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Nov 25 VH

 
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Clement



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

PostPosted: Thu Nov 24, 2016 9:57 pm    Post subject: Nov 25 VH Reply with quote

Code:

+---------+------------+---------+
| 9  3 18 | 46 678-4 78 | 16 2 5  |
| 4  2 18 | 5  68*   9  | 3  7 16 |
| 7  6 5  | 2  3    1  | 8  9 4  |
+---------+------------+---------+
| 5  9 3  | 8  2    6  | 4  1 7  |
| 6  4 7  | 1  5    3  | 2  8 9  |
| 8  1 2  | 7  9    4  | 5  6 3  |
+---------+------------+---------+
| 2  5 4  | 9  1    78 | 67 3 68 |
| 13 8 9  | 36 67   5  | 17 4 2  |
| 13 7 6  | 3-4 48   2  | 9  5 18 |
+---------+------------+---------+

XY-Wing 68-4 pivoted in r2c5; r1c5, r9c4 <> 4; stte
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hughwill



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

PostPosted: Fri Nov 25, 2016 3:24 pm    Post subject: Nov 25 VH Reply with quote

Code:

+---------+------------+----------+
| 9  3 18 | 46 4678 78 | 16 2  5  |
| 4  2 18 | 5  68   9  | 3  7  16 |
| 7  6 5  | 2  3    1  | 8  9  4  |
+---------+------------+----------+
| 5  9 3  | 8  2    6  | 4  1  7  |
| 6  4 7  | 1  5    3  | 2  8  9  |
| 8  1 2  | 7  9    4  | 5  6  3  |
+---------+------------+----------+
| 2  5 4  | 9  1    78 | 67 3  68 |
| 13 8 9  | 36 67   5  | 17 4  2  |
| 13 7 6  | 34 48   2  | 9  45 18 |
+---------+------------+----------+

Play this puzzle online at the Daily Sudoku site
The 67-8 XY-wing pivot r8c5 is also a one-stepper after r1c6=7
Hugh
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Stanley P



Joined: 27 Feb 2008
Posts: 20
Location: Tennessee, USA

PostPosted: Fri Nov 25, 2016 6:01 pm    Post subject: Nov 25 VH Reply with quote

Also an XY-Wing 16-8 pivot in R2C9 that does it.
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