spirit_66: Analyzing your played games with GNU is indeed an efficient way to catch the cheaters, but since it is not that rare even for casual players to play one BG game close to perfection you need to be a little more quantitative :
>BG games are analysed by GNU
How many games ?
>and one can see that ones opponent didn't make any mistake
Didn't make any mistake greater than what threshold ? GNU doesn't color mistakes lower than a certain threshold.
> and what if this happens again and again???
How many times ?
E.g. I would certainly take an aggregate error rate below 1 (Snowie) or 2 (GNU) based on two or three consecutive seven-pointers as an evidence for bot cheating.
(Cacher) Si vous cliquez sur le pseudo d'une personne puis sur Parties finies, vous aurez la liste des parties qui ont été terminées, puis cliquez sur le nom du jeu pour avoir un résumé de toutes ces parties, et cliquez encore sur le nom de jeu et vous aurez une partie que vous pourrez voir et analyser. (Servant) (Montrer toutes les astuces)