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Subject: Some questions

Author: Harald Faber

Date: 21:53:51 12/05/02

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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?
- 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.
- The problem with incomplete tbs is well known, also for you. Why don't you
change your test setup to either complete, none or provided tbs?

OK, finally I have to admit that the conditions are equal for all engines
running under a CB-GUI... but anyway, games like this kind of falsify results.




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