On Wed, 2007-02-28 at 09:01 +0100, Heikki Levanto wrote:
> >   2.  I use a hybrid form of all-moves-as-first and others have
> >       reported no improvement.   The behavior I get is that it
> >       plays much stronger at low simulations and in extensive
> >       testing I could not find a high enough level for the version
> >       that does not do all-as-first to make it play as strongly.
> >       So for me there is no reason whatsoever to stop using 
> >       all-as-first, even at ridiculous levels. 
> 
> I have never really understood the idea in all-in-first. That seems to
> fly in the face of the common sense idea that the order of moves is
> important. But perhaps I have got it wrong in my mind. I will have to
> study more.

The idea is that in a random simulation, if all moves have equal chance
of being selected,  there is little difference WHEN you play a move.  

Also in GO, it's usually the case that if a move is good for you, it's
also good for the opponent,  so you get a situation where the simulation
simply rewards the player who happens to get there first - which is 
usually an appropriate distinction.

- Don


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