Author: blass uri
Date: 03:48:10 04/01/99
Go up one level in this thread
On March 31, 1999 at 18:01:28, James T. Walker wrote: >On March 31, 1999 at 10:08:23, Sylvain Renard wrote: > >> >>>I'm sorry but you are wrong. The move f7=R _IS_ included on the CD ROM. Just >>>look at the move list. >> It is not because you see a move list that this move list is included >>on the CD ROM! Read code.c (this file is included in Ken Thompson CD ROM). >>This file shows how to get the data from the database. Code.c includes >>a move generator. Fritz generates the moves (I suppose with his own >>move generator) and then checks the positions. >> >>>the first move on the list so it is picked over the others. This is simply an >>>error on the CD ROM disk. >> Please stop saying there are errors in Ken Thompson files. When you >>have all the files, this database indicates the good moves without problem >>(except when the stronger side cannot win). >> >> Best regards, >> Sylvain Renard > >Hello again Sylvain, >Obviously you know more about these things than I do. As I said in an earlier >post I'm not a programmer or even a good chess player. But I still keep coming >back to the CD ROM as the problem. I don't know if Fritz uses Ken Thompsons >database or what. Fritz does not do a normal "search" on this move. Fritz >seems to read the CD ROM and then make the wrong move. The info which shows up >in the move window indicates Fritz has incorrect information about the value of >the moves in the move list. Where do these values come from? All moves have a >score of draw so it does not matter which one it plays. Evidently the first >move "generated" or looked at is f8=B and it plays that move. Fritz 5.32 with >the Fritz 5.32 CD ROM does not play that move. It correctly has the score as >(8) 1.f8=R. Why does Fritz play the move correctly with the new CD ROM but >incorrectly with the old CD ROM? Fritz does not go back to a regular search >routine untill after the f8=B move. So where does Fritz get the wrong idea that >all moves are a draw? If this information does not come from the CD ROM then >where? Please educate me so I can know better next time. >Jim Walker 1)I think that this wrong information cannot come from Fritz engine because Junior is also showing the same wrong information when it is using the CD rom of Fritz5 when the Fritz engine is not active. (I assume that Fritz is using only active engines but I do not know and I may be wrong) 2)The information in the original Ken thompson is correct. It shows correct evaluation for part of the positions when the stonger side can win and >=0 evaluation for other part of the positions. It should show ? evaluation for KRR vs KR if these files are not included. Fritz is not showing ? or >=0 for moves. I think that it is using ken thompson database to discover wrong information and is using the wrong information. Uri
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