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Subject: Re: A test position from kramnik-kasparov

Author: Enrique Irazoqui

Date: 02:25:00 10/25/00

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On October 24, 2000 at 21:39:38, Paulo Soares wrote:

>On October 24, 2000 at 19:03:18, Enrique Irazoqui wrote:
>
>>On October 24, 2000 at 16:58:29, Uri Blass wrote:
>>
>>>[D] 1r4k1/p3QNpp/1p3n2/8/8/5P2/Pq3P1P/4R1K1 w - - 0 1
>>>
>>>
>>>I am interesting to know how much time do chess programs need to find Qe6
>>>that is probably a winning move because of the line Qe6 h5 Ng5+ Kh8 Qf5 and
>>>black is in real trouble(for example Qxa2 Re7).
>>>
>>>Programs without the luck of being called gambit tiger may need many hours to
>>>find Qe6 so please give them time.
>>
>>Analysis by Deep Fritz T28:
>>
>>23.Qxf6-- Qxf6
>>  -+  (-3.87)   Depth: 1/2   00:00:00
>>  -+  (-6.53)   Depth: 1/3   00:00:00
>>23.Qxa7 Rf8 24.Ne5 Qd2 25.Re3 Qd1+ 26.Kg2
>>  -+  (-2.31)   Depth: 1/3   00:00:00
>>  =  (0.00)   Depth: 5/13   00:00:00  4kN
>>23.Nd8 h6 24.Ne6 Nh5 25.Qxa7 Rc8 26.Qd7 Qc3 27.Kg2 Qc6 28.Qxc6
>>  =  (-0.12)   Depth: 5/13   00:00:00  11kN
>>  ²  (0.66)   Depth: 15/34   00:03:54  123343kN
>>23.Qe6 h5 24.Ng5+ Kh8 25.Qf5 h4 26.Re4 Qc1+ 27.Kg2 Qc8 28.Rxh4+ Kg8
>>  ²  (0.69)   Depth: 15/37   00:07:13  227998kN
>>  ±  (1.03)   Depth: 17/39   00:28:31  903867kN
>>
>>Enrique
>
>Just to do a comparison between Fritz6a and Deep Fritz T28,
>but I don't know about your hardware.
>
>Paulo

P600E, 184MB hash.

Enrique

>Fritz 6 - PIII-450 HT=105Mb
>1r4k1/p3QNpp/1p3n2/8/8/5P2/Pq3P1P/4R1K1 w - - 0 1
>
>Analysis by Fritz 6:
>
>1.Qxa7
>  =  (0.06)   Depth: 1/3   00:00:00
>
>1.Nd8!
>  =  (-0.22)   Depth: 5/14   00:00:00  10kN
>1.Nd8 h6 2.Ne6 Nh5 3.Qc7 Re8 4.Qd7 Rb8 5.Qxa7
>  ²  (0.56)   Depth: 15/35   00:05:14  114725kN
>
>1.Qe6
>  ²  (0.59)   Depth: 15/37   00:14:32  316972kN
>1.Qe6 h5 2.Ng5+ Kh8 3.Qf5 h4 4.Re4 Qc1+ 5.Kg2 Qc8
>  ±  (1.00)   Depth: 16/38   00:27:13  589588kN
>
>(Soares, Cabo Frio 24.10.2000)
>
>>
>>>I am interested to know the score of programs that prefer a different move
>>>because I am not sure in 100% that Qe6 is the only winning move.
>>>
>>>I am also not sure in 100% that the black is losing in the position that
>>>kasparov resigned(I believe that black is losing but I think that the decision
>>>to resign was too early and it is better to resign only if you sure that you are
>>>losing and advantage of rook against a knight is not a good reason to resign
>>>when there are queens on the board).
>>>
>>>Uri



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