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Feb 14 VH

 
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danw



Joined: 31 Jul 2012
Posts: 16
Location: Phoenixville, PA USA

PostPosted: Sat Feb 14, 2015 11:17 am    Post subject: Feb 14 VH Reply with quote

I found the following one step solution:

Quote:
XY-wing 45-6 pivoted in r6c9; r4c1<>6, maybe stte but not sure yet


DanW
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hughwill



Joined: 05 Apr 2010
Posts: 422
Location: Birmingham UK

PostPosted: Sat Feb 14, 2015 2:07 pm    Post subject: Re: Feb 14 VH Reply with quote

danw wrote:
I found the following one step solution:

Quote:
XY-wing 45-6 pivoted in r6c9; r4c1<>6,
maybe stte but not sure yet

DanW


It is indeed, Dan. I think you can always check by pressing the Grade button
after putting the move in. If it doesn't say Very Hard you're done.

After Basics
Code:

+---------+---------+------------+
| 24 3 7  | 8  25 1 | 45  9   6  |
| 8  5 6  | 7  9  4 | 1   2   3  |
| 24 1 9  | 3  25 6 | 457 457 8  |
+---------+---------+------------+
| 16 2 14 | 9  3  5 | 8   46  7  |
| 56 7 8  | 46 1  2 | 9   3   45 |
| 3  9 45 | 46 8  7 | 456 1   2  |
+---------+---------+------------+
| 15 8 15 | 2  47 3 | 467 467 9  |
| 7  4 3  | 5  6  9 | 2   8   1  |
| 9  6 2  | 1  47 8 | 3   457 45 |
+---------+---------+------------+

Play this puzzle online at the Daily Sudoku site
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dongrave



Joined: 06 Mar 2014
Posts: 563

PostPosted: Sat Feb 14, 2015 2:17 pm    Post subject: Reply with quote

I'm sure Dan meant that the pivot was at r5c9 (instead of r6c9). There's also a 56-4 XY wing with pivot at r5c1 so r6c4<>4 which also solves it.
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danw



Joined: 31 Jul 2012
Posts: 16
Location: Phoenixville, PA USA

PostPosted: Sat Feb 14, 2015 4:54 pm    Post subject: Reply with quote

Thanks Don for correcting my typo on pivot.
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA

PostPosted: Sat Feb 14, 2015 8:27 pm    Post subject: Reply with quote

Also one (45-6) pivoted in r6c3=> r5c4<>6
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