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Nov 7 VH

 
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Clement



Joined: 24 Apr 2006
Posts: 1111
Location: Dar es Salaam Tanzania

PostPosted: Sun Nov 06, 2016 10:46 pm    Post subject: Nov 7 VH Reply with quote

Code:

+--------------+----------------+------------+
| 68  1    368 | 26  23568  358 | 7   9   4  |
| 7   2368 9   | 46  3468   1   | 28  38  5  |
| 4   238  5   | 9   38     7   | 128 138 6  |
+--------------+----------------+------------+
| 3   689  4   | 167 56789  589 | 156 2   78 |
| 568 689  1   | 3   456789 2   | 56  45  78 |
| 568 7    2   | 146 4568   458 | 9   145 3  |
+--------------+----------------+------------+
| 9   35   37  | 8   1      6   | 4   57  2  |
| 2   468  678 | 5   479    49  | 3   78  1  |
| 1   458  78  | 247 2347   34  | 58  6   9  |
+--------------+----------------+------------+

XY-Wing 58-7 pivoted in r9c7; r7c3 <> 7 opens
XY-Wing 79-8 pivoted in r5c5; r4c9 <> 8; stte
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA

PostPosted: Mon Nov 07, 2016 7:59 am    Post subject: Reply with quote

Same. Interesting puzzle with lots of basics left after the wings.
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Earl



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

PostPosted: Mon Nov 07, 2016 2:53 pm    Post subject: Nov 7 VH Reply with quote

Second step also a 89 W-wing (78's C9) R5C5 = 7

Early Earl
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George Woods



Joined: 28 Mar 2006
Posts: 304
Location: Dorset UK

PostPosted: Mon Nov 07, 2016 4:11 pm    Post subject: another first ove Reply with quote

w wing 78 (boxes 7 and 9) operating on 7s in row 7 so that r9c7 <> 8..... and eventually to Clement's second XY wing
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