Noughts and Crosses, or Tic Tac Toe, is a very old game. There is some debate among historians as to when it first began (ancient Egypt or ancient Rome) and what was originally used to make the board and pieces. (It's suggested that it was four sticks, pebbles, and coins.) As it evolved, it became a game of unity between Christian and Jewish children.
The X represented Christianity, as it came from chi. (The Greek letters for Christos, chi (looks like an X) and rho (looks like a P), is an early symbol for Christianity and for Christ Himself. Emperor Constantine is likely responsible for crafting the letters together.) The o or 0 is a kikel, a circle in Yiddish. Many Jewish immigrants used an O rather than an X as their signature in the early days of Ellis Island. The 0 is also known as a nought. The name tic tac toe wasn't given until the 20th century.
The object of the game is to get three of your symbols in a row. Players take turns selecting one of the nine squares. Statistically, the player who goes first has the greatest chance of winning. Marking in a corner first is considered the best move.
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