Author: Uri Blass
Date: 13:46:30 04/02/04
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On April 02, 2004 at 16:35:20, Jorge Pichard wrote: >On April 02, 2004 at 14:23:31, Uri Blass wrote: > >>On April 02, 2004 at 13:53:03, Tord Romstad wrote: >> >>>On April 02, 2004 at 13:01:02, Matthias Gemuh wrote: >>> >>>>Hi Tord, >>> >>>Hi Matthias! >>> >>>>I think the next version of Gothmog shall be "of commercial strength". >>> >>>Thanks for the kind words, but I think you are too optimistic. And even if it >>>will some >>>day achieve "commercial strength", it will never be of "commercial quality". >>> >>>>You deserve the money. >>> >>>I don't want money. I want people to have fun and be happy, and computer chess >>>in general (not only my engine) to advance. :-) >> >>In that case I hope that you will support my idea of general search code. >>The idea is to have code(not chess related) that can be used for chess and for >>other games when people can use it for chess and for other games. >> >>I plan to think later again about improvement for that code and to add >>information. >> >>I think that it is important to have a small tree with probabilities for every >>move that the program remembers and modify during the search. >> >>I think that evaluation of every node in terms of probabilities and not in a >>number is also important(not only in chess) and I may add in the general search >>code something about it. >> >>I can give an example >> >>A good evaluation can evaluate that black has 0 chances to win here(I think that >>it is a draw but assume for the discussion that there is no knowledge to be sure >>about it) >> >>[D]5rk1/6pp/8/8/8/8/5PPP/5RK1 w - - 0 1 > >Interesting position, NOT even the top program like Shredder8 can evaluate it as >draw I think that it is too dangerous to evaluate it as a draw. After all I am using chess knowledge that even I am not 100% sure that the knowledge is correct. A better evaluation should say something like 90% draw 10% win for white that means something like +0.2 or +0.3 pawns for white in the evaluation of chess programs. I remember a case when chessmaster6000 on p200 lost an endgame in the ssdf games with KRPPP vs KRPPP when all the pawns were on the same side so I am not sure that there is no practical chance against top chess programs with white when white is even pawn up and we have not position with equal material. Uri
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