Tic tac toe

Let's play a game of tic-tac-toe. The current board state is empty, and it is your turn to begin the game. Please select a tic-tac-toe move by responding with a number 1-9, where each number corresponds to the grid cells as you would read them right to left and top to bottom:

1 2 3 4 5 6 7 8 9

Alright, I'll start by placing my mark in the center of the board. That's cell number 5.

1 2 3 4 X 6 7 8 9

Your turn!

I will select 2. The board is now

1 O 3 4 X 6 7 8 9

Great choice! Here's my next move: I'll place my mark in cell number 1.

X O 3 4 X 6 7 8 9

Your turn!

What would the best move in this situation be?

In this situation, a strategic move for you would be to place your mark in cell number 3. This move prevents me from creating a line on the top row in my next turn. Here's how the board would look:

X O O 4 X 6 7 8 9

Now it's my turn.