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Subject: Re: attacking bitboards?

Author: Robert Hyatt

Date: 08:23:30 10/19/99

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On October 19, 1999 at 07:45:33, Antonio Dieguez wrote:

>I have read somewhere "atacking bitboards"
>What are exactly them? it has for example the data about all squares atacked by
>white and black? but how are they updated? it looks very complicated.
>
>
>me.


It is somewhat complicated, but doesn't have to be computationally expensive.
IE for non-sliding pieces, you can simply look up in a table to find which
squares a piece on "SQ" attacks.  For sliding pieces it is more complicated,
but rotated bitmaps turns this into a series of table lookups as well..



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