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May 1 VH

 
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roaa



Joined: 18 Apr 2009
Posts: 72
Location: Sweden

PostPosted: Wed May 01, 2013 8:17 am    Post subject: May 1 VH Reply with quote

The usual one: An xy-wing 235 forces r4c1=3 which solves it.
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hughwill



Joined: 05 Apr 2010
Posts: 208
Location: Birmingham UK

PostPosted: Wed May 01, 2013 8:37 am    Post subject: May 1 VH Reply with quote

After basics:

Code:

+-----------+---------+----------+
| 8  59 59  | 2  7  3 | 4  6  1  |
| 1  7  6   | 4  5  8 | 23 29 39 |
| 23 34 234 | 6  1  9 | 7  8  5  |
+-----------+---------+----------+
| 35 49 49  | 35 8  2 | 1  7  6  |
| 7  8  1   | 35 6  4 | 9  35 2  |
| 6  2  35  | 7  9  1 | 8  35 4  |
+-----------+---------+----------+
| 9  13 23  | 8  4  6 | 5  12 7  |
| 25 15 8   | 19 23 7 | 6  4  39 |
| 4  6  7   | 19 23 5 | 23 19 8  |
+-----------+---------+----------+

Play this puzzle online at the Daily Sudoku site

For a long time I missed the box-line in r7 removing the 3s in r7 c 1+2 so struggled until I saw it........!
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the_lock_man



Joined: 18 Dec 2012
Posts: 10
Location: Portsmarfff, UK

PostPosted: Wed May 01, 2013 11:07 am    Post subject: Reply with quote

Don't you just hate it when you don't see something simple like that? I used a W wing 23 in boxes 1 & 7 to remove the 2 in R3C3
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RobertRattley



Joined: 24 Jun 2007
Posts: 57
Location: Australia

PostPosted: Sat May 04, 2013 6:27 pm    Post subject: Reply with quote

Hugh

Me too (missed the row 7 3 at first).

I also missed a similar elimination of a 9 at the top. In fact, at first I went with a harder method: an x wing of 9s!

But eventually I found that lovely, simple xy wing, no need for a preparatory x wing.
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