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Jun 28 VH

 
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Clement



Joined: 24 Apr 2006
Posts: 1111
Location: Dar es Salaam Tanzania
PostPosted: Mon Jun 27, 2011 11:23 pm    Post subject: Jun 28 VH Reply with quote
XY-Wing 14 17 47 pivoted in r8c8 eliminates 4 in r7c2 solving it.
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prakash



Joined: 02 Jan 2008
Posts: 67
Location: New Jersey, USA
PostPosted: Tue Jun 28, 2011 2:41 am    Post subject: Reply with quote
An X wing in 1s sets up a W wing in 47, resulting in r8c8=1. This solves the puzzle.
-PJ
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kuskey



Joined: 10 Dec 2008
Posts: 141
Location: Pembroke, NH
PostPosted: Tue Jun 28, 2011 1:41 pm    Post subject: 28 June VH Reply with quote
You can also work the 147 xy-wing with pivot at r7c9 setting r8c1<>1.
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