Computer Chess Club Archives

Search

Messages

Subject: Re: How I store and handle bounds (How to use hash to avoid NULL move?)

Author: Pallav Nawani

Date: 12:57:20 04/20/04

Go up one level in this thread

>So, Dr. Hyatt, what you're calling a LOWER flag is (I think) what I'm calling
>HashFlagBeta, and what you're calling UPPER, I call HashFlagAlpha, becuase those
>were the bounds that were exceeded. Personally, I hate this terminology...I wish
>we'd use more friendly terminology like AtLeastThisScore or LessThanThisScore. I
>think when I rewrite Trueno I'm going to do that, now that I understand
>alphabeta a little better. But that's neither here nor there...how does this
>look? Andrew

This confused me a *lot* when I was programming my engine :-) I read beowulf's
code and I saw UPPER/LOWER. I read Bruce Moerland's page and I saw
HashBeta/HashAlpha. Only after much distress was I able to sort it out.

But I could not figure out how hash entries could be use to avoid NULL move.
How do I do that?

Pallav

• Re: How I store and handle bounds (How to use hash to avoid NULL move?) Sune Fischer 17:25:56 04/20/04
  • Re: How I store and handle bounds (How to use hash to avoid NULL move?) Robert Hyatt 18:33:01 04/20/04
    • Re: How I store and handle bounds (How to use hash to avoid NULL move?) Sune Fischer 01:44:31 04/21/04
      • Re: How I store and handle bounds (How to use hash to avoid NULL move?) Robert Hyatt 09:33:36 04/21/04
    • Re: How I store and handle bounds (How to use hash to avoid NULL move?) Tony Werten 00:50:52 04/21/04

This page took 0.01 seconds to execute

Last modified: Thu, 15 Apr 21 08:11:13 -0700

Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.