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Subject: A Feeling about Rybka architecture

Author: Fernando Villegas

Date: 06:14:07 01/12/06


Warning: not being a programmer, anything I could say here is just wild
speculation and has non intention to be taken seriously.


Rybjka, I guess, is different to others top programs because, like human mind,
has not only a certain stock of knowledge, but has the knowledge to know what
knowledge is irrelevant facing a problem and what can and MUST be left aside of
it.
 Probably this operates as a super module controlling which other, specific
modules of the source that must or could be left aside.
It is like what human brain does and certainly does in chess.
When you are attacking for a mate or under a mate attack, you does not make
positional calculations; you does not look for a better place for the rooks; you
does not think in a better ending. You just calculate possible combinations,
captures, checks. You know that positional knowledge is irrelevant in that
moment  and you leave it aside. You concentrate all brain power in that.
On the contrary, in a leveled position after the openning, when you at a glance
see that your king and the adversary king are well defended and that no side has
a massive concentration of pieces around them, then you leave aside mate attack
combinations, you does not lose time looking for such a thing, you concentrate
in positional features to see how to continue and get an edge.
After some games against Rybka I have the suspicion that Vas has developped
strongly  some kind of device to do that that work.
It could be a reason of his superior strategic handling.
Just my quarter of a penny
fernando



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