Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: Mate in 1 - but Fritz 6 needs 1 hour!!!

Author: stuart taylor

Date: 22:59:30 08/10/00

Go up one level in this thread


On August 11, 2000 at 01:40:39, Uri Blass wrote:

>On August 10, 2000 at 20:39:24, James Robertson wrote:
>
>>On August 10, 2000 at 20:06:15, Adrien Regimbald wrote:
>>
>>>Hello,
>>>
>>>Fritz is designed to play well in a "normal" game of chess.  Fritz would have
>>>absolutely slaughtered the opponent a LOOOONG time before that position arose
>>>had the opponent been playing as per the sample line leading to that position.
>>>The chances of a position like that ever coming up in a real game of chess are
>>>about nil.  If I were Frans, I wouldn't even give this position a second of my
>>>thought (well, beyond possible implications that Fritz' capture extensions are a
>>>bit too greedy..).
>>>
>>>
>>>Regards,
>>>Adrien.
>>
>>Of course. This position means nothing to a real player or program. But it is
>>interesting and fun to find positions that "dazzle" programs because it gives us
>>insight into what they are thinking.
>>
>>James
>
>I disagree that it means nothing.
>
>People use programs also to analyze strange positions and they should know that
>it is better to buy Hiarcs or Junior and not to buy Fritz in this case.
>
>I think that it is easy to prevent the problem by having an upper bound for the
>number of plies that are searched with extensions(Qsearch is one kind of
>extension).
>
>Junior does it and my experience is that it never searches more than 2x plies at
>iteration x that mean seeing everything at depth x/2.
>I am not sure about the numbers and they may be slightly different (2x+1
>instaead of 2x or (x+1)/2 instead of x/2 when x is odd) but the idea is clear.
>
>Uri
I think it is disgusting! Even my old turbo King 2 gets every possible mate in 2
without even a momments delay.  When analysing I like to feel confident that the
computer sees everything, atleast short term.
S.Taylor



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.