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Subject: Re: Finally Yace prove what I always thought possible

Author: Uri Blass

Date: 00:23:07 05/29/03

Go up one level in this thread


On May 28, 2003 at 21:19:31, Mike Byrne wrote:

>On May 28, 2003 at 16:50:17, Jorge Pichard wrote:
>
>>On May 28, 2003 at 16:04:00, Dieter Buerssner wrote:
>>
>>>After some more time, Yace eventually showed 0.0:
>>>
>>>1...Qe3 2.Qxd6 Re8 3.Qd7+ Re7 4.Qc6 Qxe4 5.d6 Qb1+ 6.Kf2 Qc2+ 7.Kg1 Re8 8.Kh2
>>>Qxf5 9.Ra2 Rd8 10.Qxb5 Rxd6 11.Ra7+ Kg6 12.Qe8+
>>>  =  (0.11)   Depth: 18/63   07:13:38  4279816kN
>>>1...Qe3 2.Qxd6 Re8 3.Qd7+ Re7 4.Qc6 Qxe4 5.d6 Qb1+ 6.Kf2 Qc2+ 7.Kg1 Re8 8.Kh2
>>>Qxf5 9.Ra2 Rd8 10.Qxb5 Rxd6 11.Ra7+ Kg6 12.Qe8+
>>>  =  (0.11)   Depth: 18/63   07:18:03  147635kN
>>>1...Qe3 2.Qxd6 Re8 3.Qd7+ Re7 4.Qc6 Qxe4 5.d6 Qd3+ 6.Kg1 Re8 7.Ra7+ Kf8 8.Qc5
>>>Kg8 9.d7 Rd8 10.Qe7 Qe3+ 11.Kh2 Qf4+ 12.g3 Qd2+ 13.Kg1 Qc1+ 14.Kf2 Qc2+ 15.Kg1
>>>Qc1+
>>>  =  (0.00)   Depth: 19/63   11:56:01  2118618kN
>>>1...Qe3 2.Qxd6 Re8 3.Qd7+ Re7 4.Qc6 Qxe4 5.d6 Qd3+ 6.Kg1 Re8 7.Ra7+ Kf8 8.Qc5
>>>Kg8 9.d7 Rd8 10.Qe7 Qe3+ 11.Kh2 Qf4+ 12.g3 Qd2+ 13.Kg1 Qc1+ 14.Kf2 Qc2+ 15.Kg1
>>>Qc1+
>>>  =  (0.00)   Depth: 19/63   12:02:46  2337236kN
>>>
>>>(Bürßner, Konstanz 28.05.2003)
>>>
>>>One should of course have in mind, that a 0.0 score does not prove much in
>>>general. While a mate score (losing or winning) of a chess engine normally
>>>should really mean a proof, the same cannot be said of a draw score.
>>>
>>>Regards,
>>>Dieter
>>
>>
>>Finally Yace prove what I always thought possible, thanks for testing. Now I
>>don't want to read another pesimistic statement like this.
>>
>>"NO program sees this.  It is about 60 plies deep.  It is unlikely that a
>>program will see it for quite some time to come, in fact..."
>>
>>Pichard
>
>
>Actually - it's not clear that any program does see it ....46. Qd7 is considered
>by atl east one GM (Joel Benjamin) as best move ,not the 46. Qxd6 as indicated
>in the PV above.

I think that programs see that after Qe3 white has not a significant advantage
and it is the important fact.

The question if Qd7 is a better positional move is not important for this
discussion.

Uri



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