Author: Jeremiah Penery
Date: 10:38:08 01/27/00
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On January 27, 2000 at 10:06:04, Ernst A. Heinz wrote: >On January 27, 2000 at 02:45:39, Jeremiah Penery wrote: >> >> [...] >> >>Now, a corollary: Since the tree grows exponentially by a factor greater than >>two (I.e., the branching factor is higher than two, even with good pruning >>schemes.), ... > >Not by much, actually -- up to iteration depths of 12-13 plies, the >effective branching factor of state-of-the-art microcomputer chess >programs mostly lies between 2 and 2.5. Wow...I was thinking closer to 3 (or more). This does suspend my argument for some more ply. >With according increases in hash-table size, I am quite convinced >that this is sustainable for some iterations to come. It will be interesting to see. But at _some point_, the diminishing returns of speed will begin to take effect. Whether that's at ply 14 or 140 remains to be seen. :)
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