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Nov 8 VH

 
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Clement



Joined: 24 Apr 2006
Posts: 684
Location: Dar es Salaam Tanzania

PostPosted: Wed Nov 07, 2012 11:06 pm    Post subject: Nov 8 VH Reply with quote

Code:

+------------+--------------+-------------+
| 7  1  256  | 289 258  4   | 3689 36 689 |
| 8  24 246  | 239 23   1   | 5    7  469 |
| 9  3  45   | 6   7    58  | 48   1  2   |
+------------+--------------+-------------+
| 4  7  12   | 5   6    9   | 12   8  3   |
| 23 8  239  | 4   1    7   | 269  5  69  |
| 5  6  19   | 28  28   3   | 19   4  7   |
+------------+--------------+-------------+
| 1  5  348  | 7   9    6   | 348  2  48  |
| *23 9  7    | #38  3458 258 | 3468 36 1   |
| 6  -24 2348 | 1   348  *28  | 7    9  5   |
+------------+--------------+-------------+
XY-Wing 23-38-28 pivoted in r8c4; r9c2<>2 solves it.
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George Woods



Joined: 28 Mar 2006
Posts: 234
Location: Dorset UK

PostPosted: Thu Nov 08, 2012 1:48 pm    Post subject: ER solution Reply with quote

r7c3 cannot be 4 (strong linked 4s in col 9 mean that a 4 is denied in square A) this I think is classed as an 'ER' anyway it works!
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Marty R.



Joined: 12 Feb 2006
Posts: 5175
Location: Rochester, NY, USA

PostPosted: Thu Nov 08, 2012 4:30 pm    Post subject: Reply with quote

It is an ER, with the ERI in r7c7 and the strongly linked 4s in r3.
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