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Nov 23 VH

 
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roaa



Joined: 18 Apr 2009
Posts: 65
Location: Sweden

PostPosted: Sat Nov 23, 2013 7:52 am    Post subject: Nov 23 VH Reply with quote

I used two xy-wings, both 789.
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tlanglet



Joined: 17 Oct 2007
Posts: 2461
Location: Northern California Foothills

PostPosted: Sat Nov 23, 2013 2:14 pm    Post subject: Reply with quote

Code:
 *-----------------------------------------------------------*
 | 79    4     6     | 378   2     38    | 5     1     789   |
 | 27    8     1     | 9     4     5     | 6     27    3     |
 | 2579  3     59    | 78    1     6     | 79    2789  4     |
 |-------------------+-------------------+-------------------|
 | 6     2     3     | 1     5     4     | 8     79    79    |
 | 8     1     4     | 6     9     7     | 2     3     5     |
 | 59    59    7     | 38    38    2     | 4     6     1     |
 |-------------------+-------------------+-------------------|
 | 4     6   a89     | 5     378   38-9  | 1    b789   2     |
 | 3     579  589    | 2     78    1     | 79    4     6     |
 | 1     7-9   2     | 4     6    d89    | 3     5    c789   |
 *-----------------------------------------------------------*

A w-wing(89) in r7c3 & r9c6 with strong link 8 in box 9 does the deadly deed.

In eureka notation: (9=8)r7c3-8r7c8=8r9c9-(8=9)r9c6 => r7c6, r9c2<>9

Ted
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Marty R.



Joined: 12 Feb 2006
Posts: 5061
Location: Rochester, NY, USA

PostPosted: Sun Nov 24, 2013 2:20 am    Post subject: Re: Nov 23 VH Reply with quote

roaa wrote:
I used two xy-wings, both 789.


Same, although I would designate them as 789 and 798.
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