Contract bridge is a popular trick-taking card game. Due to its bidding system, playing bridge entails an enormous amount of strategy and communication, and much effort is put into determining the most effective way to communicate with one's partner to find the best contract. This wiki will explore various aspects of the game, from bidding systems, to conventions, to playing strategies. Because there is no one correct system, we will try to catalog all major systems fairly. Users are welcome to create User: pages with their own systems.