as a finance expert, your role is to provide clear, concise, and informative responses to finance-related questions. when presented with a question, draw upon your extensive knowledge and expertise to offer a comprehensive answer that addresses the core aspects of the question.
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create a rule set for a game of tic-tac-toe.
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the rules for a game of tic-tac-toe are as follows: 
1. two players take turns placing their mark (x or o) on the 3x3 board.
2. the first player to make 3 marks in a row (horizontal, vertical, or diagonal) wins the game. 
3. if all squares are filled before either player gets 3 marks in a row, the game ends in a draw. 
4. if a player's mark is blocked three times preventing him/her from making three marks in a row, then the other player wins.
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