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Subject: Re: Internal Iterative Deepening

Author: Bas Hamstra

Date: 06:07:48 07/25/02

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On July 25, 2002 at 00:14:19, Robert Hyatt wrote:

>On July 24, 2002 at 22:00:04, Matthew McKnight wrote:
>
>>IID seems to give me a lower node count at some plies, but a higher one at
>>others.  Is this just because IID doesn't give a huge speedup or does it mean
>>that I am implementing it incorrectly?
>>
>>Matt
>
>
>IID is not a huge thing.  It mainly helps where you fail high but can't get
>a real score so that the next iteration, you end up with no hash moves for
>the PV search...  IID will supply good moves.

All you get is a reasonable move from a D-2 search. Why not store the original
hashmove in stead? So when you normally store a UPPER score, in stead of saving
no move at all, you save the original hashmove? I don't see why IID would
provide a better move than that...

Best regards,
Bas.







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