Tic Tac Toe for Pc

1. If X plays a center opening move, O should take the corner, and then follow the above list of priorities, mainly paying attention to block forks.

2. If X plays corner opening move (best move for them), O should take center, and then an edge, forcing X to block in the next move.

3. However, if X is not a perfect player and has played a corner and then an edge, O should not play the opposite edge as its second move, because then X is not forced to block in the next move and can fork.

4. If O responds with a center mark (best move for them), a perfect X player will take the corner opposite the original.

5. However, if O plays a corner as its second move, a perfect X player will mark the remaining corner, blocking O's 3-in-a-row and making their own fork.

6. If X plays edge opening move, O should take center, and then follow the above list of priorities, mainly paying attention to block forks.

7. If O responds with an edge mark, X is guaranteed to win, by taking center, then O can only take the corner opposite the corner which X plays first.

8. When both X and O are perfect players and X chooses to start by marking a corner, O takes the center, and X takes the corner opposite the original.

9. If O responds with a corner mark, X is guaranteed to win, by simply taking any of the other two corners and then the last, a fork.

10. In that case, O is free to choose any edge as its second move.

11. (since when X takes the third corner, O can only take the position between the two X's.

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