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Each item will have its index as a value. To work with the Ti Tac Toe board more easily, you should define it as an array with 9 items. Since minimax evaluates every state of the game (hundreds of thousands), a near end state allows you to follow up with minimax’s recursive calls easier (9).įor the following figure, assume the AI is X and the human player is O. Minimax in Codeįor this tutorial you will be working on a near end state of the game which is shown in figure 2 below. To completely grasp the Minimax’s thought process, let’s implement it in code and see it in action in the following two sections. If you are new to the concept of recursion, I recommend watching this video from Harvard’s CS50.
![tic tac toe make your own tic tac toe make your own](https://i1.wp.com/yourdiyfamily.com/wp-content/uploads/2015/02/make-your-own-tic-tac-toe-game.jpg)
![tic tac toe make your own tic tac toe make your own](https://i.pinimg.com/736x/c7/28/a8/c728a813036230dac9264b4613f017d4--general-conference-tic-tac-toe.jpg)
Once in a terminal state, the AI will assign an arbitrary positive score (+10) for a win, a negative score (-10) for a loss, or a neutral score (0) for a tie.Īt the same time, the algorithm evaluates the moves that lead to a terminal state based on the players’ turn. It keeps playing ahead until it reaches a terminal arrangement of the board ( terminal state) resulting in a tie, a win, or a loss. Like a professional chess player, this algorithm sees a few steps ahead and puts itself in the shoes of its opponent. So if you are going through a similar journey, I would like to introduce you to the Minimax algorithm.
![tic tac toe make your own tic tac toe make your own](https://cdn.diyncrafts.com/wp-content/uploads/2016/03/25-tic-tac-toe.jpg)
![tic tac toe make your own tic tac toe make your own](https://i.ytimg.com/vi/mppzzMqOpa4/maxresdefault.jpg)
I struggled for hours scrolling through tutorials, watching videos, and banging my head on the desk trying to build an unbeatable Tic Tac Toe game with a reliable Artificial Intelligence.
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