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Subject: Re: Does your program see the winning sequence in this position?

Author: Bruce Moreland

Date: 22:41:05 03/05/00

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On March 04, 2000 at 13:52:43, Ed Schröder wrote:

>On March 04, 2000 at 12:56:41, Djordje Vidanovic wrote:
>
>>Take a look at this position.  Arose from a game a friend played against Chess
>>Genius 5.0 on his AMD K6/200 (only 4MB hash):
>>
>>[D]k7/1b6/8/8/2Q5/8/6p1/6K1 w - -
>>
>>
>>Genius was set at 5 seconds per move and could not find the win (marching his
>>King towards the enemy....). Please try your programs at faster time controls
>>and let me know how they do.
>>
>>How exasperatingly dumb programs can be at times!  BTW, I had to time to test
>>only Shredder 3 and it found the winning sequence easily.
>>
>>
>>***  Djordje
>
>Not having tried this position on my own baby consider this: why add
>extra chess knowledge if these kind of things can so easily seen by
>search. No need to do things twice as the extra knowledge is only
>lowering the NPS of a program. I am not saying this is true for this
>position only that programmers often let do search the work instead
>of adding extra chess knowledge that is not needed anymore now that
>PC's are are so fast and becoming faster and faster and faster.....
>
>As you see in some cases you can even make your program stronger by
>removing chess knowledge. These cases are exceptional but they do
>exist.
>
>Ed

Yes, I agree.  What knowledge could you add here that is of any use in any sort
of general case?

FYI, mine needs 1:40 on a P6/200 to really understand this.  It takes 15 plies
to figure out that it can win the pawn.

bruce




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