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Jul 7 VH

 
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Clement



Joined: 24 Apr 2006
Posts: 1111
Location: Dar es Salaam Tanzania
PostPosted: Wed Jul 07, 2010 5:05 am    Post subject: Jul 7 VH Reply with quote
XY-Wing 89 58 59 Pivoted in BOX 5 removing 9 in r4c8 solves it.
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keith



Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA
PostPosted: Wed Jul 07, 2010 12:41 pm    Post subject: Reply with quote
Ther are a couple of XYZ-wings that also solve it; for example 15-8 solves R4C6 as 9.

Keith
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