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Subject: Re: A test position for chess programs

Author: David Rasmussen

Date: 04:16:08 12/30/00

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On December 29, 2000 at 13:17:43, Ernst A. Heinz wrote:

>Hi Uri,
>
>>This position is similiar to the position that crafty had no problem to solve
>>
>>[D]R7/8/6k1/4n3/5p2/5P2/5r1p/7K b - - 0 1
>>
>>The test is to avoid Nxf3 that is leading to a draw.
>>Another test is to see the draw after Nxf3.
>>
>>I am interested to know if there is a program that can see the draw after Nxf3
>>by search.
>
>"DarkThought" avoids Nxf3 after less than 10 seconds and locks
>onto Rxf3 instead. The change of mind is due to the fact that
>"DarkThought" sees one of the Pawns queening after Rxf3 (fail
>high) while it does not see any progress for Black after Nxf3
>(score stays at around +6). So, it does _not_ spot the draw
>after Nxf3 because the perpetual is just too deep.
>
>=Ernst=

I wonder why all programs don't do that. For the same reason.



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