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Subject: Re: The need to unmake move

Author: Dieter Buerssner

Date: 10:11:49 08/20/03

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On August 20, 2003 at 13:05:17, Christophe Theron wrote:

>In any case I cannot imagine that restoring the hash key for the current
>position from memory could be slower than computing it again by undoing a
>sequence of XORs (at least 2) on a 64 bits integer...

... and while doing this, accessing memory anyway. Typically at least 2 64 bit
values for a normal move, unless one has a very big table with precalculated
xored values of from/to pairs.

Regards,
Dieter



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