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Subject: Re: Problem: knowing nothing about a position = score 0??

Author: Ingo Lindam

Date: 14:51:59 10/27/02

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On October 27, 2002 at 17:25:58, José Carlos wrote:

> I find your idea very interesting. I had never though it that way. All in
> all, it's very rare that the program knows nothing about a position. Most
> probably it applies wrong knowledge, but it always applies knowledge:
> material,

Well, let's assume material to be equal... a 0 seems fair to evaluate this.

> pawn structure

very unknown pawn structure... might be good, might be worse.. so another 0?

>, strong / weak squares,

unfortunately there are no strong squares as I see it... and not really weak
squares...not as I define weak squars... so another 0?

> open lines,

oh...as well...unfortunately..also no open lines in this position.. this should
cause a 0... or even worse...? But my opponent has exactly the same... So even
if I can judge this...is should be another 0!

> king safety,

is it save? not a really save king...but not really worse... more save than
worse... as well as my opponent ok...completely different position of the
king...but nearly same score... So another 0 or not more than an epsilon here.
Ok?

> piece mobility.

As far as I can judge it... piece mobility must be nearly as mobile as my
opponent... Cant say much about it, but not worse than -epsilon... or another 0?

> These things are always there.

Yes, they should be there... but I might have very very less in hand to judge
about position. Current position fits less here and completely not there...

> It could be that they don't matter at all in
> certain
> position, but then the program can do nothing to know it... or am I missing
> something?

I ask me the same question: Do I miss here anything?

I will get always a score for an position... but when the knowledge I use fits
not well to a position means that that score is probable near to 0?

If so...and just if so (!!) I think this could be worse...because I would
probable assume my opponent to judge it the same way... giving it also a score
near to 0... and so I optimize towords a position I really know nothing about.

I would expect it better to judge me a position as bad...as less I know about
it...and as better for the opponent to avoid me to play towards such a position.

I could imagine that something like this is already be done in atleast some
programs, isn't it?

Ingo


>  José C.



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