Matching pennies

This article is about the two-person game studied in game-theory. For the confidence trick, see coin-matching game. For other variants, see morra (game).
Heads Tails
Heads +1, −1 −1, +1
Tails −1, +1 +1, −1
Matching pennies

Matching pennies is a non-cooperative game studied in game theory. It is played between two players, Even and Odd. Each player has a penny and must secretly turn the penny to heads or tails. The players then reveal their choices simultaneously. If the pennies match (both heads or both tails), then Even wins and keeps both pennies. If the pennies do not match (one heads and one tails), then Odd wins and keeps both pennies.