The Man with the Umbrella - S1-E3
Plot hole: With all the cameras and guards watching, there's no way anyone would be able to use a cigarette lighter to help them pass the game.
Suggested correction: The guards do not care about cheating as long as it doesn't break the rules of the game or challenge the integrity of the games. Using a lighter was not explicitly forbidden by the rules, so even if they saw it (which is not guaranteed), the guards wouldn't step in.





