Trick Tac Toe

It's Tic Tac Toe- with a Twist! The rules are still about the same: get three of your piece in a row. However, you now have another choice on your move; you can now flip your opponents piece to become your own. If all spots do eventually get filled, keep flipping pieces until someone gets three in a row. You cannot change a piece back that was changed the turn before. Out of necessity, (certainly not because I wanted to,) there are 2 new rules. These are only here to prevent what could very quickly become a boring and unfair advantage: 1: You cannot flip a piece if you have already flipped a piece on your previous turn. you must place down at least 1 piece before being allowed to flip again. Example: O places a piece down at the top left. X flips that piece. O places a piece down in the middle. X cannot flip that piece; he flipped a piece on his previous turn. 2: You cannot flip a piece that was flipped by your opponent on a immediate previous turn. Example: O places a piece in the top