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May 4 VH(X)

 
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RobertRattley



Joined: 24 Jun 2007
Posts: 118
Location: Australia

PostPosted: Wed May 04, 2016 1:44 am    Post subject: May 4 VH(X) Reply with quote

Oh dear! Another VH that, by the definition we've been accepting for all these years, is not "very hard": needs no wings.

But I found it a delightful "hard": it needs a pair, a triple, and then another pair. Before I found these, I'd made a terrific mess with all my "pencil marks".
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Marty R.



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

PostPosted: Wed May 04, 2016 12:08 pm    Post subject: Reply with quote

Yes, sir, another "wingless" one. Sad
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dongrave



Joined: 06 Mar 2014
Posts: 568

PostPosted: Thu May 05, 2016 1:47 am    Post subject: Reply with quote

Wow! I thought I had screwed up again! That's pretty unusual, isn't it Marty? I've only been following this site for a couple of years but this seems pretty unusual to me.
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Marty R.



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

PostPosted: Thu May 05, 2016 3:17 am    Post subject: Reply with quote

Don, it does happen from time to time. I don't know the frequency, but it's just enough so it's not a big surprise. If I knew anything about constructing puzzles, I'd have an understanding as to how it happens. I doubt that Sam INTENDS for it to happen occasionally.
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Jeff



Joined: 06 May 2007
Posts: 46

PostPosted: Sun May 08, 2016 2:43 am    Post subject: Reply with quote

Code:

+----------------+----------+--------------+
| 2    359  6    | 1  45 8  | 4579 39  379 |
| 1345 1359 1359 | 7  6  29 | 45   8   239 |
| 458  7    589  | 3  45 29 | 4569 1   269 |
+----------------+----------+--------------+
| 9    23   37   | 5  1  4  | 67   26  8   |
| 1578 15   4    | 89 2  6  | 3    59  79  |
| 6    25   58   | 89 3  7  | 1    259 4   |
+----------------+----------+--------------+
| 35   8    2359 | 26 7  1  | 69   4   36  |
| 37   4    237  | 26 9  5  | 8    367 1   |
| 17   6    179  | 4  8  3  | 2    79  5   |
+----------------+----------+--------------+

Here is what I have on this puzzle.  I have spent quite a while trying to figure out how to solve this with no avail.  All the comments so far indicate that it is very simple.  Please tell me what I am missing.  Many thanks,  Jeff
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dongrave



Joined: 06 Mar 2014
Posts: 568

PostPosted: Sun May 08, 2016 2:48 pm    Post subject: Reply with quote

I didn't think it was simple; it just didn't require any wings! It's easy to miss. You've got to look a little closer for locked candidates.
Quote:
You've got locked 9's in box 7!

Hey, by the way. How did you eliminate the 9 from r7c9?
I'm glad you printed this grid out because I was wondering if it was at around this point that the computer applied a VH move.
Maybe the 379 XYZ Wing with pivot at r1c9? But then again, maybe not since it doesn't appear to solve it.
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Jeff



Joined: 06 May 2007
Posts: 46

PostPosted: Sun May 08, 2016 5:56 pm    Post subject: Reply with quote

I can't believe I missed the locked 9's in Box 7. I eliminated the 9 from R7C9 using a 679 XYZ pivoted in R4C7.

Many thanks. Jeff
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