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Subject: Re: Bitboards {July 01, 2001 discussion}

Author: Robert Hyatt

Date: 13:09:16 02/04/04

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On February 04, 2004 at 15:50:20, Dann Corbit wrote:

>On February 04, 2004 at 14:35:10, Dann Corbit wrote:
>
>>On February 04, 2004 at 14:01:06, Reinhard Scharnagl wrote:
>>
>>>Is there anything known as "inverted bitboard" or "reversed bitboard"?
>>>
>>>It would be good to know, because this could be a name for some parts of my
>>>approach.
>>
>>Yes.  A fellow had a web page a while back and thought that his reversed
>>bitboards would make the fastest engine in the world.
>>
>>Actually, reading his page showed some interesting ideas, but I don't think he
>>ever got his chess engine off the ground.
>>
>>It was perhaps 2 years ago.
>
>http://chessprogramming.org/cccsearch/ccc.php?find_thread=177758


If I recall correctly, his claim was based on the same false premise that
Vincent relies on all the time, namely that if your move generator is slow, your
engine sucks, if it is fast, your engine is wonderful.  It is pretty easy to
produce a ridiculously fast move generation speed, but you _still_ have to add
in all the other stuff (search, evaluation, updating the chess board, hashing,
etc) which turns out to dwarf the computation done in move generation...




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