TuxMath's question lists are created in mathcards.c/h. However, as currently implemented there can only be a single instance of mathcards running, which makes it impossible for the server to handle multiple games in the LAN version. For this task, make mathcards "thread-safe" so that multiple instances can safely run. Hint - each instance should have all its variables encapsulated within a struct, and the mathcards functions used by the game will need another argument to identify the correct mathcards instance. (Perhaps this task is "really hard")