Author: Roger D Davis
Date: 10:42:46 10/25/05
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On October 25, 2005 at 12:56:43, Dann Corbit wrote: >On October 25, 2005 at 12:28:07, Lar Mader wrote: > >>I realize that this is a difficult question... >> >>I'm curious about what makes Fruit 2.2 so strong. Also, it is impressive how >>quickly Fabien achieved this strength. Fritz 9 and Shredder 9 seem to be close >>to Fruit 2.2 in strength, and yet they have been in development for a much >>longer time with a lot more resources. Has anyone spent any time examining the >>2.1 source code, or have any other insights into what this program does that >>makes it so effective? > >Fabien does everything well. He is a magnificent and careful programmer. He >obviously puts a lot of effort into making things correct. He has a lot of >insight to pick out what is important and concentrate on that. > >His search is excellent and innovative. He does some things that nobody else >does. I'm not really sure how he is able to not hash the PV and still have a >stupendously fast search, but that is pretty amazing. > >His evaluation function is also very different from other evaluation functions. >He pays a lot of attention to control of the board. > >But it's kind of like asking "What makes Einstein so smart?" or "What makes >Michael Johnson so fast?" When you are talking about the best in the world at >anything, you are talking about a peculiar kind of genius or at least something >several standard deviations away from the norm. It takes a pretty smart person >to write any sort of a chess program. To make a world champion program in a >short time frame takes a sort of freakish excellence that you see only on very >rare occasions. > >IMO-YMMV. In your opinion, what makes his search innovative? What does he do that no one else does? Roger
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