Computer Chess Club Archives




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

Author: Russell Reagan

Date: 11:53:45 11/19/02

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

>A factor 2? I don't know about you, but I think a factor 2 is _big_.

Surely a factor of two in move generation is not that significant. Even if you
had an effective branching factor of 2 (which no one has consistently) you still
wouldn't gain even an extra ply.

And a 2x speedup in move generation or make/unmake doesn't indicate that the
engine is any faster at all. It might do things elsewhere that someone else does
in make/unmake for example.

A factor of 2 in move generation or make/unmake says that they're in the same
ballpark to me.

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