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Subject: Re: When to RecordHash()?

Author: Josť Carlos

Date: 17:44:56 12/25/01

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On December 25, 2001 at 20:21:49, Sune Fischer wrote:

>I'm sitting here with an implementation problem, I can think of a few ways to
>solve it, but perhaps there is an even better one.
>The problem is I can't always get the best move in a position when searching, I
>need a beta cutoff or an improvement in the alpha value. So it isn't save for me
>to assume there is killer in all recorded hash entries, and if I only
>recordhash() when I _can_ put a killer in, then I miss out on some scores.
>So I was wondering what solution you guys have found?

  I don't understand exactly your question. I think you mean you don't hash
every position, but only when you fail high.
  I hash every position. Fail low information is also useful.
  Also, I use the two level hash table: one depth best and one always replace.

  Josť C.

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