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Aug 29 VH

 
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Mindwarp



Joined: 13 Sep 2007
Posts: 25
Location: St. Ives, England
PostPosted: Sun Aug 29, 2010 3:09 am    Post subject: Aug 29 VH Reply with quote
I think its called an XYZ pivot on R1C3 giving 3 in R3C3 puzzle solves itself from there.
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kuskey



Joined: 10 Dec 2008
Posts: 141
Location: Pembroke, NH
PostPosted: Sun Aug 29, 2010 4:17 am    Post subject: 29 Aug VH Reply with quote
For me it was two xy-wings:the first was a 159 wing with pivot at r8c8 eliminating 1s at r4c9 and r6c9, followed by a 579 wing with pivot at r1c5 eliminating 7 at r8c2.
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
PostPosted: Sun Aug 29, 2010 4:33 am    Post subject: Re: Aug 29 VH Reply with quote
Mindwarp wrote:
I think its called an XYZ pivot on R1C3 giving 3 in R3C3 puzzle solves itself from there.


Mindwarp,

Are you referring to an XYZ-Wing? This is where I wind up after basics and I don't see an XYZ-Wing pivoted in r1c3.

Code:

+-----------+--------------+-------------+
| 2 57  357 | 4  579  1    | 8   39  6   |
| 8 9   1   | 3  6    2    | 7   4   5   |
| 6 4   357 | 89 5789 78   | 12  139 129 |
+-----------+--------------+-------------+
| 5 13  8   | 2  34   9    | 6   7   14  |
| 7 2   4   | 6  1    5    | 9   8   3   |
| 9 13  6   | 7  348  38   | 125 15  124 |
+-----------+--------------+-------------+
| 4 567 57  | 89 3789 3678 | 15  2   19  |
| 3 567 2   | 1  79   67   | 4   59  8   |
| 1 8   9   | 5  2    4    | 3   6   7   |
+-----------+--------------+-------------+

Play this puzzle online at the Daily Sudoku site
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Mindwarp



Joined: 13 Sep 2007
Posts: 25
Location: St. Ives, England
PostPosted: Mon Aug 30, 2010 4:24 am    Post subject: Reply with quote
Cells involved R1C2, R1C3, R3C3 and R7C3.
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