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Sep 27 VH

 
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Clement



Joined: 24 Apr 2006
Posts: 1111
Location: Dar es Salaam Tanzania

PostPosted: Mon Sep 26, 2016 11:31 pm    Post subject: Sep 27 VH Reply with quote

Code:

+-------------+-------------+-------------+
| 9   8   5   | 2 1    6    | 7   3   4   |
| 6   4   13  | 7 389  5    | 189 2   19  |
| 17  2   137 | 4 389  39   | 5   189 6   |
+-------------+-------------+-------------+
| 78  3   4   | 5 27   1    | 89  6   29  |
| 2   179 179 | 3 6    8    | 4   17  159 |
| 178 5   6   | 9 4    27   | 3   18-7 12  |
+-------------+-------------+-------------+
| 5   179 8   | 6 279  279  | 129 4   3   |
| 4   6   79  | 1 2379 2379 | 29  5   8   |
| 3   19  2   | 8 5    4    | 6   19  7   |
+-------------+-------------+-------------+

XY-Wing 12-7 pivoted in r6c9; r6c8 <> 7; stte
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hughwill



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

PostPosted: Tue Sep 27, 2016 9:08 am    Post subject: Reply with quote

Code:

+-------------+-------------+------------+
| 9   8   5   | 2 1    6    | 7   3   4  |
| 6   4   13  | 7 389  5    | 189 2   19 |
| 17  2   137 | 4 389  39   | 5   189 6  |
+-------------+-------------+------------+
| 78  3   4   | 5 27   1    | 89  6   29 |
| 2   79  179 | 3 6    8    | 4   17  5  |
| 178 5   6   | 9 4    27   | 3   178 12 |
+-------------+-------------+------------+
| 5   179 8   | 6 279  279  | 129 4   3  |
| 4   6   79  | 1 2379 2379 | 29  5   8  |
| 3   19  2   | 8 5    4    | 6   19  7  |
+-------------+-------------+------------+

Play this puzzle online at the Daily Sudoku site

Yes, the long range 17-9 or 79-1 XY-Wings pivot r5c8 or
r5c2 don't do the trick. (r5c2=loses the 1 through the box-
line in box 7)

Hugh
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Marty R.



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

PostPosted: Tue Sep 27, 2016 7:40 pm    Post subject: Reply with quote

I saw the 12-7 too late, as in after I played the 17-9.
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