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Subject: Re: Who is the real NPS champion?

Author: Tina Long

Date: 22:47:58 11/10/99

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On November 10, 1999 at 00:16:39, Dann Corbit wrote:


>>Chessmaster show 2 numbers and I understand that the first number is the brute
>>force depth and the second number is the selective search depth.
>>The default personality(tested by ssdf) has the parameter ss=6
>>
>>If I see numbers like 4/10 the meaning(if I understand right) is that it looks
>>at everything at depth 4,almost everything at depth 10 and does also extensions
>>after it.
>
>That just means (to me) that they are not reporting the depth in plies but
>something of their own measure.  I also think that there can be two ply
>measures:
>
>0.  Actual depth in plies for exhaustive search (less pruning, nullmove...)
>1.  Speculative plies (capture extensions, check extensions, etc...)
>
>If we have a clear indication for both of these measures then I think that
>programs would agree on the results most of the time.  If someone has something
>else and they call it a ply you cannot make any predictions because of that.

I asked about these numbers in CM6k (and Junior)some months ago.
Shep Answered as Blass stated above and added the example that to me meant:

CM6K saying 4/10 (plus lets guess the furthest extension is 40)
is the same as Fritz or Hiarcs saying 10/40
(Junior calls this 20) (I'm 63% sure on this Junior one)

Cheers,



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