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Subject: Trivial alfa-beta question

Author: Jouni Uski

Date: 10:30:09 02/18/06


The book "Schach am PC" from 1995 says, that alfa-beta reduces evaluated
positions with 5 * sqrt (positions). Also some example values are given
like:

         positions      alfa-beta positions
8 ply    6.5e12         13e6
9 ply    2.6e14         80e6

Are these values outdated? Has there been significant improvements later? I
think today's engines get x plys with much smaller nodes.

Jouni



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