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Subject: Re: Is the Depth directly proportional to the program's strength? (YES!)

Author: Dann Corbit

Date: 15:23:22 02/06/02

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On February 06, 2002 at 18:03:41, Sune Fischer wrote:
[snip]
>Suppose you have millions of given random test positions in which you *know* the
>best move(s).
>Now run tests to see how often a 1-ply search will find the correct move, and
>how often a 2-ply search will find the correct move etc.
>Line up all these percentiles, and you will probably get something like this:
>
>1-ply search: 40% correct moves
>2-ply ......: 55% correct moves
>3-ply ......: 65% correct moves
>4-ply ......: 72% correct moves
>etc...
>
>The thing is, that the percentiles _must_ converge towards 100, so it will need
>to slow down, there may only be 2% difference between a 12 and 13 ply search,
>which is why it is really hard to measure anything.

Unless it is a forced checkmate, I do not believe any evaluation that says some
move is the best.  I only think it might be.



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