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Dec 1 VH

 
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Clement



Joined: 24 Apr 2006
Posts: 684
Location: Dar es Salaam Tanzania

PostPosted: Sat Dec 01, 2012 6:45 am    Post subject: Dec 1 VH Reply with quote

XY-Wing 59 -15-19 pivoted in r5c8; r3c7<>9
Also BUG+1; r6c8=1.
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hughwill



Joined: 05 Apr 2010
Posts: 215
Location: Birmingham UK

PostPosted: Sat Dec 01, 2012 10:09 am    Post subject: Dec 1 VH Reply with quote

After basics:
Code:

+--------+--------+-----------+
| 1 5 4  | 9 6  3 | 8  2   7  |
| 8 9 6  | 1 7  2 | 4  3   5  |
| 2 7 3  | 8 5  4 | 19 19  6  |
+--------+--------+-----------+
| 7 3 25 | 6 28 1 | 59 4   89 |
| 6 8 15 | 3 4  9 | 7  15  2  |
| 9 4 12 | 7 28 5 | 16 168 3  |
+--------+--------+-----------+
| 3 2 8  | 4 9  7 | 56 56  1  |
| 5 6 9  | 2 1  8 | 3  7   4  |
| 4 1 7  | 5 3  6 | 2  89  89 |
+--------+--------+-----------+

Play this puzzle online at the Daily Sudoku site

I'm not complaining as we've had consecutive VHs (most unusual and
most welcome) but this one must rate as one of the easiest ever. Apart
from Clement's solutions, there's also a one shot 156 XY available.

Hugh
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kuskey



Joined: 10 Dec 2008
Posts: 127
Location: Pembroke, NH

PostPosted: Sat Dec 01, 2012 5:14 pm    Post subject: Dec 1 VH Reply with quote

Just to recap, there are 5 solutions: 2 versions of xy 156 with pivots at r6c7 and r7c8, 2 versions for xy 159 pivots at r4c7 and r5c8, and the obvious BUG+1 in box 6. There may be other advanced solutions but my ride ends here.
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Marty R.



Joined: 12 Feb 2006
Posts: 5164
Location: Rochester, NY, USA

PostPosted: Sat Dec 01, 2012 6:15 pm    Post subject: Reply with quote

Quote:
we've had consecutive VHs (most unusual and
most welcome)


Generally, the consecutives occur only on the last day of the month and the first of the next month, as is the case here.
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hughwill



Joined: 05 Apr 2010
Posts: 215
Location: Birmingham UK

PostPosted: Sun Dec 02, 2012 11:09 am    Post subject: Re: Dec 1 VH Reply with quote

kuskey wrote:
Just to recap, there are 5 solutions: 2 versions of xy 156 with pivots at r6c7 and r7c8, 2 versions for xy 159 pivots at r4c7 and r5c8, and the obvious BUG+1 in box 6. There may be other advanced solutions but my ride ends here.


And there's always the lucky guess... Very Happy
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