Also from a game theory point of view, it doesn't make much sense. Magnus would have nothing to win from such an encounter but a lot to lose. In his position I

Also from a game theory point of view, it doesn't make much sense. Magnus would have nothing to win from such an encounter but a lot to lose. In his position I would never take such a deal. Whether he is cheating or not, it doesn't make much sense for Hans either. Only one and unlikely outcome would be in his favor. Cheater or not, he is A LOT more likely to lose to the current best player in the world. He won't gain anything from it. If he is a cheater odds are even lower. If he is honest and loses it would be devastating. If he is a cheater, it is a lot better for him to not take the deal and deny any wrongdoing. With chess, at that level of play, you can't decide which player is better or worse by judging from a single game. Only the aggregate between many players playing between each other can tell you that - ELO system achieves that. So them sitting in a faraday cage naked after an X-ray and playing a single match would not tell much. If they played a whole lot of games against each other, it would more or less work but that is impractical and ridiculous.