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Apr 7 VH

 
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hughwill



Joined: 05 Apr 2010
Posts: 207
Location: Birmingham UK

PostPosted: Mon Apr 07, 2014 9:13 am    Post subject: Apr 7 VH Reply with quote

Don't know where everyone is this morning- perhaps everyone had given
up waiting for a VH?

After basics:

Code:

+--------------+-----------+------------+
| 7   259  239 | 15  8 125 | 4  36  26  |
| 268 2568 26  | 45  3 245 | 9  1   7   |
| 1   4    23  | 6   7 9   | 25 358 258 |
+--------------+-----------+------------+
| 5   1679 679 | 2   4 8   | 3  679 169 |
| 3   27   4   | 9   1 6   | 8  57  25  |
| 269 1269 8   | 3   5 7   | 12 69  4   |
+--------------+-----------+------------+
| 4   79   79  | 8   6 3   | 15 2   15  |
| 68  3    5   | 147 2 14  | 67 489 89  |
| 268 268  1   | 457 9 45  | 67 48  3   |
+--------------+-----------+------------+

Play this puzzle online at the Daily Sudoku site

Two solutions- there may be more (Select box to view)
Quote:
A 'double' 125 XY-wing pivoted at r7c7 or r7c9 is a one step solution.
Pretty much the same numbers can be used for a 25 W-Wing which
also does it in 1
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arkietech



Joined: 31 Jul 2008
Posts: 1727
Location: Northwest Arkansas USA

PostPosted: Mon Apr 07, 2014 3:16 pm    Post subject: Reply with quote

125 xy-wing removes 5 in r7c9
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Marty R.



Joined: 12 Feb 2006
Posts: 5162
Location: Rochester, NY, USA

PostPosted: Mon Apr 07, 2014 4:02 pm    Post subject: Reply with quote

I also used the XY-Wing (12-5) pivoted in r6c7. There's also one pivoted in r5c9 but I don't see any pivoted in either r7c7 or r7c9.
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hughwill



Joined: 05 Apr 2010
Posts: 207
Location: Birmingham UK

PostPosted: Mon Apr 07, 2014 10:32 pm    Post subject: Apr 7 VH Reply with quote

My mistake Marty- so shocked at being the first to post at 9.13 I confused
the pivots with the positions of the numbers 'solved' by the xy-wings...... Embarassed
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