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 

Oct 20 VH

 
Post new topic   Reply to topic    dailysudoku.com Forum Index -> Daily Sudoku puzzles
View previous topic :: View next topic  
Author Message
roaa



Joined: 18 Apr 2009
Posts: 112
Location: Sweden

PostPosted: Tue Oct 20, 2015 9:03 am    Post subject: Oct 20 VH Reply with quote

At least two XY-wings 349 solves it.
Back to top
View user's profile Send private message
hughwill



Joined: 05 Apr 2010
Posts: 424
Location: Birmingham UK

PostPosted: Tue Oct 20, 2015 9:23 am    Post subject: Re: Oct 20 VH Reply with quote

Code:

+--------+-------------+-----------+
| 4 5  8 | 2   6   39  | 1  39  7  |
| 6 1  3 | 78  78  49  | 5  2   49 |
| 9 7  2 | 1   34  5   | 34 6   8  |
+--------+-------------+-----------+
| 7 2  1 | 389 389 6   | 34 349 5  |
| 5 3  9 | 47  47  2   | 8  1   6  |
| 8 6  4 | 5   39  1   | 2  7   39 |
+--------+-------------+-----------+
| 3 4  7 | 6   1   8   | 9  5   2  |
| 2 89 6 | 349 5   349 | 7  348 1  |
| 1 89 5 | 349 2   7   | 6  348 34 |
+--------+-------------+-----------+

Play this puzzle online at the Daily Sudoku site

roaa wrote:
At least two XY-wings 349 solves it.


Three, if you count the unusual combo in boxes 3 and 6 as two.
Otherwise, no more interesting solutions...........?

Hugh
Back to top
View user's profile Send private message
Marty R.



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

PostPosted: Tue Oct 20, 2015 3:53 pm    Post subject: Reply with quote

Quote:
Otherwise, no more interesting solutions...........?


Some of us, including yours truly, like to solve these using only the standard VH moves, i.e. X- ,XY- and XYZ-wings.

However, departing from those moves, the DP 48-49-89 might qualify as interesting. To break up the DP, there needs to be a 3 in either r89c4 or r89c8. These two yield a common outcome.
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