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

Author: Robert Hyatt

Date: 11:38:43 11/19/02

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On November 19, 2002 at 14:33:53, Gian-Carlo Pascutto wrote:

>On November 19, 2002 at 14:27:26, Robert Hyatt wrote:
>
>>Doesn't matter to me.  I use them.  I am happy with them.  Frans apparently
>>liked them enough to convert to them.
>
>But it seems none of the other pro's did, and we don't even know
>what Frans does exactly.
>
>>By comparing the speed I generate moves at compared to 0x88, for example?
>>All the "good generators" are within a factor of two or so of each other,
>>depending
>>on what they do in Make/Unmake...
>
>A factor 2? I don't know about you, but I think a factor 2 is _big_.

I do too...  but what does a move generator do?  Some update incremental stuff
(we did in Cray Blitz).  Some don't.  So they have to compute that stuff
somewhere
else.

I don't see how to "prove" this without re-writing my program without bitmaps,
which I
am not willing to do.  Otherwise, comparing two programs is not apples to
apples, ever...

>
>>>Doesn't say a thing. The programs are much more different than just
>>>bitboard vs nonbitboard.
>>
>>
>>That's simple hand-waving
>
>_I_ am hand-waving???
>
>I seems pointless for us to discuss this.

I think you are right.


>
>--
>GCP



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