Re: [computer-go] KGS Tournaments: Cheating

[Evan Daniel <evanbd@xxxxxxxxx>]

On Mon, 7 Mar 2005 16:06:34 +0000, Stuart Yeates <syeates@xxxxxxxxxxxxxxxxx> wrote:
> On Mon, 7 Mar 2005 13:25:04 +0000, Nick Wedd <nick@xxxxxxxxxxxxxxxxx> wrote:
> 
> > Another proposal is that programs must play reproducibly.  Then, if
> > there is an accusation of cheating, the accused program can be asked to
> > reproduce the sequence of moves.  However, some programs don't play
> > reproducibly, and can't be forced to.
> 
> Surely this merely ensures that the cheater cheats reproducibly too?
> Unless the software is mass-market or open source and anyone can
> reproduce the game, move by move reproducibly doesn't seem to gain you
> much. Even then you'd need to restrict program authors to playing
> released versions, rather than the bleeding edge experimental
> versions.

I think a better fashion is to have copies of the code in use sent to
a third party or tournament organizer beforehand, and have them
reproduce the moves later if needed.  That prevents cheating the
second time around.  To account for time variations and the like, just
reproduce the game several times with slightly different times
available; the program is likely to produce the same move each time,
and should certainly be capable of producing the move on one of the
settings.  Requiring exact reproducibility is a pain, but "close
enough" should cover most cases.

Evan
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