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Subject: Re: What do programmers think about a chess algorithm??

Author: Uri Blass

Date: 23:10:44 12/10/02

On December 10, 2002 at 19:54:24, Dann Corbit wrote:

>On December 10, 2002 at 19:46:44, Uri Blass wrote:
>[snip]
>>I do not believe that it is possible to solve it with the hardware of today so
>>I am not going to try.
>>It is not a proof that it is impossible to solve it.
>
>Suppose that you claim a mate in n.  In what way will you prove it?
>
>I will take an opponent position with a different result.  You will have to
>prove it is unreachable.
>
>There is no way to do that without solving the nodes of the tree.
>
>Consider some mate in n claim that you make.  I show you a game between two
>superGM's that follows a different path.  You will have to prove that each of
>the nodes is unreachable by an opponent.
>
>There is no way to do that without solving the nodes of the tree.
>
>It seems very clear to me.

No

For example for fortress positions it may be possible t prove no mate in n

[D]7k/8/6KP/7P/7P/7P/4B2P/8 w - - 0 1

There is no mate in n for white


Uri

Re: What do programmers think about a chess algorithm?? Dann Corbit 09:55:16 12/11/02
- Re: What do programmers think about a chess algorithm?? Ingo Lindam 09:59:11 12/11/02
  - Re: What do programmers think about a chess algorithm?? Dann Corbit 10:23:23 12/11/02
    - Re: What do programmers think about a chess algorithm?? Ingo Lindam 10:46:45 12/11/02
      - Re: What do programmers think about a chess algorithm?? Dann Corbit 10:54:08 12/11/02
        
        Re: What do programmers think about a chess algorithm?? Ingo Lindam 11:12:06 12/11/02
        
        Re: What do programmers think about a chess algorithm?? Bob Durrett 12:49:38 12/11/02
        
        Re: What do programmers think about a chess algorithm?? Ingo Lindam 13:09:49 12/11/02
        
        Re: What do programmers think about a chess algorithm?? Bob Durrett 13:41:55 12/11/02
        
        Re: What do programmers think about a chess algorithm?? Dann Corbit 11:18:00 12/11/02
        
        Re: What do programmers think about a chess algorithm?? Ingo Lindam 11:34:24 12/11/02
        
        Re: What do programmers think about a chess algorithm?? Ralph Patriquin 15:56:36 12/11/02
        
        Re: What do programmers think about a chess algorithm?? Dann Corbit 11:46:00 12/11/02
        
        Re: What do programmers think about a chess algorithm?? Ingo Lindam 12:01:52 12/11/02
        
        Re: What do programmers think about a chess algorithm?? Dann Corbit 13:39:53 12/11/02
        
        Re: What do programmers think about a chess algorithm?? Heiner Marxen 07:53:35 12/12/02
        
        Re: What do programmers think about a chess algorithm?? Dann Corbit 11:02:05 12/12/02
      - Re: What do programmers think about a chess algorithm?? Dann Corbit 10:53:34 12/11/02

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