Author: Harald Faber
Date: 13:10:43 12/06/02
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On December 06, 2002 at 13:05:22, Tony Hedlund wrote: >On December 06, 2002 at 00:53:51, Harald Faber wrote: > >>On December 05, 2002 at 03:58:01, Tony Hedlund wrote: >> >>>Take a look at game 21. Shredder had a winning endgame, both programs showed >>>mate in 9. But suddenly the game ended in a repetition draw! A bug in Shredder? >>>Tony >> >>- This behaviour has been noticed with several engines before. >>- It has ALWAYS been caused by incomplete tablebases. >>- In this case AFAIK it is caused by the incomplete "Fritz endgame turbo". >>- That is the reason why I call this "Fritz endgame turbo" a piece of shit. >>- The question arises: WHY does SSDF use the Fritz endgame turbo? IIRC SSDF only >>tests chess programs kind of "out of the box". The Fritz endgame turbo is no >>part of Shredder 6/7 nor any other CB chess program. Why do you use it? > >You provide the answer yourself in your last sentence. > >>- Why aren't the programs tested by using their provided package? So when there >>are some 4- and 5-man tbs on the released CD, install them for that specific >>program. > >It's done. Haven't you written to test with the Fritz endgame turbo? This is NO part of any ChessBase playing program. >>- The problem with incomplete tbs is well known, also for you. > >I wasn't aware that Shredder had this bug. Yes, I agree with Bob that it *IS* a >program bug. This bug happens not only to Shredder. Several (all?) CB-engines show the same behaviour and I am not sure whether the ChessPartner programs also behave like that. Anyway this - bug - is known since ages and has been reported here and on other computer chess boards frequently.
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