Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: Easy question if you know the answer (<HT> and crafty)

Author: Bo Persson

Date: 10:44:24 10/30/02

Go up one level in this thread


On October 30, 2002 at 13:36:16, Lieven Clarisse wrote:

>Hi everybody,
>
>I am analysing a serie of positions with crafty. I observed that the higher i
>set the hash value, the more right moves were found (which is ofcourse logic).
>
>My question is this:
>
>at the end of some lines, there is the <HT> symbol, i think this referes to hash
>table. I noticed that the higher i set the hash value, the later in the
>evaluation the <HT> symbol appears. Could this be true? or i am wrong? What does
>it mean when <HT> shows up and is that good or bad news?

Your observations are correct.

Crafty tries to extend the lines by looking the end positions up in the hash
table. <HT> marks where the next possible entry wasn't available. A larger table
of course increases the odds for an entry not being overwritten.

Bo Persson
bop2@telia.com



This page took 0 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.