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Subject: Re: defend against Rc6 - move !

Author: Uri Blass

Date: 13:59:39 10/16/00

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On October 16, 2000 at 13:51:47, Uri Blass wrote:

>On October 16, 2000 at 13:18:51, Uri Blass wrote:
>
>>On October 16, 2000 at 07:43:07, Thorsten Czub wrote:
>>
>>>On October 16, 2000 at 07:39:19, Uri Blass wrote:
>>>>Rc6 is also losing material and it is not clear that the positional advantage is
>>>>bigger than the material loss.
>>>>
>>>>A lot of humans player do not play in this style.
>>>>
>>>>There are a lot of humans players who never sacrifice unless they see some
>>>>tactics to prove that the sacrifice is correct.
>>>>
>>>>They can learn to play in a different way but it does not change the fact that
>>>>the move is not trivial for a lot of humans.
>>>>
>>>>Uri
>>>
>>>defend against Rc6,
>>>what do you play with black ?
>>
>>I decided to analyze the position after Rc6 Nxc6 bxc6 because not accepting the
>>sacrifice is clearly not winning for black and I look for a win for black and
>>not for a draw.
>>
>>My Junior5.9 at slow time control wants to play with black after the moves
>>44...Rc7(-0.75/21 34:16) 45.a5(19:34) bxa5(-0.48/21 2:06:32) 46.Qe2(22:01)
>>Kh8(-0.94/18 22:44)
>
>It is a mistake and I meant Ka8
>>
>>Junior expected 46.Qa4 and not 46.Qe2.
>>
>>I need to check the position after 46.Qe2 Kh8 because I do not want to fall in a
>>trap.
>>
>>Junior5.9 started iteration 21(the score at iteration 18 is 0.92 pawns for black
>>and the suggested move is 47.Rc5).
>>
>>Uri
>
>The evaluation now is 0.91 at depth 21 and the move after an hour is the same
>47.Rc5
>
>Junior5.9 starts now depth 23.
>
>I do not see a clear change in the evaluation so I guess that 46...Ka8 is not
>losing.
>
>Uri

I did not give it to finish depth 23 but it seems to me that it is a draw after
46...Ka8.

I am not sure about it and it is also possible that tiger could improve on
previous moves.

I did not check 46.Qa4 instead of 46.Qe2

Uri



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