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Subject: Re: impact of early queen exchange on performance

Author: Mike S.

Date: 15:10:27 10/09/02

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On October 09, 2002 at 17:38:20, Ricardo Gibert wrote:

>(...)
>>The figures *themselves* are the information (and don't require
>>interpretations/assumptions at first). IOW, factual like: Junior 7 scored 55% in
>>that databse in total, and 41% when queens were exchanged early.
>>
>>So unless somebody finds another large game collection which gives much
>>different figures, I draw the conclusion that Junior 7 achieves a much worse
>>score without queens, at least with white (58%/25%). Isn't that reasonable?
>
>
>No, because it does not explain how color can be a significant variable. It
>shouldn't be, but since it seems to be, you can't trust the conclusion.
>Something funny is going on that needs to be explained before you can get
>anywhere with this.

Of course colour is a significant variable. Aren't you familiar with the
difference of wins/losses depending on the colour? For example, White usually
scores ~55% (not 50%). Also, White is much more often in the role of the
attacker (trying to gain/keep the initiative), so it's absolutely no surprise
for me when Black scores better after an early queen exchange: The defense is
easier, because white can't produce such dangerous threats anymore.

For the same reason it's not surprising when White's score drops without queens.
Really interesting are cases like Tiger with a *better* White score after the
eQE... but it's good endgame abilities are known. So it's the explanation which
is most likely (although not proven, game by game...).

(But I'm sure you're still not convinced yet. :o)

Regards,
M.Scheidl



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