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Subject: Re: Gnu Chess and Iterative Deepening

Author: Sam Slutzky

Date: 22:15:16 10/28/00

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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.

I'm not really familiar with the code so I could be way off, but Idepth sounds
like the depth to search to (using iterative deepening, Idepth=1,2,3,etc.) while
depth is the actual number of plies remaining in the search.  The depth
remaining can change due to futility pruning or search extensions while Idepth
does not.

Sam



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