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Subject: Re: Differences between 0x88 ,10x12 and Bitboards!?

Author: Daniel Clausen

Date: 12:08:13 11/19/02

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On November 19, 2002 at 14:04:42, Vincent Diepeveen wrote:


>i have posted some months ago and another few months before that loads
>of examples with regard to evaluation.
>If you browse some in the search you will find it.

I'm aware of that. But I can't remember that you scientifically proved that
"bitboards are worse to implement a good eval than 0x88". (or any other board

Actually it would be a rather stupid claim to make because there's really no way
you could prove that. (on the other hand, religions make use of the fact that
their claims are not provable/disprovable ;)

Just posting some examples where 0x88 is better than <another board
representation> is not a proof. In fact I'd be surprised if _your_ evaluation
would be easier/faster to implement with bitboards than with 0x88, as it would
mainly show that you didn't make use of the advantages of your chosen board

While there are clearly inferior board-representations (like storing the board
internally as a BMP-file ;), generally the art is to find the advantages of the
chosen representation and make use of them. (that's not only true for chessboard
representation but for many other things)


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