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Oct 27 VH

 
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Clement



Joined: 24 Apr 2006
Posts: 1111
Location: Dar es Salaam Tanzania
PostPosted: Wed Oct 26, 2011 10:57 pm    Post subject: Oct 27 VH Reply with quote
XY-Wing 57 25 27 pivoted in r6c4; r4c2<>7 or the same pivoted in r4c6; r6c2<>5 solves it.
The XYZ-Wing 235 with apex in r4c4; r4c6<>2 solves it as well.
Also the W-Wing 23 with strong link 2 in col 6 setting r4c4<>3.
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arkietech



Joined: 31 Jul 2008
Posts: 1834
Location: Northwest Arkansas USA
PostPosted: Thu Oct 27, 2011 6:23 am    Post subject: Reply with quote
Code:
 *--------------------------------------------------*
 | 1    9    5    | 7    2    68   | 68   4    3    |
 | 8    6    4    | 1    5    3    | 9    7    2    |
 | 7    3    2    | 69   89   4    | 68   5    1    |
 |----------------+----------------+----------------|
 | 9    57   8    | 235  4   *27   | 1    3-2  6    |
 | 4    2    1    | 69   389  68   | 7    38   5    |
 | 3    57   6    | 5-2 *78   1    | 4   *28   9    |
 |----------------+----------------+----------------|
 | 5    1    37   | 4    37   9    | 2    6    8    |
 | 2    4    9    | 8    6    5    | 3    1    7    |
 | 6    8    37   | 23   1    27   | 5    9    4    |
 *--------------------------------------------------*
 XY Wing 782 r4c6,r6c58 => r4c8,r6c4<>2 does it also
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
PostPosted: Thu Oct 27, 2011 3:53 pm    Post subject: Reply with quote
Additionally, basics reduces the grid to a BUG+2 if one is interested in techniques that are not standard VH.
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