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Subject: Re: Estimated Human Playing Strength

Author: Thom Perry

Date: 15:29:16 11/01/01

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On November 01, 2001 at 15:27:23, J. C. Boco wrote:

>On November 01, 2001 at 13:15:14, John Merlino wrote:
>
>>On November 01, 2001 at 10:53:58, Kevin Stafford wrote:
>>
>>>I'd be willing to bet that chessmaster has poured the most time and resources
>>>into attempting to make their program accurate with repspect to its Elo ratings,
>>>but I doubt that even they are very accurate. I'm not sure how possible this is
>>>given that the program has to run on so many different levels of hardware. I'm
>>>afraid the only accurate way to determine your rating is to do it the hard way;
>>>earn it in a club or tournament by playing rated games.
>>>
>>>-Kevin
>>
>>I can clarify this a bit. Yes, we have poured quite a bit of time and resources
>>into the problem. And, yes, given all the different hardware and personality and
>>time control combinations, it is pretty much impossible to be reasonably
>>accurate with respect to, for example, a USCF rating.
>>
>>However, I can say with reasonable certainty that if you play enough (i.e. at
>>least 50-100) rated games on Chessmaster, at ONE SPECIFIC time control and on
>>the same machine, then your rating will probably be within 100 points of your
>>supposed USCF rating.
>>
>>That's just my educated opinion,
>>
>>jm
>
>Good point.  As long as you play the same time controls and don't upgrade your
>computer, the personalities will be stable.  It seems reasonable that even
>though a personality is rated 1500, if you got a faster processor it (the
>personality) would be stronger.

I guess it depends on how the program limits itself to reduce ELO playing
strength.  For example, if 1500 equates to a fixed search of ply = 3, then it
wouldn't matter which hardware were used.  But if 1500 = 30 seconds/move then,
yes, the hardware would be a factor and the rating would depend on the speed of
the CPU system.



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