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Subject: Re: Rotated Bitboards ???

Author: James Long

Date: 09:23:11 02/20/99

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On February 19, 1999 at 23:52:52, Greg Lazarou wrote:

>I've heard quite a bit about bitboards in posts here and I'm trying to figure
>out what they are and why they increase performance so much? Are there any links
>to go and read an article about them?
>
>I think they are a way to represent the board but why rotate them and where is
>the big benefit? Right now I basically use a variation on the basic array of 64
>integers to represent the board (ala TSCP) and I get about 30K nodes/sec on a
>Pentium 200. But I see discussions of 100-200+ K nodes/sec on similar hardware
>with bitboards!
>
>Thanks in advance for any hints/tips...
>
>Greg

Try http://home.fda.net/~wzrdking/chessprg.htm
Good luck. :-)

--
James



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