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Jun 28 VH

 
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Clement



Joined: 24 Apr 2006
Posts: 1110
Location: Dar es Salaam Tanzania

PostPosted: Mon Jun 27, 2016 11:41 pm    Post subject: Jun 28 VH Reply with quote

Code:

+--------------------+---------------+----------------+
| 45    457    3     | 9   6    458  | 478    1    2  |
| 8     1      579   | 347 357  2    | 6      49   37 |
| 249   6      279   | 1   378  48   | 34789  489  5  |
+--------------------+---------------+----------------+
| 23459 234579 25789 | 78  1    6    | 235789 2589 37 |
| 1     279    26789 | 5   789  3    | 2789   2689 4  |
| 359   3579   56789 | 2   4    89   | 35789  5689 1  |
+--------------------+---------------+----------------+
| 7     2589   1     | 48  2589 4589 | 245    3    6  |
| 235   2358   4     | 6   2358 1    | 25     7    9  |
| 6     2359   259   | 34  2359 7    | 1      245  8  |
+--------------------+---------------+----------------+

X-Wing on 4 in r29; r3c8, r7c4 <> 4 opens
XY-Wing 59-4 pivoted in r2c3; r1c7 <> 4; stte
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the_lock_man



Joined: 18 Dec 2012
Posts: 40
Location: Portsmarfff, UK

PostPosted: Tue Jun 28, 2016 11:58 am    Post subject: Reply with quote

The X-Wing also opens another XY-Wing 4-89, pivot r3c8, making r2c4<>4, which also STTE.
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dongrave



Joined: 06 Mar 2014
Posts: 563

PostPosted: Wed Jun 29, 2016 1:32 am    Post subject: Reply with quote

Neat! I found the X-Wing of 7's in c49 which opened up the 59-4 XY-Wing with pivot at r2c3 (so r1c7<>4) but then I still had to use the 489 XYZ-Wing with pivot at r3c8 to solve it (r3c7<>4 so r7c7=4). Not as nice as Clement's or lock man's solution though. Good one!
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