Check your speedTic Tac Toe Plus is a version of the classic game for one or two players, for Mac OS X.
Tic Tac Toe Plus can play a standard game of tic tac toe or a variation inspired by Trilite, a game by John Mauro.
In Plus mode, only each player's three most recent moves are in play, i.e. when a player makes their fourth move, their first move is removed, and that square is re-opened for possible selection by the opposing player. This method makes gameplay more interesting and removes the possibility of a stalemate.
The computer player has a complete set of strategies for standard tic tac toe, but only two Plus-mode specific strategies. Because the computer player is weak in Plus mode, it is most fun to play against a human player.
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