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Tic-tac-toe (American English), noughts and crosses (Commonwealth English), or Xs and Os (Canadian or Irish English) is a paper-and-pencil game for two players who take turns marking the spaces in a three-by-three grid with X or O. The player who succeeds in placing three of their marks in a horizontal, vertical, or diagonal row first is the ...
Ultimate tic-tac-toe (also known as UTT, super tic-tac-toe, meta tic-tac-toe, (tic-tac-toe)² or Ultimate Noughts and Crosses [1]) is a board game composed of nine tic-tac-toe boards arranged in a 3 × 3 grid. [2] [3] Players take turns playing on the smaller tic-tac-toe boards until one of them wins on the larger board. Compared to traditional ...
Tic-tac-toe, also called noughts and crosses and many other names, is a paper and pencil game between two players, O and X, who alternate in marking the spaces in a 3×3 board. A player wins by getting three of their own marks in a horizontal, vertical or diagonal row.
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The matchboxes used by Michie each represented a single possible layout of a noughts and crosses grid. When the computer first played, it would randomly choose moves based on the current layout. As it played more games, through a reinforcement loop, it disqualified strategies that led to losing games, and supplemented strategies that led to ...
[2] [3] On the updated version known as Test Card J (including widescreen and HD versions), the X on the noughts-and-crosses board is an indicator for aligning the centre of the screen. The blocks of colour on the sides would cause the picture to tear horizontally if the sync circuits were not adjusted properly. [3]
An arbitrary game tree that has been fully colored. With a complete game tree, it is possible to "solve" the game – that is to say, find a sequence of moves that either the first or second player can follow that will guarantee the best possible outcome for that player (usually a win or a tie).
Noughts and Crosses is an alternative name for the game of Tic-tac-toe. Noughts and Crosses may also refer to: Noughts & Crosses (novel series), by Malorie Blackman; Noughts and Crosses, Australian television game show; Noughts + Crosses, British television adaptation of the Malorie Blackman novel