dailysudoku.com Forum Index dailysudoku.com
Discussion of Daily Sudoku puzzles
 
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

May 4 VH(X)

 
Post new topic   Reply to topic    dailysudoku.com Forum Index -> Daily Sudoku puzzles
View previous topic :: View next topic  
Author Message
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".
Back to top
View user's profile Send private message Send e-mail
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
Back to top
View user's profile Send private message
dongrave



Joined: 06 Mar 2014
Posts: 563

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.
Back to top
View user's profile Send private message
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.
Back to top
View user's profile Send private message
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
Back to top
View user's profile Send private message
dongrave



Joined: 06 Mar 2014
Posts: 563

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.
Back to top
View user's profile Send private message
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
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic    dailysudoku.com Forum Index -> Daily Sudoku puzzles All times are GMT
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB © 2001, 2005 phpBB Group