Author: Tom Kerrigan
Date: 09:19:45 04/13/00
Go up one level in this thread
On April 13, 2000 at 11:11:24, KarinsDad wrote: >On April 12, 2000 at 22:59:22, Tom Kerrigan wrote: > >>In my experience, here's what happens: >> >>You search the initial position to 10 ply and play e4. >> >>Because of that search, there is a "9 ply" hash table entry for the resulting >>position. >> >>So when you start the next search, you do a 1 ply search(). It finds the hash >>table entry, sees that 9 > 1, and returns immediately. Then you do a 2 ply >>search(), same thing happens. Until you do a 9 ply search. >> >>So it's not necessary to keep track of which entries are still "good" because >>you start the search up again where you left off. >> >>-Tom > >Ok, maybe I am just confused here. I thought that if you found an entry in the >"9 ply" portion while searching the 10 ply off the initial position, that entry >may or may not get overwritten due to a hash table collision (hence, the need >for the counter). Now I'm confused. :) Are you talking about doing a search A and during that search, it overwrites a hash entry made by the same search (A)? -Tom
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