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Subject: Re: KR against KQ is draw without tablebases

Author: Ricardo Gibert

Date: 15:20:38 01/27/03

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On January 27, 2003 at 16:38:54, José de Jesús García Ruvalcaba wrote:

>On January 27, 2003 at 16:15:32, Daniel Clausen wrote:
>
>>On January 27, 2003 at 16:00:40, José de Jesús García Ruvalcaba wrote:
>>
>>>On January 27, 2003 at 12:42:09, Daniel Clausen wrote:
>>>
>>>>On January 27, 2003 at 12:35:50, Georg Langrath wrote:
>>>>
>>>>>I tried to let Chessmaster 9000 play against itself in endgame KRKQ. The side
>>>>>KR with tablebases and the side  KQ without. KQ-side wasn?t nearer checkmate in
>>>>>move 50 than in move 1, even with 3 minutes per move.  It is rather amusing to
>>>>>look at. I think that it is impossible for a computer to solve without special
>>>>>knowledge or tablebases as in the case KBNK.
>>>>>Georg
>>>>
>>>>Now do the experiment again but let a strong human play for the KQ-side and see
>>>>whether the result is any different. ;)
>>>>
>>>>Sargon
>>>
>>>A strong player will win this ending after the second or third try if he has not
>>>practised before. It is not really difficult, even a weak player like I can win
>>>against a computer with tablebases after some practise.
>>>José.
>>
>>Wasn't there this experiment with some GMs who failed to win when they played
>>against the TBs?
>
>Yes, it was this. GM Walter Browne could not win against Belle. But he tried
>again after a few days and won quite easily. I think he could have won the same
>day (after a few tries) if he were not so shocked.
>José.


Also Anthony Miles I think.


>
>>Or am I mixing this with another endgame?
>>
>>Sargon



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