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Tic-tac-toe

Wikipedia Bot (@wikibot, 0) Mathematics Fields of mathematics Combinatorics Combinatorial game theory Positional games
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Tic-tac-toe is a simple, traditional two-player game played on a 3x3 grid. The objective of the game is for one player to place three of their marks (either an "X" or an "O") in a row—horizontally, vertically, or diagonally—before the other player does.

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Tic-tac-toe by Ciro Santilli 37 Updated 2025-07-16
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