A challenge from the Mensa Puzzle Calendar

[Nicolas]

Mark McEahern wrote:
> [Marco Mariani]
> 
>>BTW, i've tried with permutations but it's even slower, having to loop
>>10! times...
> 
> 
> Um, it's a puzzle.  Who cares how slow it is?  Have a beer, kick back,
> relax, and let the bloody thing churn.
> 
> For what it's worth, here's a generalized solution that lets you plug in
> somewhat arbitrary equations with single or multiple fixed digits (i.e.,
> like '7' in this one):

More general wins ?

	http://www.logilab.org/python-logic/
	http://www.logilab.org/python-logic/constraint.html
	http://www.logilab.org/python-logic/documentation.html
	ftp://ftp.logilab.org/pub/constraint/

I won ;-)

But now you'll complain that puzzles are not as fun anymore...

-- 
Nicolas Chauvat