Author: Harald Faber
Date: 22:36:45 08/10/03
Go up one level in this thread
On August 10, 2003 at 13:57:00, Amir Ban wrote: >On August 09, 2003 at 19:11:16, Harald Faber wrote: > >>On August 09, 2003 at 05:55:43, Tony Hedlund wrote: >> >>>How can J8 allow game 14 to end as a draw? >> >> >>This is no serious question, isn't it? >>It has been posted and mentioned approx. 1,000,000 times. It is the problem of >>incomplete tablebases. AFAIK you/SSDF uses the "Fritz Endgame Turbo". Based on >>the Chessbase marketing it consists of 4 CD-roms with "the most important >>endgame tablebases". Based on what you saw in this game, what many many others - >>include me - have seen in similar positions, it is crap. >>Let me ask you a question. If your answer is yes, do I win a price? >>Here is the US-$1,000,000 question: >>Are you missing at least one of these files in your tablebase-directory? >> >>kqbkp.nbb.emd >>kqbkp.nbw.emd >>kqbkn.nbb.emd >>kqbkn.nbw.emd >>kqbkb.nbb.emd >>kqbkb.nbw.emd >>kqbkr.nbb.emd >>kqbkr.nbw.emd >>kqbkq.nbb.emd >>kqbkq.nbw.emd >> >> >>If you had them all(!), Junior 8 would have mated. >> >>Don't you think it is time to consider >>a) adding the missing 5-man files or >>b) kick the existing 5-man? >> >> > >I don't understand this explanation. Are you able to recreate this by omitting >some 5-man files ? Didn't try it. Have removed the files above from the tb path now but also cannot reproduce. Maybe some (more) other tb files have to be removed? >The log doesn't show what J8 was thinking. Apparently it thought it was mating , >because it played all moves in 0 seconds. Be5 is played here in several variations. To be honest, such games let me doubt a bit in the integrity of the results. Anyone have the time to search for draw games in the SSDF database with maximum 6 pieces on the board and look if one side had a mate but drew? >I remember a long time ago that engines had 50-move rule problems due to TB >handling, but not problems of walking into repetition. > >Amir
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