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June 7 VH

 
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roaa



Joined: 18 Apr 2009
Posts: 112
Location: Sweden
PostPosted: Tue Jun 07, 2016 10:43 am    Post subject: June 7 VH Reply with quote
XY-wing 268 => r8c1 = 1 which solves it.
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
PostPosted: Tue Jun 07, 2016 2:50 pm    Post subject: Reply with quote
Code:

+---------+-----------+-------------+
| 28 1 9  | 28  4  3  | 6   5    7  |
| 3  5 28 | 268 7  26 | 49  1    49 |
| 6  4 7  | 5   9  1  | 2   3    8  |
+---------+-----------+-------------+
| 7  2 3  | 4   1  8  | 5   9    6  |
| 9  8 4  | 3   56 56 | 1   7    2  |
| 5  6 1  | 7   2  9  | 348 48   34 |
+---------+-----------+-------------+
| 1  9 28 | 26  3  7  | 48  2468 5  |
| 28 3 5  | 9   68 4  | 7   268  1  |
| 4  7 6  | 1   58 25 | 39  28   39 |
+---------+-----------+-------------+

Play this puzzle online at the Daily Sudoku site

R8c1 does not have 1 as a candidate. The wing=> -8r8c1
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