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Subject: search speed

Author: Stuart Cracraft

Date: 13:36:19 06/25/04


Just a note that I got my hashing working in a
quick hack program I've put together for other
reasons and it was nasty even though I've been
through it over and over through the decades.
I empathize with other hashers who have felt or
are feeling hashed.

It is well worth it. A typical 8 ply search early
in the game might reduce 50%+ in total nodes searched
and 50%+ in total time.

These are dwarfed by null move's effect though in
the same positions (90% and 90%).

So my question is, these are well-known methods to
substantially reduce the number of nodes and amount
of time for most searches -- I wonder if there is
anything else that is as large and as comparable
at these large 50%/90% types of reductions.

Stuart



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