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Mar 25 VH

 
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Clement



Joined: 24 Apr 2006
Posts: 1111
Location: Dar es Salaam Tanzania
PostPosted: Sat Mar 24, 2012 11:01 pm    Post subject: Mar 25 VH Reply with quote
Two steps:
XY-Wing 789 pivoted in r2c9; r1c9 and r6c8<>7 opens another
XY-Wing 157 pivoted in r1c8; r6c1<>1 which solves it.
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Clement



Joined: 24 Apr 2006
Posts: 1111
Location: Dar es Salaam Tanzania
PostPosted: Sun Mar 25, 2012 11:07 am    Post subject: Mar 25 VH Reply with quote
Actually a one steper solution is the W-Wing 16 with Strong Link 1 in col 9; r4c8<>6.
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