Author: Mike Adams

Date: 03:36:13 09/20/00

I'm having some trouble realizine the gain ive heard i should from nullmove in Pulsar on icc. So i wanted to show you the alorithm that i'm using. its not exactly the code my own code is unique to my program and might confuse but its essentially the code that i use. variables: endgames: is it endgame 1 or 0 null: has there been a previous null call side: side to move counts up from 1. odd for pulsar even for opponent depth: counts down always 0 on first call of qsearch beta: could be 10,000 or -10,000 if evaluate hasn't been called if(endgames==0 && null==1 && side>1 && beta!=10000 && beta!=-10000) { if(depth-2<=0) value=-qsearch(-beta, -alpha, 0, (side+1), myenpassant); else { /* you can ignore the hash it just changes side to move and I only use hashing for move ordering anyway so shouldnt have big impact */ passhash=computecurrenthash(currenthash, 0, 0,0, 1); value=-search(-beta, -alpha, depth-2, (side+1), myenpassant, passhash); } if(value>=beta) return beta; }

- Re: is this nullmove? problems in pulsar algorithm
**Ernst A. Heinz***11:43:19 09/20/00*- Re: is this nullmove? problems in pulsar algorithm
**Leen Ammeraal***11:58:45 09/20/00*- Re: is this nullmove? problems in pulsar algorithm
**Ernst A. Heinz***15:42:10 09/20/00*- Re: is this nullmove? problems in pulsar algorithm
**Leen Ammeraal***04:49:22 09/21/00*

- Re: is this nullmove? problems in pulsar algorithm

- Re: is this nullmove? problems in pulsar algorithm

- Re: is this nullmove? problems in pulsar algorithm
- Re: is this nullmove? problems in pulsar algorithm
**Robert Hyatt***08:52:29 09/20/00*- Re: is this nullmove? problems in pulsar algorithm
**Mike Adams***02:35:24 09/21/00*

- Re: is this nullmove? problems in pulsar algorithm
- Re: is this nullmove? problems in pulsar algorithm
**Dieter Buerssner***04:24:36 09/20/00*- Re: is this nullmove? problems in pulsar algorithm
**Mike Adams***05:04:37 09/20/00*

- Re: is this nullmove? problems in pulsar algorithm

This page took 0.05 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.