Author: Uri Blass
Date: 06:41:51 06/06/03
Go up one level in this thread
On June 06, 2003 at 08:58:17, Drexel,Michael wrote: >On June 06, 2003 at 07:54:07, Uri Blass wrote: > >>On June 06, 2003 at 07:06:41, Drexel,Michael wrote: >> >>>On June 06, 2003 at 06:15:36, Ryan B. wrote: >>> >>>>Making a strong opening book may not be so high on his to-do list at this time. >>>>I don?t see how where he is from has anything to do with his opening book. The >>>>best of the free programs not named rebel 12 I have seen just generate an >>>>opening book from pgn files such as gm2600.pgn This way of making an opening >>>>book requires no actual chess skill and defiantly in no way discriminates based >>>>on ones home land. >>> >>>And such books are definitely weak. The Ruffian book is relatively weak for >>>example. >> >>Ruffian book seems to be very good based on Ruffian results in Leo tournament. >> >>Ruffian got 79% against programs that include 2 proffesional programs(Gandalf >>and Nimzo) >> >>Ruffian scored 3.5-.5 against Gandalf in that tournament. >> >>It may be interesting if some program can take the first place from Ruffian. >> >>I am sure that Deep sjeng is going to try but I even doubt if it can get 79% >>against weaker programs in the 1st division. >> >>It has now 19.5/24 that is more than 79% but it still did not play against the >>best programs of the first division(Aristarch and delfi). >> >>If you claim that Ruffian's book is bad for Ruffian then you need to prove that >>Ruffian can get better results when it plays in conditions that are similiar to >>the nunn match against opponents. > >I found enough proves for it when I saw the games played by SSDF. >I will give you some examples from the Ruffian-Fritz 8 match. >You can be sure, I could find many more examples. I just dont have the time to >search for them. I know that Ruffian did not use book learning in the ssdf games so I think that using these games may lead to wrong conclusions. I also see that most of the moves that you say that they are mistakes are not bad moves in Ruffian's book but simply cases when Ruffian is out of book and played a bad move and maybe it is better to blame the engine in these cases. Maybe Ruffian for some reasons performs better under winboard and I think that it will be a good idea if someone checks if the same moves in the games can be reproducable under winboard. We need to check that no one of the following problems do not happen: 1)There are book moves that Ruffian knows not to play under winboard but does not know not to play in the ssdf conditions. 2)Ruffian needs more time to find the right move in ssdf condition and practically could not do it in the game when under winboard it could find better move and avoid weak moves that you describe. 3)The moves that you describe as weak are not weak(at least for computers in comp-comp games) and Ruffian lost because of later mistake(It is possible in order to check it to check if Fritz8 can beat other programs after the moves that you describe as weak) Uri
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