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Mar 9 VH

 
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA

PostPosted: Thu Mar 09, 2017 12:53 pm    Post subject: Mar 9 VH Reply with quote

Code:

+------------+------------+----------+
| 3   1   59 | 6   2  4   | 7 89 58  |
| 6   4   8  | 9   57 57  | 3 2  1   |
| 57  79  2  | 3   8  1   | 6 49 45  |
+------------+------------+----------+
| 4   5   1  | 2   6  3   | 8 7  9   |
| 2   789 3  | 78  1  79  | 5 46 46  |
| 78  6   79 | 578 4  579 | 1 3  2   |
+------------+------------+----------+
| 15  78  45 | 14  3  2   | 9 68 678 |
| 9   2   6  | 57  57 8   | 4 1  3   |
| 178 3   47 | 14  9  6   | 2 5  78  |
+------------+------------+----------+

Play this puzzle online at the Daily Sudoku site
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ZeroAssoluto



Joined: 05 Feb 2017
Posts: 868
Location: Rimini, Italy

PostPosted: Thu Mar 09, 2017 2:08 pm    Post subject: Reply with quote

Hi everyone,
i find this way

Quote:
W-Wing 7,8 in r6c1,r7c2 connected by number 7 in r3c12 and r5c2,r9c1 not 8.


Ciao
Gianni
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA

PostPosted: Thu Mar 09, 2017 4:47 pm    Post subject: Reply with quote

I used the 59-7 XY-Wing pivoted in r1c3 => -7r6c1.
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ZeroAssoluto



Joined: 05 Feb 2017
Posts: 868
Location: Rimini, Italy

PostPosted: Thu Mar 09, 2017 10:46 pm    Post subject: Reply with quote

Another way can be a XY-Chain:
r7c2 87 - r3c2 79 - r1c3 95 - r7c3 54 - r9c3 47 - r9c9 78 and we can delete 8 from r9c1-r7c8-r7c9.

Ciao
Gianni
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