 47   247  5   | 89  6    3   | 28  1279 178 |
+---------------+--------------+--------------+
| 9    3457 6   | 2   357  45  | 1   8    37  |
| 3578 357  2   | 1   3578 9   | 6   37   4   |
| 3478 1    347 | 48  378  6   | 9   5    2   |
+---------------+--------------+--------------+

Play this puzzle online at the Daily Sudoku site

XY-Wing 4,5,8 in r47c6,r9c4 and -8 in r6c4

Ciao Gianni
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TomC



Joined: 30 Oct 2020
Posts: 359
Location: Wales
PostPosted: Wed Dec 09, 2020 10:35 am    Post subject: Reply with quote
From about this point in the grid I eliminated 8 from r1c6 using the 58 pair in r4 and the two 8's in r2

Is this a skyscraper?

Tom
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ZeroAssoluto



Joined: 05 Feb 2017
Posts: 1020
Location: Rimini, Italy
PostPosted: Wed Dec 09, 2020 1:27 pm    Post subject: Reply with quote
Hi Tom,

yes it's a Skyscraper which allows you to delete the number 8 also in r6c4.

Ciao Gianni
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