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Dec 26 VH

 
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ZeroAssoluto



Joined: 05 Feb 2017
Posts: 941
Location: Rimini, Italy
PostPosted: Tue Dec 26, 2023 9:32 am    Post subject: Dec 26 VH Reply with quote
Hi everyone,

Code:

+----------+-------------+-----------+
| 4 17 8   | 139 13  179 | 2  6   5  |
| 3 6  17  | 5   2   17  | 4  8   9  |
| 9 5  2   | 4   8   6   | 3  1   7  |
+----------+-------------+-----------+
| 5 4  6   | 7   9   3   | 8  2   1  |
| 7 8  3   | 16  16  2   | 9  5   4  |
| 2 19 19  | 8   4   5   | 67 37  36 |
+----------+-------------+-----------+
| 6 79 4   | 2   135 19  | 57 379 8  |
| 1 2  59  | 39  7   8   | 56 4   36 |
| 8 3  579 | 69  56  4   | 1  79  2  |
+----------+-------------+-----------+

Play this puzzle online at the Daily Sudoku site

Quote:
XY-Wing 5,7,9 in r7c27,r8c3 and -5 in r8c7


Ciao Gianni
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TomC



Joined: 30 Oct 2020
Posts: 358
Location: Wales
PostPosted: Tue Dec 26, 2023 6:59 pm    Post subject: Reply with quote
There is an XY chain 57-79-69-56 in boxes 8 and 9 to remove <5> from r7c5 to solve

Look out for a XY wing 79-1 in there too! (Doesn't solve it in one though)
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