UEFA Euro 2012 Final the reportedly unpredictable Adidas Jabulani used at the 2010 World Cup. Pedro Proença, representing the Portuguese Football Federation, was chosen by UEFA as the official referee of the final. He first became an international referee in 2003, and the same year in June, Proença officiated an 2003 Intertoto Cup first round match between Žalgiris and Örgryte. Proença had previously been in charge of two UEFA finals, the 2004 UEFA Under-19 Championship Final between Turkey and Spain, and the 2012 UEFA Champions League Final between Chelsea and Bayern Munich. He has also refereed nine other Champions League matches, and 18 UEFA
Quantum refereed game refereed game consists of an n-turn referee along with functions formula_17 that maps each measurement output formula_18 to Alice's and Bob's pay-off. Individual quantum refereed games may place specific restrictions on strategies Alice and Bob can choose from. For example, in nonlocal games and pseudo-telepathy games, Alice and Bob are allowed to share entanglement but are forbidden from communicating. In general, such restrictions may not apply in quantum refereed games. Similar to a classical zero-sum game, a zero-sum quantum refereed game is a quantum refereed game with the additional constraint formula_19. It is natural to assume Alice and Bob play