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Jan 25 VH

 
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Clement



Joined: 24 Apr 2006
Posts: 663
Location: Dar es Salaam Tanzania

PostPosted: Thu Jan 24, 2013 11:20 pm    Post subject: Jan 25 VH Reply with quote

Code:

+----------------+----------------+---------------+
| 234689 28 3689 | 234  7    1    | 389  5  23489 |
| 5      1  39   | 234  8    239  | 7    6  2349  |
| 23489  7  389  | 6    249  5    | 1    39 23489 |
+----------------+----------------+---------------+
| 17-8    3  4    | 57   19   89   | 6    2  589   |
| 16-8    *58 1568 | 1234 1249 2389 | 389  7  389   |
| 7-8     9  2    | 57   6    38   | 4    1  358   |
+----------------+----------------+---------------+
| 139    #25 7    | 8    12   4    | 2359 39 6     |
| 139    4  139  | 12   5    6    | 239  8  7     |
| *28     6  58   | 9    3    7    | 25   4  1     |
+----------------+----------------+---------------+
XY-Wing 28-25-58 pivoted in r7c2; r456c1<>8 solves it.
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RobertRattley



Joined: 24 Jun 2007
Posts: 55
Location: Australia

PostPosted: Sun Jan 27, 2013 4:45 pm    Post subject: Reply with quote

Neat.

What I spotted was a different xy wing 258, same pivot but different pincers, whereby 8s are eliminated from column 3 creating a pair 39.
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