That was never proven.
yoghurt gate
True. But as much of a Korchnoi as i am. I think he was a little bit paranoid. But considering he was fighting Karpov, the KGB, and his family being held. I cant blame him for overthinking things.
if you think about it, if they banned the yoghurt, then next up would probably have been tea leaves.
ever noticed those hearts and flowers on your take away coffee. the technology has been around for a while.
They wrote moves on the blueberries in the yogurt duh.
and Karpov deciphered them with hi tech contacts ? aha!
how do you reckon Karpovs team managed to encode move suggestions into his yoghurt to help him beat Korchnoi in 1978 ?