In [[chess]], the opportunity cost of a weak move is the loss in [[tempo (chess)|tempo]] that results. Either side can be on the verge of [[checkmate]] and the side which loses a tempo falls to defeat. | In [[chess]], the opportunity cost of a weak move is the loss in [[tempo (chess)|tempo]] that results. Either side can be on the verge of [[checkmate]] and the side which loses a tempo falls to defeat. |