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Help with old May 2, 2006 puzzle

 
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Lynne_H



Joined: 13 Jul 2007
Posts: 3
PostPosted: Fri Jul 20, 2007 11:37 am    Post subject: Help with old May 2, 2006 puzzle Reply with quote
I'm stick - the hint says there is a 7 in r8c7. Can someone please explain why? I've stared at this off and on the past few days. Thanks, Lynne

Code:

+----------------+----------------+---------------+
| 2349 7   8     | 369   5   369  | 46  1    239  |
| 5    239 239   | 3689  4   1    | 678 2379 2379 |
| 1    349 6     | 389   7   2    | 48  349  5    |
+----------------+----------------+---------------+
| 8    5   239   | 23469 239 3469 | 1   237  237  |
| 23   6   4     | 5     1   7    | 9   8    23   |
| 7    239 1     | 239   239 8    | 5   6    4    |
+----------------+----------------+---------------+
| 349  349 3579  | 1     8   3459 | 2   479  6    |
| 2349 8   23579 | 23479 6   3459 | .   479  1    |
| 6    1   279   | 2479  29  49   | 3   5    8    |
+----------------+----------------+---------------+

Play this puzzle online at the Daily Sudoku site[/code]
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Lynne_H



Joined: 13 Jul 2007
Posts: 3
PostPosted: Fri Jul 20, 2007 11:42 am    Post subject: Missing cell - Reply with quote
oops - where the dot is in r8c7, the choices should be 47. Sorry about that - Lynne
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Steve R



Joined: 24 Oct 2005
Posts: 289
Location: Birmingham, England
PostPosted: Fri Jul 20, 2007 12:25 pm    Post subject: Reply with quote
It’s the old story of not seeing the wood for the trees.

The pair (68) in the second row serves to eliminate 7 from r2c7.

Steve
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