Author: José de Jesús García Ruvalcaba
Date: 15:00:39 12/16/98
Go up one level in this thread
On December 16, 1998 at 16:42:57, Komputer Korner wrote:
>On December 16, 1998 at 12:50:36, José de Jesús García Ruvalcaba wrote:
>
>>On December 15, 1998 at 02:08:19, Steven Juchnowski wrote:
>>
>>>Is there an explaination as to why the relative strength
>>>of a Chessmaster personality should vary under different time
>>>controls?
>>>
>>>Chessmaster 6555 appears to be stronger than Chessmaster 6000-4
>>>under blitz conditions, why is this not necessarily true under longer
>>>time controls. After all both personaliies are using the same chess engine.
>>>
>>>Regards to all you Chessmaster reseachers.
>>>Steven
>>
>> That can happen with any two engines. If you slow down a current >>computer by a
>>factor of 1000 and play a match between a good current program on it against a
>>good old program in and old computer (from when the computers were 1000 times
>>slower) at standard time control; I am sure the old program will win, because >>it
>>was optimized to get the most of the available resources at that time (which
>>were scarce).
>> On the other hand, if somehow you speed up the old machine 1000 times >>and play
>>the match, then the new program in the new machine will win. Slowing down or
>>speeding up are equivalent to changing the time control, and now it is clear
>>that different engines are best at different time controls.
>
>At short time controls where hash tables are involved this is not true. Your
>time handicapping is thrown out of kilter by instant hash reads. The KK Kup is
>fair because even though it has time handicapping the hash tables get filled up
>quickly with the extremely long time controls and the hash reads are a very
>minor factor.
>--
>Komputer Korner
I did not mean time handicapping as is usually understood (i.e. giving
more time to one player). I meant hypothetical machines, one which is like a
modern PC but many times slower for one example, other one which is like an old
vacuum tubes computer but many times faster for the other.
The difference is in the pondering time: giving more time for one player
gives also more time to the opponent to ponder.
Also, I meant standard time controls, say 40 moves in two hours. Correct
me if I am wrong, I understand that you think that a modern program on a modern
machine at a very fast time control would play better than an old program on an
old machine at a slow time control. Unfortunately it is very difficult to check
this out: it requires an old computer with a chess program, and there is the
technical difficulty with the pondering time.
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