Tic-tac-toe

From Wikipedia, the free encyclopedia

Tic-tac-toe, also spelled tick tack toe, and alternatively called noughts and crosses, hugs and kisses, and many other names, is a pencil-and-paper game for two players, O and X, who take turns marking the spaces in a 3×3 grid, usually X going first. The player who succeeds in placing three respective marks in a horizontal, vertical or diagonal row wins the game. This game is won by the first player, X:

Game of tic-tac-toe, won by X

Players soon discover that best play from both parties leads to a draw. Hence, tic-tac-toe is most often played by young children; when they have discovered an unbeatable strategy they move on to more sophisticated games such as dots and boxes or 12 Cell tic-tac-toe. This reputation for ease has led to casinos offering gamblers the chance to play tic-tac-toe against trained chickens—though the chicken is advised by a computer program.[1]

The first two plies of the game tree for tic-tac-toe
So, Tick Tech Told is unbeatable!!!!
Kelly is Awesome
Kelly is Awesome

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