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Subject: Re: Bitboards verses Offsets ?

Author: TEERAPONG TOVIRAT

Date: 19:31:45 10/16/04

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On October 16, 2004 at 10:58:17, Ron Peterson wrote:

>     I have seen some messeages about the use of bitboards for move generation.
>I use a offset approch for my move generator and I am pleased with the speed.  I
>have enclosed a copy of my "gen_white_knight" code.
>     My question is what type of speed increase wuold you expect to get in a
>move generator using bitboard?  50%?  100%?

Hi,

I think bitboards generate move faster especially capture moves. But it's slower
in makemove() and unmakemove() because it has to update a lot of data.
However, you can do a lot of tricks with bitboards in eval().  So,if you want to
compare the two methods, you 've to compare the performance not only speed of
movegen().

Regards,
Teerapong

• Re: Bitboards verses Offsets ? Stuart Cracraft 07:18:52 10/17/04
  • Re: Bitboards verses Offsets ? Sune Fischer 16:02:24 10/17/04
    • Re: Bitboards verses Offsets ? Reinhard Scharnagl 17:51:51 10/17/04
      • Re: Bitboards verses Offsets ? Sune Fischer 22:36:54 10/17/04
        • Re: Bitboards verses Offsets ? Uri Blass 03:27:38 10/19/04
  • Re: Bitboards verses Offsets ? Uri Blass 07:54:47 10/17/04

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