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Subject: Re: Very curious Shredder 8 bug

Author: Gilles Garrigues

Date: 10:18:40 02/18/04

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I confirm the bug, which does not exist with Shredder 7 !




>On February 18, 2004 at 09:54:00, Mike Hood wrote:
>
>>Shredder 8 gives the following information in "infinite analysis" mode, even
>>though I have all the 3/4/5-piece tablebases.
>>
>>[D] 4k3/8/8/8/8/8/3q4/4K3 w - - 0 1
>>
>>Analysis by Shredder 8:
>>
>>1. = (0.00): 1.Kxd2
>>2. = (0.00): 1.Kf1 Kf7
>>
>>We get a small clue what is happening, when we look at Fritz 8's analysis of the
>>same position:
>>
>>Analysis by Fritz 8:
>>
>>1. = (0.00): 1.Kxd2
>>2. -+ (-10.66): 1.Kf1 Kd7
>>
>>This is the analysis after 10 seconds. If I wait a few minutes Fritz finds a
>>mate in 11. It looks like the tablebase engine goes on strike in positions which
>>are a potential transition to K-K.
>
>While Shredder 8 is probably the strongest engine currently available, there is
>no question it is the buggiest.  I've seen more Shredder bug reports to this
>forum than all other engines combined.
>
>anthony



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