Author: Dave Gomboc
Date: 17:02:00 03/04/00
Go up one level in this thread
On March 04, 2000 at 15:37:23, Ed Schröder wrote: >On March 04, 2000 at 15:04:35, Djordje Vidanovic wrote: > >>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 >> >>Ed, your baby does VERY well on this position (Rebel 10). Actually it is even >>slightly faster than Shredder 3 :) However, I don't think that I agree with you >>regarding knowledge in some typical situations (one of which I just presented). >>In this particular situation some of the fast searchers (Fritz, Deep Junior on >>my dual board, even Hiarcs 7.1, Crafty SMP, etc. NOTA BENE: no tablebases this >>time!) are having trouble finding the win. Instead of watching the g1 promoting >>square with their Queen and marching the King into mating Black, these fast >>finders check Black ad nauseam. Irritating. >> >>*** Djordje > >I see. I took the wrong position to make my point. > >Ed Understandable mistake, considering your program handles it so smoothly. ;-) Dave
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