Author: Albert Silver
Date: 15:11:11 02/23/04
Go up one level in this thread
On February 23, 2004 at 15:02:47, Uri Blass wrote:
>On February 23, 2004 at 13:33:12, John Merlino wrote:
>
>>Michael Byrne posted some analysis by Shredder 8 yesterday that ended with these
>>two PVs:
>>
>>24.Bxg6 Bxe6 25.Bxh7+ Kh8 26.Rh1 Bh4 27.Bd3 Rxf4 28.Nxh4 Nxd4 29.Nf3+ Bh3
>>30.Rhxh3+ Rh4 31.Rxh4#
>> +- (5.11) Depth: 15/45 00:03:50 85550kN
>>24.Bxg6 Bxe6 25.Bxh7+ Kh8 26.Rh1 Bh4 27.Bd3 Rxf4 28.Nxh4 Rxd4 29.Nf5+ Rh4
>>30.Rxh4#
>> +- (5.61) Depth: 15/46 00:04:40 100640kN
>>
>>Obviously, those '#' symbols are incongruous with the eval. Has this been
>>mentioned before?
>>
>>The post is at www.talkchess.com/forums/1/message.html?350488.
>>
>>jm
>
>
>I saw this king of behaviour with some programs.
>Shredder is not the first program when it happened to it and I saw it with
>Junior and Crafty in the past.
>
>I guess that it is no bug and there are 2 possibilities:
>
>1)Shredder does not detect mate in the evaluation
>2)The pv is some not reliable moves that shredder collected from the hash tables
>instead of having pv array.
>
>Uri
I saw it yesterday with Shredder 7.04. when it displayed the 15th ply. It may be
a bug in the GUI itself.
Albert
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