You play nine simultaneous games of noughts and crosses! But your goal is to win the “meta-game.” The meta-game is the three-by-three board made up of the nine games you are playing. To win the meta-game, you must be the first to win a line of games, just like winning an ordinary noughts-and-crosses game — but nine times harder.
Enjoy your challenge! If you want to play ultimate noughts and crosses on a real board, you can play on a tic-tac-ku set. Traditionalists may still prefer to play with pencil and paper.