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Sep 17 VH

 
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Marty R.



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

PostPosted: Sat Sep 17, 2016 5:23 am    Post subject: Sep 17 VH Reply with quote

Pinch-hitting for Clement, I guess.

Code:

+----------+--------+----------+
| 1  4  78 | 5 2  6 | 37  38 9 |
| 89 2  6  | 3 79 4 | 57  58 1 |
| 5  39 37 | 8 79 1 | 2   6  4 |
+----------+--------+----------+
| 2  7  5  | 6 3  9 | 1   4  8 |
| 89 6  38 | 4 1  5 | 39  7  2 |
| 4  39 1  | 7 8  2 | 359 35 6 |
+----------+--------+----------+
| 7  5  9  | 1 4  8 | 6   2  3 |
| 6  8  2  | 9 5  3 | 4   1  7 |
| 3  1  4  | 2 6  7 | 8   9  5 |
+----------+--------+----------+

Play this puzzle online at the Daily Sudoku site

Quote:
XY-Wing (78-3), pivot r1c3=> -3r5c7
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hughwill



Joined: 05 Apr 2010
Posts: 424
Location: Birmingham UK

PostPosted: Sat Sep 17, 2016 3:30 pm    Post subject: Reply with quote

I don't usually see them, but even I can see the BUG+1
making r6c7=3! There's also a W-Wing on 37s making r1c3=8
and probably more. Very sparse grid at the point of VH
methods needed.

Hugh
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Marty R.



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

PostPosted: Sat Sep 17, 2016 5:01 pm    Post subject: Reply with quote

Hugh, it's fairly typical that these puzzles have multiple solutions. I used to try and see how many I could find.
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