Magic Square © 1975 Creative Computing Soft.
A game similar to tic-tac-toe, except instead of placing X's and O's the player and computer alternate placing a unique number between 1 and 9 on the grid. The first player to make make a move which makes the sum of a row, column or diagonal not be 15 loses. In case of a tie a magic square is created.
Released in January 1975.