"Sacha" wrote after "Bob
Hobden"wrote:

Quite, my wife won't attempt Sudoku, which I love, because it's numbers
but
I'm certain if I replaced the numbers with letters ie, a to i (it would
work
just as well) she would not be put off at all. I wonder what it is about
numbers that puts people off?

In my case, partly bad teaching and partly not natural aptitude. I cannot
fathom out what Sudoku is about, let alone do it! But I love doing - or
at
least, attempting - crosswords.

If you can do a crossword you can do Sudoku, it's easier, you don't have to
know anything to do it, it's just logic and reasoning that solves them.
The numbers 1 to 9 are simply convenient symbols they have no mathematical
significance in this context and could easily be nine different animals or
nine different letters or nine different cars...... etc.
http://www.sudoku.com/

--
Regards
Bob H
17mls W. of London.UK