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Subject: Re: Some facts about Deep Thought / Deep Blue

Author: Uri Blass

Date: 11:35:37 08/29/01

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On August 29, 2001 at 11:37:17, Miguel A. Ballicora wrote:

>On August 29, 2001 at 11:22:14, Uri Blass wrote:
>
>>On August 29, 2001 at 09:33:08, Robert Hyatt wrote:
>>
>>>On August 29, 2001 at 08:29:28, Erkki Malkamaki wrote:
>>>
>>>
>>>While the information is both good, and old, it won't help the argument.
>>>A few are not going to let some facts get in their way when they want to
>>>bash the machine or the "team" of developers...
>>>
>>>:(
>>
>>The only facts that can convince me is an anlaysis of the logfiles.
>>
>>Can you show me one main line of deeper blue
>>that the best chess programs need many hours to get?
>>
>>My analysis suggest that deeper blue is 2-3 times faster than
>>Deep Fritz pIII800 in finding some main lines.
>>
>>I am sure that if we analyze every position
>>that Deeper blue pondered for some hours on fast PC we can find
>>more positions when top programs find main lines that
>>begin in the same moves as the main line of deeper blue.
>>
>>The interesting question is what is the speed ratio in these cases
>>If the speed ratio is the same as the speed ratio that I found then
>>it means that deeper blue is not strong.
>>
>>If in most of the cases when top programs find similiar main lines
>>the speed ratio is at least 100 then it means that deeper blue
>>was probably stronger then my impression.
>>
>>Unfortunately I found only one volunteer to help me to
>>analyze the positions that deeper blue pondered and
>>I am not going to use more than 20 hours of computer time
>>per week to analyze.
>>
>>Uri
>
>These threads generally I read them a little but then I give up.
>Just because I do not understand the point of the discussion.
>So, this is the first time I will put my nose where I shouldn't
>In this case, what is your point or your hypothesis? is that Deep Blue was not
>good? (I cannot believe anybody will mean that but apparently some do, I guess)
>is that Deep Blue was as strong as todays engines in current hardware? what is
>it specifically?
>
>Regards,
>Miguel

The question is if deeper blue was stronger or weaker than the best commercial
of today.

I did not say that Deeper blue was weak and I believe it was clearly at GM
strength and probably it's rating against humans could be at least 2700 at that
time.

I believe that the level of humans today is higher because they train more with
computers so I suspect sure that 2700 today is better than 2700 at the time that
deeper blue played kasparov.

Uri



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