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Oct 22 VH

 
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Clement



Joined: 24 Apr 2006
Posts: 640
Location: Dar es Salaam Tanzania

PostPosted: Mon Oct 21, 2013 10:11 pm    Post subject: Oct 22 VH Reply with quote

Code:

+---------+----------+-----------+
| 9 3   5 | 7   2 46 | 16  14 8  |
| 7 8   2 | 3   1 46 | 569 49 59 |
| 1 4   6 | 8   5 9  | 7   2  3  |
+---------+----------+-----------+
| 4 1   9 | 2   6 5  | 8   3  7  |
| 5 2   8 | 4   7 3  | 1-9  6  *19 |
| 6 7   3 | 9   8 1  | 2   5  4  |
+---------+----------+-----------+
| 3 569 1 | 56  4 7  | *59  8  2  |
| 8 59  7 | 15  3 2  | 4   19 6  |
| 2 56  4 | 156 9 8  | 3   7  #15 |
+---------+----------+-----------+
XY-Wing 59-15-19 pivoted in r9c9; r5c7<>9; stte.
Also W-Wing 59 with SL 9 in col 8; r2c7<>5.
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Marty R.



Joined: 12 Feb 2006
Posts: 5065
Location: Rochester, NY, USA

PostPosted: Tue Oct 22, 2013 1:45 am    Post subject: Reply with quote

A BUG+3 will work as well.
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hughwill



Joined: 05 Apr 2010
Posts: 142
Location: Birmingham UK

PostPosted: Tue Oct 22, 2013 10:03 am    Post subject: Oct 22 VH Reply with quote

Clement's 159 XY wing is a 'double'. The 159 XY wing (pivot r8c8 - making
r2c8=4) also works in one while the other 2(!) 159 XY wings don't do the
trick.

A record number of XY wings using the same numbers? Probably not,
but it made a simplish VH more interesting.

Hugh
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