Names for the number 0 in English the first recorded usage of the word "love" to mean "no score" is by Hoyle in 1742 (OED, 2nd Edition). BBC Radio 5 Live has broadcast spin-off versions of its football phone-in 6-0-6 (""six-oh-six"") focused on cricket and tennis, branded as "6-Duck-6" and "6-Love-6" respectively, in the summer months during the soccer off-season. Another name for 0 that is used in sports is "nil". This is derived from the Latin word "nihil", which means "nothing". Although common in British English, in football results and the like, it is only used infrequently in U.S. English. The British "nil" is not slang,
Zero-sum game a situation in which the interacting parties' aggregate gains and losses can be less than or more than zero. A zero-sum game is also called a "strictly competitive" game while non-zero-sum games can be either competitive or non-competitive. Zero-sum games are most often solved with the minimax theorem which is closely related to linear programming duality, or with Nash equilibrium. The zero-sum property (if one gains, another loses) means that any result of a zero-sum situation is Pareto optimal. Generally, any game where all strategies are Pareto optimal is called a conflict game. Zero-sum games are a specific example of