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  Topic: getting more and more interested ( and confused)
John Ruddock

Replies: 15
Views: 27939

PostForum: Other puzzles   Posted: Thu Nov 03, 2005 9:26 pm   Subject: Re: 17-clue puzzles
See also:

http://en.wikipedia.org/wiki/Mathematics_of_Sudoku

This is not the same as the link in my other post, which has a section "Mathematics of Sudoku".

There are nearly 25,000 cataloged soulti ...
  Topic: getting more and more interested ( and confused)
John Ruddock

Replies: 15
Views: 27939

PostForum: Other puzzles   Posted: Fri Oct 28, 2005 12:22 am   Subject: getting more and more interested ( and confused)
Hi everybody,

I can't seem to work out how to reply with the received response/quote in a box, so I'm starting again from scratch. So my reply to DCB's exquisite insights and my subsequent questions ...
  Topic: More mathematics - possibly esoteric
John Ruddock

Replies: 5
Views: 13896

PostForum: Other puzzles   Posted: Tue Oct 25, 2005 7:37 pm   Subject: More mathematics - possibly esoteric
I have always been interested in maths, though not a brilliant practitioner. I did study maths for scientists in my 1st year at university, but have never studied number theory or advanced combinatori ...
  Topic: mathematics of Su Doku
John Ruddock

Replies: 2
Views: 15933

PostForum: Test   Posted: Wed Oct 19, 2005 7:57 pm   Subject: mathematics of Su Doku
I have read recently that there are 6 x 10 to the power 21 permutations of the Su Doku grid. Is this really right? I don't regard number transpositions as yielding a different puzzle i.e swapping a 1 ...
 
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