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18 jan Hard

 
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George Woods



Joined: 28 Mar 2006
Posts: 304
Location: Dorset UK
PostPosted: Sun Jan 18, 2015 1:47 pm    Post subject: 18 jan Hard Reply with quote
I have just done a couple of "Brainbasher vh" that both seemed to need "Deadly rectangles" to solve them - A technique that I hate because it assumes a valid unique solution.

I was amazed to find that todays (Daily sudoku) hard had two such DRS (non essentilal of course) but tempting!
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keith



Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA
PostPosted: Mon Jan 19, 2015 9:31 am    Post subject: Re: 18 jan Hard Reply with quote
George Woods wrote:
I have just done a couple of "Brainbasher vh" that both seemed to need "Deadly rectangles" to solve them - A technique that I hate because it assumes a valid unique solution.

I was amazed to find that todays (Daily sudoku) hard had two such DRS (non essentilal of course) but tempting!

Why, George?

You like to solve sudokus that do not have a valid unique solution? Razz

Keith
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