Computer Chess Club Archives




Subject: Re: Doesn't appear to work for me (full data)

Author: Robert Hyatt

Date: 07:48:18 11/22/02

Go up one level in this thread

On November 22, 2002 at 06:35:56, Gian-Carlo Pascutto wrote:

>On November 21, 2002 at 20:01:36, Robert Hyatt wrote:
>>You said it was completely useless to you.  I don't see how since he didn't add
>>or subtract anything to change his raw search speed.  Meaning fixed depth is a
>>reasonable metric to measure and report.
>But what does it say? Nothing, since the pruning rules changed.
>Moreover, depending on the rest of the program, such a change _can_
>change raw search speed in ways that are not always immediately obvious.

It says that R=3 + verification produces smaller trees than R=2 normal search,
which means
that R=3 + verification is faster since it is the same program doing the tests.
And R=3 + verification solved more test positions.

Seems clear to me that for his program, it is a win in terms of both speed and
accuracy.  Whether
it works for others is another issue.  It isn't uncommon to see something work
here and not work

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