| Author | 
	Message | 
  
  
	   Topic: getting more and more interested ( and confused) | 
  
  
	John Ruddock 
	   
	  Replies: 15 
	  Views: 110173 
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	 Forum: 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: 110173 
	 | 
	 Forum: 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: 58538 
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	 Forum: 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: 44191 
	 | 
	 Forum: 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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