Large Tic Tac Toe Tactics Number 1

Logic Level 4

You're playing a large Tic Tac Toe, with 5 in a row to win. It's your turn as \(\color{blue} O \).

Let \(A\) denote the least number of moves (for you to make) to win.

Let \(B\) denote the number of possible initial point(s) (for you to make) such that you can win in \(A\) moves.

Find the value of \(10B + A\).

Assume the player \(\color{red} X\) makes all the best possible moves to stay in the game (for as long as possible).

Screenshot made from the app RenjuWorld. No copyright infringement intended.

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