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Subject: A new kind of ply count

Author: Dann Corbit

Date: 14:30:00 06/17/99


We all know that move generators can tell us how many legal moves exist in the
first <n> ply if written correctly.  Here is a new kind of question about it:
How many "distinct/unique" positions are there in the first n ply?
Some answers:

Ply:  Number:
----  -------
0     1
1     20
2     400
3     7,602
4     101,236

I'm doing ply 5 right now.



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