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Subject: Re: Gnu Chess and Iterative Deepening

Author: Dan Newman

Date: 01:55:39 10/29/00

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On October 28, 2000 at 15:13:01, Simon Waters wrote:

>Anyone care to hazard a guess at what gnuchess 5 is trying to do with the Idepth
>variable and the DEPTH macro?
>
>I have read the source a few times, and pondered Aske's discussing of search
>algorithmns... but this leaves me cold.
>
>I spy a bit of systems decay I suspect, but I'd appreciate a few pointers.

Gnuchess 5 is using the fractional ply trick.  The DEPTH macro is
the number of fractional plies in one full ply, and Idepth is just
the nominal depth of the search iteration (in fractional plies).

-Dan.



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