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Subject: Re: About False Fail Highs, professionals, and MTD searches

Author: Alejandro Dubrovsky

Date: 04:07:06 04/13/02

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On April 12, 2002 at 15:08:51, Gian-Carlo Pascutto wrote:

>
>Why don't MTD(n,f) searchers have trouble with this? If the
>PVS can have a fail high/fail low sequence, couldn't this
>happen with MTD(n,f) as well? As far as I see, the result
>would be that the MTD quits (it has converged, after all)
>and ends up with the move that corresponds to the false-fail
>high one in PVS. These are often blunders. Why doesn't this
>happen?

well, it happens to small potato, and the search is very stable (only
instability introduced is because of the hashtable).  Blunders are somewhat
common.

Alejandro.



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