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Subject: Re: A crafty try with a crafty question

Author: Dann Corbit

Date: 17:04:08 06/06/00

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On June 06, 2000 at 19:19:19, Pete R. wrote:

>On June 06, 2000 at 16:00:17, Dann Corbit wrote:
>
>>I think this is a good example to show that "best moves" in EPD test positions
>>are only "best moves" for a certain depth unless a checkmate is found.
>
>I wouldn't go quite that far.  For example, after 1. e4 dxe4 in this position,
>black is completely lost (assuming best play by white of course).  This is not
>obvious to a human or a program, but with sufficient investigation becomes clear
>well before any checkmate will be seen.  If I can prove a win for white after
>1...Rh8 then odds are extremely high that 1.e4 really is best.  Certainly good
>enough in any case.  This involves a backsolving process which I did manually,
>essentially determining black's best attempt in each line until the best
>variation still ended in defeat.  Not checkmate, but only a matter of time
>until.  Just curious, does the CAP project do this sort of backsolving?  If this
>sort of investigation could be automated, then the CAP data would clearly "see"
>further than any program could expect to.

That's the basic idea behind the "connect the dots" project.
There have been 40 million positions or so (last count) analyzed at 2 seconds.
I don't have this data yet.




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