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Subject: Re: Alpha/Beta adjustments via the hashtable or why Fritz 7 has messy PV's

Author: Ulrich Tuerke

Date: 08:01:56 12/03/01

On December 03, 2001 at 09:26:21, Gian-Carlo Pascutto wrote:

>On December 03, 2001 at 09:19:16, Ulrich Tuerke wrote:
>
>>I don't agree fully with you, Gian-Carlo.
>>
>>I think that getting unreliable main variations is a well known consequence of
>>any zero window search like for instance PVS or MTD.
>>The reason is that you will very often have moves in the PV which are just
>>sufficient to refute the preceeding move. In general you wan't have exact scores
>>neither exact variations.
>>
>>I don't think that this effect has to be attributed to the hashing algorithm.
>
>In PVS, the mainvariation should _not_ have been searched with
>a zero window, and should hence be reliable.

I think that you're right. My remarks apply to MTD only.
Uli
>
>--
>GCP

Re: Alpha/Beta adjustments via the hashtable or why Fritz 7 has messy PV's Tony Werten 00:55:21 12/04/01
- Re: Alpha/Beta adjustments via the hashtable or why Fritz 7 has messy PV's Ulrich Tuerke 03:27:41 12/04/01
  - Re: Alpha/Beta adjustments via the hashtable or why Fritz 7 has messy PV's Tony Werten 04:21:06 12/04/01
    - Re: Alpha/Beta adjustments via the hashtable or why Fritz 7 has messy PV's Ulrich Tuerke 05:38:52 12/04/01
      - Re: Alpha/Beta adjustments via the hashtable or why Fritz 7 has messy PV's Tony Werten 05:49:02 12/04/01
        
        Re: Alpha/Beta adjustments via the hashtable or why Fritz 7 has messy PV's Christophe Theron 23:58:04 12/05/01
        
        Re: Alpha/Beta adjustments via the hashtable or why Fritz 7 has messy PV's Tony Werten 02:46:52 12/07/01
        
        Re: Alpha/Beta adjustments via the hashtable or why Fritz 7 has messy PV's Christophe Theron 11:36:04 12/07/01

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