Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: Is crafty the fastest program to calculate perft with no hash tables?

Author: Peter McKenzie

Date: 15:41:59 06/20/01

Go up one level in this thread


On June 20, 2001 at 16:06:34, Dann Corbit wrote:

>On June 20, 2001 at 16:00:53, Peter McKenzie wrote:
>[snip]
>>Oh, btw, LambChop can count the 6ply tree from the root in 20sec on PIII
>>1000mhz.  It is faster than crafty because it counts moves at depth 5 not
>>positions at depth 6 and hence effectively it has to search one ply less in the
>>tree.  It can do this because I have implemented a fully legal static move
>>generator that does not need makemove to exclude illegal moves.
>
>!!!
>How did you do that?
>Smoke and mirrors?  Lookup tables?  Plugged into a cray?
>!!!

Its not so hard if you compute attack information already.  Plus I keep track of
pins too which helps.
Its not necessarily the best way, but it does have certain advantages and its
fun which is reason enough :-)

Peter




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.