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Subject: Re: DB will never play with REBEL, they simple are afraid no to do well

Author: blass uri

Date: 15:01:26 10/15/99

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On October 15, 1999 at 16:14:06, Ratko V Tomic wrote:

>>>Roughly
>>>estimating, there are perhaps 3-4 non-junk moves in a typical middlegame
>>>position and the effective branching factor may be 6-8 in such position.
>>
>>I've never seen such a high branching factor in any sort of typical position.
>>3-4 (even sometimes 2) is a much more typical branching factor for today's
>>programs.
>>
>
>The best you can do with the full width search (I was not counting extensions
>here, which are highly selective) is the square root of the number of legal
>moves

This is the best that you can do with no hash tables.
With hash tables you can do better.
For example you do not have to calculate 1.e4 e6 2.d4 and also 1.d4 e6 2.e4

Uri



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