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 

subgroup question

 
Post new topic   Reply to topic    dailysudoku.com Forum Index -> Other puzzles
View previous topic :: View next topic  
Author Message
Dave



Joined: 17 Oct 2014
Posts: 1

PostPosted: Fri Oct 17, 2014 9:33 pm    Post subject: subgroup question Reply with quote

Hi, I've been struggling with this for several days. I am told that "the column contains a sub-group of 1,2,3 so 1,2,3 may be eliminated from the top 2 squares. Where and why is the subgroup? Thanks in advance...


Code:

 +-----+
 |268  |
 |     |
 +-----+
 |236  |
 |     |
 +-----+
 |23   |
 |     |
 +-----+
 |138  |
 |     |
 +-----+
 |  5  |
 |     |
 +-----+
 |  4  |
 |     |
 +-----+
 |  7  |
 |     |
 +-----+
 |128  |
 |     |
 +-----+
 |  9  |
 |     |
 +-----+

     
Back to top
View user's profile Send private message
keith



Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA

PostPosted: Sat Oct 18, 2014 3:28 pm    Post subject: Reply with quote

Dave,

I do not see it. The statement is true if 8 is not a candidate in R48, but I cannot say without seeing the whole grid.

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



Joined: 06 Mar 2014
Posts: 568

PostPosted: Sun Oct 19, 2014 3:42 pm    Post subject: Reply with quote

Did he actually use the term 'subgroup'? If so, then he must be referring to the 3 squares of this column that intersect with a box - which I'm guessing is why Keith mentioned seeing the rest of the grid - because in order to process a subgroup, you can't just look at the candidates for the column.
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic    dailysudoku.com Forum Index -> Other 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