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I've qualified things a bit more: this applies to two-player deterministic perfect-information turn-based games. All three properties are needed. For example, the game "first player to throw heads", is turn-based, and perfect-information, but non-deterministic, and is neither first player, second player or a draw. And so on, for the other obvious case of imperfect knowledge, as well as most non-artificial situations in real life. -- The Anome (talk) 15:33, 26 June 2016 (UTC)Reply