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Subject: Re: bitboard question

Author: John Coffey

Date: 08:34:19 01/12/99

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On January 12, 1999 at 11:10:21, KyoJin Kim wrote:

>How much will it be faster using bitboard than without using bitboard?
>
>Thanks.


Speed is a hard concept to talk about.  I am no expert, but bitboards might
have more over-head while at the same time they simplify evaluation of the
position, which may save you time in evaluating.   Although I don't fully
understand it, I am told the bitboards can also help in move ordering by
looking at captures first, and the improved move ordering reduces the number
of positions looked at.

My idea of a chess algorithm was not to use bitboards because they do not
provide me with all the information that I want.  Instead I was going to
keep track of a great deal of information each time a piece moved - this
approach might be slow but might also help my evalution, move ordering, and
pruning.  I can't say that it will work, because it might be months before I
can put these ideas into practice.  But I have started on the user interface.

John Coffey



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