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Subject: Re: Hiarcs Hash-Table Retention?

Author: Mark Young

Date: 16:51:09 06/24/99

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On June 24, 1999 at 19:11:42, Melvin S. Schwartz wrote:

>
>On June 24, 1999 at 13:37:54, Albert Silver wrote:
>
>>On June 24, 1999 at 13:18:03, Melvin S. Schwartz wrote:
>>
>>>
>>>I have been playing games at 40/2 against Hiarcs 7.32 optimized for the best
>>>settings. I have noticed that on numerous occasions even when I played the move
>>>expected by Hiarcs, the program took around 10 minutes to respond. I find it
>>>difficult to understand why it should have taken Hiarcs that long to respond to
>>>a move it expected.
>>>
>>>How do we really know that Hiarcs 7.32 retains the hash-tables between moves? Do
>>>you see the hash-table info on the screen?
>>
>>No, but it does retain the hash-tables. My problem with it is that if i go back
>>a move it will play it instantly without clearing the hash-tables. Ex: I submit
>>a position for it to ponder. It produces the move. Fine, now suppose I wanted to
>>time it properly. If I let it play it's planned move (which it took 5 minutes to
>>choose) and then go back and ask it to think again, the move will appear
>>immediately as it's prime candidate. In order to clear the hash tables I have to
>>have it compute a different position and then come back.
>
>Hello Albert,
>
>You are absolutely certain that Hiarcs 7.32 retains the hash-tables between
>moves? I have played against it at 40/2 and I have experimented as you state
>above by taking back a move and forcing Hiarcs to redo the move; however, I did
>not get an instantaneous response as apparently you did. It still took Hiarcs a
>fair amount of time to re-make the move. I wonder what time control you were
>experimenting with, and if your result was possibly due to a faster time
>control?>

It does retain the hash tables, I took a position where it took about 5 min to
find the correct move about 10 plys. Then researched that position, it went to
10 ply and found the correct move in 0 secs.

>
>Regards,
>Mel
>
>>                             Albert Silver
>>
>>> Does it say that in the manual on the
>>>CD? The manual on the CD is the manual for Fritz 5.32. Are you certain this is
>>>in fact Hiarcs 7.32?
>>>
>>>
>>>As someone well-respected here often says: "Show me proof".
>>>
>>>Furthermore, all this talk about tablebases makes we wonder. I placed the CD
>>>under my breakfast table and it only supported one leg! I would need 3 more
>>>Hiarcs CD's to have full capability to support my breakfast table. Therefore, I
>>>conclude that Hiarcs tablebases are not only incomplete, but also not very
>>>practical.
>>>
>>>Any comments to the above will be given the utmost consideration. Please - only
>>>well-informed sources should reply. I will respect all opinions which disagree
>>>with mine even though they are wrong.
>>>
>>>Regards,
>>>Mel



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