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Dave
Joined: 17 Oct 2014
Posts: 1
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 Posted: Fri Oct 17, 2014 9:33 pm Post subject: subgroup question |
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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...
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keith
Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA
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| Posted: Sat Oct 18, 2014 3:28 pm Post subject: |
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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 |
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dongrave
Joined: 06 Mar 2014
Posts: 568
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| Posted: Sun Oct 19, 2014 3:42 pm Post subject: |
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| 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. |
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