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May 20 VH

 
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roaa



Joined: 18 Apr 2009
Posts: 112
Location: Sweden

PostPosted: Fri May 20, 2016 9:53 am    Post subject: May 20 VH Reply with quote

XY wing, pivot r2c3 => r2c1 <> 6
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Marty R.



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

PostPosted: Fri May 20, 2016 2:18 pm    Post subject: Reply with quote

After basics.


Code:

+------------+----------+-----------+
| 3   56  4  | 1  57 8  | 9   67  2 |
| 156 9   25 | 4  57 26 | 8   167 3 |
| 7   126 8  | 9  3  26 | 16  5   4 |
+------------+----------+-----------+
| 9   26  3  | 8  16 4  | 5   12  7 |
| 56  4   25 | 3  16 7  | 12  9   8 |
| 8   7   1  | 5  2  9  | 3   4   6 |
+------------+----------+-----------+
| 4   3   9  | 27 8  1  | 267 26  5 |
| 15  15  6  | 27 4  3  | 27  8   9 |
| 2   8   7  | 6  9  5  | 4   3   1 |
+------------+----------+-----------+

Play this puzzle online at the Daily Sudoku site
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dongrave



Joined: 06 Mar 2014
Posts: 568

PostPosted: Fri May 20, 2016 5:28 pm    Post subject: Reply with quote

(Thanks for posting the grid Marty.) There's also a 56-2 XY wing with pivot at r1c2 and a 26-5 XY wing with pivot at r4c2. And I noticed the 27 UR Type 1 but I'd never think of using it.
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