A combination of memory, questioning and deductive reasoning to decipher your opponent's hidden code in order to win the game. The hidden codes consist of a colored lock and a numbered key.These codes are used to open the chamber hidden beneath the Million Fortress Knights Battalion. Each Knight (player) knows only one part of the code (a colored lock and a numbered key). By asking questions and making inferences from the answered received, they are tasked with solving the code of each and every other player.