This is Modified Tic Tac Toe game in which we change one rule which guarantees that first player always wins.
We aim to Modifying one rule (except fundamental rules) of a classical Tic Tac Toe game which can guarantee that the the player who plays first always wins. [The Question]
Both the players can swap their marks with other player’s marks in their respective turns (considered as a move) only once in a game. This swap will be considered as a move.
A First Order Logic (FOL) proof of the proposed rule change is given and it is proved that the proposed rule guarantees the win of the first player.