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The most attractive Tic Tac Toe app is here.
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♥ Many themes available
♥ Simple and fun
Tic-tac-toe, also called 'wick wack woe' in some Asian countries and 'noughts and crosses' in the UK, Australia, New Zealand, South Africa, India and the rest of the British Commonwealth countries, is a game for two players, X and O, who take turns marking the spaces in a 3×3 grid. The X player usually goes first. The player who succeeds in placing three respective marks in a horizontal, vertical, or diagonal row wins the game.
Despite its apparent simplicity, Tic-tac-toe requires detailed analysis to determine even some elementary combinatory facts, the most interesting of which are the number of possible games and the number of possible positions. A position is merely a state of the board, while a game usually refers to the way a terminal position is obtained.