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Subject: Re: Branche factor

Author: leonid

Date: 14:08:36 11/21/99

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On November 21, 1999 at 14:59:53, Bert van den Akker wrote:

>From the start position I get a branche  factor of about 14%
>
>This is in a 10 ply search from the start position.
>
>The branche factor is defined as:
>
>(total_number_of_moves_looked_at_in_a_node_before_cutoff /
>total_number_of_generates_moves) * 100
>
>Only in the normal search no (quiesence search not counted))
>
>In my case fo a 10 ply search
>branche factor = 14.2408293344493% (955856/6712081)
>
>Is this branch factor good or bad?
>
>
>
>BvdA


Your branching factor (such as you described it) is excellent! Would like to be
there.

I understood your factor as a number calculated when brute force search is
executed and no extensions were there.

Your number I consider to be good because of two reasons:

1) If there are no extensions and calculation done by brute force it is beter
that mine in around 7%.

2) If you logic do the extensions, it is just where it must to be compared with
few best games that I tryed for this purpose: Genius 4, Rebel 10 and Hiarcs
7.32.

All the best in your programming!

Leonid.




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