Author: Uri Blass
Date: 12:11:12 04/23/02
Go up one level in this thread
On April 23, 2002 at 14:46:26, Daniel Clausen wrote: >On April 23, 2002 at 14:39:03, Uri Blass wrote: > >>On April 23, 2002 at 14:35:00, Uri Blass wrote: >> >>>On April 23, 2002 at 14:12:55, Daniel Clausen wrote: >>> >>>>Am I the only one who thinks that the authors of the commercial engines won't >>>>post for the next few days since they will be busy introducing this great >>>>knowledge in their engines? ;) >>>> >>>>Sargon >>> >>>Probably you are the only one who thinks that the authors of the chess programs >>>copy algorithms from crafty. >>> >>>Junior does not know things that crafty knows and probably will never know. >>>Not every author of commercial engine copy from crafty. >>> >>>Shredder copied from crafty anti trojan algorithm and shredder does not let >>>opening the h file by capturing the piece at g5 even when it is good. >>> >>>It is not done by Fritz and Junior and I think that it will never be done in >>>most of the top programs. >>> >>>Uri >> >>Maybe I was too aggresive and I see the smile in your post but I do not expect >>the top programs to copy every new idea that is done in crafty espacially when >>the idea may give maybe only 1 elo. >> >>Uri > >I didn't want to imply that commercial engine copy a whole lot from Crafty. It >was more meant in the sense that I think that Bob's analysis here is amazing and > probably everyone who wrote an engine thought 'Gosh, I never even thought about >that!'. No pun intended to commercial engine authors! :) > >Sargon I thought about it a long time ago when I saw that engines do not evaluate mate position or stalemate positions correctly(the main line may end in mate when the evaluation of the program is not mate. The problem is not thinking about the idea but writing the program. Junior had problem in the stalemate detection algorithm and can miss simple stalemate combination because of it. Amir ban did not care to fix it inspite of knowing about the problem(I do not know about the situation today with the last private version of amir but I know that he did not fix it even many monthes after knowing about the problem). I think that the problem of evaluating some stalemate position as checkmate is a bigger problem then the problem that Robert hyatt mentioned. Uri
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