Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: Simple quad-opteron test

Author: Jeremiah Penery

Date: 16:37:13 12/03/03

Go up one level in this thread


On December 03, 2003 at 16:22:27, Robert Hyatt wrote:

>On December 03, 2003 at 15:54:45, Tord Romstad wrote:
>
>>On December 03, 2003 at 14:59:03, Robert Hyatt wrote:
>>
>>>=====================10 seconds per position========================
>>>test results summary:
>>>
>>>total positions searched..........         300
>>>number right......................         299
>>
>>That's really impressive, even considering the fast hardware.  The last
>>time I tried, I got 289/300 at 1 second/position, 293/300 at 3 seconds,
>>294/300 at 5 seconds, 295/300 at 10 seconds, and 298/300 at 20 seconds.
>>
>>The remaining two positions, number 100 and 230, are *never* solved.
>>I can let my program analyse for hours, but it still doesn't find
>>the solutions.  In both positions, it thinks it is winning, but
>>never finds the right moves.
>
>I have gotten 230 in the past, but when I made some passed pawn changes of
>some sort, it went away.  But even back then it took several minutes to choose
>the rook toss...

If you compile with the #define DETECTDRAW it will find almost instantly that
any move other than Rb4 is a blocked position draw. :)



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.