Quantum Enigma 006: The Train Challenge

Institut quantique recently uploaded its 6th Quantum Enigma : The Train Challenge.

You are on a train with your friend Bob, who is another carriage. As soon as the train starts moving, you realize that it’s caught in an infinite loop and isn’t heading towards your destination. To get out of the loop, you’ll need to find a strategy to win a coin toss thrown randomly by Kettu, with no way of communicating with your friend Bob.