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Subject: Hash move extension

Author: Sergei S. Markoff

Date: 21:51:17 09/25/04


Some ideas on hash move extensions.
The idea was invented independently by Shpeer, Rybinkin ("Mirage") and me. In
most cases this is a good idea to extend TT moves to improve search stability.
But what scheme will be best for doing it?

In ST the method is a little curious.

TT_extesion_amount=INCPLY/RootDepth (in plies).
while(TT_extesion_amount*RootDepth<INCPLY) TT_extesion_amount++;

Anyway it improves play of ST.

I need your results to compare.



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