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 

Another "technique" added to V Hard?

 
Post new topic   Reply to topic    dailysudoku.com Forum Index -> General discussion
View previous topic :: View next topic  
Author Message
George Woods



Joined: 28 Mar 2006
Posts: 304
Location: Dorset UK
PostPosted: Fri Oct 13, 2006 9:19 am    Post subject: Another "technique" added to V Hard? Reply with quote
Up to now I have assumed a V Hard at the crunch point would probably be sorted by an X wing. Today 13th Oct I used a DR?(deadly rectangle- answer must be unique). So maybe it can be solved by an X wing that I didn't see, or DR are now part of the repetoire!
Any comments?
Back to top
View user's profile Send private message
David Bryant



Joined: 29 Jul 2005
Posts: 559
Location: Denver, Colorado
PostPosted: Fri Oct 13, 2006 11:04 am    Post subject: I found an X-Wing Reply with quote
Hi, George!

We'll have to ask SamGJ to weigh in here about adding new techniques. I don't think you need to use anything beyond X-Wings to solve his puzzles, yet, but I'm not certain.

On the puzzle for 13 October, basic techniques brought me here.
Code:
*--------------------------------------------------------------------*
| 48     7      3      | 5      12468  246    | 124    9      1246   |
| 9      1      5      | 46     246    7      | 3      8      246    |
| 48     6      2      | 1348   9      34     | 14     457    1457   |
|----------------------+----------------------+----------------------|
| 2      9      1      | 7      3456   3456   | 8      345    345    |
| 7      4      8      | 9      235    235    | 12     6      1235   |
| 35     35     6      | 48     248    1      | 7      24     9      |
|----------------------+----------------------+----------------------|
| 356    2      4      | 36     7      356    | 9      1      8      |
| 16     8      7      | 2      16     9      | 5      34     34     |
| 135    35     9      | 134    1345   8      | 6      27     27     |
*--------------------------------------------------------------------*

I guess the "UR" you were talking about is in r69c12, where you must have a "1" at r9c1 to avoid the "deadly pattern".

There's an X-Wing (on "4") in r13c47 that will also crack this puzzle open. dcb
Back to top
View user's profile Send private message Send e-mail Visit poster's website
Display posts from previous:   
Post new topic   Reply to topic    dailysudoku.com Forum Index -> General discussion 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