Tic Tac Toe – Creating Unbeatable AI with Minimax Algorithm

Wouldn't it be better to just use a magic square[1]?

Is minimax more efficient or is the author simply using the game to describe the concept behind the algorithm?

[1]https://en.wikipedia.org/wiki/Magic_square

Magic square could be used there and it might be even faster but the goal of this article was to show the underlying Minimax algorithm.