Tic-tac-toe

Tic-tac-toe

A completed game of tic-tac-toe
Other names	Noughts and Crosses Xs and Os
Genres	Paper-and-pencil game
Players	2
Setup time	Minimal
Playing time	~1 minute
Chance	None
Skills	Strategy, tactics, observation

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 is the winner. It is a solved game, with a forced draw assuming best play from both players.