A zero-sum game is a situation in which one person or group can win something only by causing another person or group to lose it
. In game theory and economic theory, a zero-sum game is a mathematical representation of a situation that involves two sides, where the result is an advantage for one side and an equivalent loss for the other
. In a two-player zero-sum game, whatever one player wins, the other loses, and no wealth is created or destroyed
. Examples of zero-sum games include dividing up a budget, options and futures in financial markets, and games with perfect information such as chess and tic-tac-toe
