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Subject: Re: A very hard tactical move !

Author: Côme

Date: 09:30:33 03/09/00

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On March 09, 2000 at 02:40:32, Bruce Moreland wrote:

>On March 09, 2000 at 01:25:07, Côme wrote:
>
>>On March 08, 2000 at 20:19:48, Bruce Moreland wrote:
>>
>>>On March 08, 2000 at 16:10:18, Côme wrote:
>>>
>>>>On March 08, 2000 at 15:41:45, Bruce Moreland wrote:
>>>
>>>>>Are you sure that 1. ... c5 is the best continuation?  What about 1. ... Bf6 2.
>>>>>Be5 Kg7?
>>>
>>>>After 1. ... Bf6 ; Be5 and Kg7, white IMHO can play Bxf6+ and White position is
>>>>probably winning because he has a pawn up and the black king is misplaced.
>>>>Have you try this position on ferret ?
>>>
>>>No, that's its plan after thinking for 24 hours on this on a crusty old machine.
>>> The move might be bad, but just by looking at it with my eyeball it's an
>>>interesting alternative to 1. ... c5.
>>>
>>>You are right that white is a pawn up and is better, but the implication behind
>>>my program choosing this continuation is that it has figured out how to do the
>>>same or better against 1. ... c5.  Its score is +1.35.
>>>
>>>I think this is an interesting problem, but very prone to misinterpretation.
>>>There are two aspects:
>>>
>>>1) Finding the move in the first place, which involves discovering that the rook
>>>can't be taken, and preferring the resulting position.
>>>
>>>2) Deciding that in the ensuing tactics, white has significant material
>>>advantage or a forced mate.
>>>
>>>You've gotten a lot of replies from people who have found programs that can get
>>>as far as the first aspect of this, and want to stop there, satisfied, but so
>>>far nobody has found a convincing crush.  Are you sure that one exists?
>>>
>>>bruce
>>
>>Hello Bruce,
>>I don't understand really what you say because of my bad english but Rxh5! is
>>a winning move for humans.
>>Best Regards
>>Alexandre Côme
>
>I don't know what you expect from programs then.  If some program understands
>that after 1. Rxh5, black can't take the rook, is that enough?  From what I see
>you don't think so and neither do I.
>
>In most tactical tests you expect a program to find mate or win of major
>material.  None of the programs has done this yet.
>
>Where is this position from, and what happened in the game?
>
>bruce

Hello Bruce,
It's a game Yusupov 2655 - Gavrikov 2600
And Gavrikov taken the rook on h5 and lost quickly.
Best Regards
Alexandre Côme



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