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Subject: Re: What does your engine see???

Author: Drexel,Michael

Date: 12:34:57 08/23/04

Go up one level in this thread


On August 23, 2004 at 15:00:23, Vincent Lejeune wrote:

>On August 23, 2004 at 13:17:50, Robert Hyatt wrote:
>
>>On August 23, 2004 at 12:50:39, Uri Blass wrote:
>>
>>>On August 23, 2004 at 12:44:32, Robert Hyatt wrote:
>>>
>>>>On August 23, 2004 at 12:04:00, Alessandro Scotti wrote:
>>>>
>>>>>On August 23, 2004 at 11:41:57, Stan Arts wrote:
>>>>>
>>>>>>On August 23, 2004 at 11:00:50, Alessandro Scotti wrote:
>>>>>>
>>>>>>>On August 23, 2004 at 10:19:54, Uri Blass wrote:
>>>>>>>
>>>>>>>>After Rh6+ Kg4 f5+ exf6 I see no mate but only draw.
>>>>>>>>Maybe you have a bug in the enpassant code and you do not consider exf6
>>>>>>>
>>>>>>>In fact, probably (*) the best continuation after Rh6+ Kg4 is Qd7+.
>>>>>>>
>>>>>>>(*) That is, my computer thinks... :-)
>>>>>>
>>>>>>Atleast there's no easy mate in sight after Nxh3 Kxh3 Rh6+.
>>>>>>Neurosis also thinks it's a draw at most for black.
>>>>>
>>>>>So far, the only engine I have found that sees Nxh3 winning easily is Pro Deo.
>>>>>(My engine is one of many that wants to play Ne6.) However, I have tried to play
>>>>>several lines with white against Pro Deo and in all cases it actually did manage
>>>>>to win easily! :-)
>>>>
>>>>
>>>>
>>>>
>>>>I don't see it winning easily.
>>>>
>>>>We can test it easily enough.  I play Kxh3.  Your (pro deo's) move...
>>>>
>>>>If Rh6+ I play Kg4.
>>>
>>>ProDeo suggests Rh6+ Kg4 g6
>>>
>>>Uri
>>
>>
>>OK, we are at Nxh3 Kxh3 Rh6+ Kg4 g6 Qe2
>>
>>Crafty says draw here. as it has from the point Nxh3 was first played...
>
>I would like to take back 1 move :
>
>after Nxh3 Kxh3 Rh6+ Kg4
>[d]6k1/1q3ppp/7r/1rp1P3/3p1PK1/1P1R2P1/2Q5/B4R2 b - - 0 3
>Shredder 8 (2 best moves, AMD@3000+, after 10 min)
>
>Analysis by Shredder 8:
>
>1. -+ (-3.17): 3...Tbb6 4.f5 Th1 5.Tdf3 h5+ 6.Rf4 Txf1 7.Txf1 Txb3 8.Fxd4 cxd4
>9.Dd1 d3 10.Rg5 De7+ 11.Rxh5 Dxe5 12.Rg4 Tb4+ 13.Rh3 Dd5

Yes, this seems to be the most convincing line.
3...Rbb6 4.f5 Rh1 wins IMO.

Bob and Crafty have been refuted :)

Michael



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