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Dec 7 VH

 
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Clement



Joined: 24 Apr 2006
Posts: 638
Location: Dar es Salaam Tanzania

PostPosted: Tue Dec 06, 2011 10:58 pm    Post subject: Dec 7 VH Reply with quote

XY-Wing 257 pivoted in r3c3; r5c1<>7 solves it.
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arkietech



Joined: 31 Jul 2008
Posts: 1686
Location: Northwest Arkansas USA

PostPosted: Wed Dec 07, 2011 11:23 am    Post subject: Reply with quote

also solves it
Code:
 *-----------------------------------------------------------*
 | 27    137   4     | 123   6     13    | 9     5     8     |
 | 6     358   9     | 7     58    358   | 4     2     1     |
 | 258   158   25    | 1258  9     4     | 7     6     3     |
 |-------------------+-------------------+-------------------|
 | 3     9    *57    | 6    *57    2     | 8     1     4     |
 | 17    4     6     | 138   178   1378  | 5     9     2     |
 | 15    2     8     | 159   4     159   | 3     7     6     |
 |-------------------+-------------------+-------------------|
 | 9     578   1     | 4     2     578   | 6     3     57    |
 | 4    *57    3     | 15   *157   6     | 2     8     9     |
 | 2578  6     25-7  | 589   3     5789  | 1     4     57    |
 *-----------------------------------------------------------*
skyscraper
(7)r4c3=(7)r4c5-(7)r8c5=(7)r8c2 => r9c3<>7
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