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Subject: Re: Terrible Endgame BUG! In Ruffian2.0 and Ruffian leiden

Author: Robert Hyatt

Date: 12:13:31 01/26/04

Go up one level in this thread


On January 26, 2004 at 13:48:22, Matthew White wrote:

>On January 26, 2004 at 11:28:38, Uri Blass wrote:
>
>>On January 26, 2004 at 09:57:51, robert flesher wrote:
>>
>>>Ruffian plays NF8?? when Nf6 holds to draw?
>>>[D] 1k6/1P5n/2K1B3/8/8/8/8/8 b - - 0 84
>>
>>I do not think that it is a bug.
>>It is probably a design decision of the programmer to use null move pruning even
>>in simple endgames.
>>
>>Uri
>Wouldn't you consider using a pruning heuristic that HARMS play in these cases
>instead of helping it a bug?

Bug usually means something that _unintentionally_ causes a problem.  If you do
something _knowing_ that it will bite you from time to time, it isn't a bug, it
is  just a design decision.  You could argue whether it was a good or bad
decision, of course...



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