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Oct 28

 
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Earl



Joined: 30 May 2007
Posts: 677
Location: Victoria, KS

PostPosted: Fri Oct 28, 2016 1:24 pm    Post subject: Oct 28 Reply with quote

124 xy wing; R9C7 = 4

Early Earl
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dongrave



Joined: 06 Mar 2014
Posts: 568

PostPosted: Sat Oct 29, 2016 2:07 pm    Post subject: Reply with quote

Here's the grid I had after basics.
Code:

 +--------------+------------+--------------+
 | 48 25   6    | 58 1   3   | 7    9   24  |
 | 48 7    35   | 2  9   58  | 34   1   6   |
 | 9  12   13   | 6  7   4   | 23   8   5   |
 +--------------+------------+--------------+
 | 2  158  9    | 37 358 16  | 156  4   17  |
 | 3  1458 1457 | 47 458 126 | 1256 267 9   |
 | 17 6    45   | 9  45  12  | 8    27  3   |
 +--------------+------------+--------------+
 | 5  14   147  | 13 23  9   | 126  267 8   |
 | 6  3    8    | 14 24  7   | 9    5   12  |
 | 17 9    2    | 58 6   58  | 14   3   147 |
 +--------------+------------+--------------+

And from here, Earl's 12-4 XY with pivot at r8c9 solves it (r2c7<>4) and so does the 147 XYZ with pivot at r9c9 (r8c9<>1). The 17-2 XY with pivot at r4c9 does not and neither does the 27-1 XY with pivot at r6c8. Any others that I missed?
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