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Apr 16 VH

 
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Clement



Joined: 24 Apr 2006
Posts: 685
Location: Dar es Salaam Tanzania

PostPosted: Mon Apr 15, 2013 9:47 pm    Post subject: Apr 16 VH Reply with quote

Code:

+-----------+-------------+--------------+
| 38 38 4   | 9  5    6   | 27  1    27  |
| 6  1  9   | 8  2    7   | 3   5    4   |
| 2  7  5   | 14 14   3   | 6-9  8    *69  |
+-----------+-------------+--------------+
| 4  5  1   | 2  6789 89  | 679 69   3   |
| 78 6  28  | 3  79   5   | 1   4    279 |
| 37 9  23  | 17 167  4   | 5   26   8   |
+-----------+-------------+--------------+
| 5  23 367 | 47 479  29  | 8   2369 1   |
| 9  28 68  | 5  3    1   | 4   7    #26  |
| 1  4  37  | 6  789  289 | *29  239  5   |
+-----------+-------------+--------------+
XY-Wing 69-26-29 pivoted in r8c9; r3c7<>9 stte.
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hughwill



Joined: 05 Apr 2010
Posts: 222
Location: Birmingham UK

PostPosted: Tue Apr 16, 2013 12:15 pm    Post subject: Apr 16 VH Reply with quote

Longer route:

479 xyz pivot r7c5 sets r9c3 to 7, followed by 236 xy pivot r6c3
setting r8c9 to 6 - then basics.

Hugh
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RobertRattley



Joined: 24 Jun 2007
Posts: 57
Location: Australia

PostPosted: Thu Apr 18, 2013 5:33 pm    Post subject: Reply with quote

I like hughwill's "Longer route"! I didn't spot it.

But I did spot:

(1) siamese twin to clement's xy wing 269, pivot in r9c7; and

(2) xy wing 268,

either of which also solves the puzzle.

Delightful stuff!
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