I'm still bored.

Level 2

My friend and I are playing Tic - tac - toe on the board above. If this game is played optimally, who is going to win?

I (The person who plays first) My friend (The person who plays second) It will be a draw.

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1 solution

Jeffrey Zhou
Jun 25, 2018

You will always be able to create a 1-2-1 chain, which your friend will be unable to stop.

Start by playing on a 1. If your friend plays on either a 3, a 2 that is not adjacent to your 1, or another 1, you play on the 2 next to your 1 furthest from where they played, forcing him to block. Then, you play on the 1, creating the chain. If instead your friend opens on a 2 adjacent to your 1:

Sorry if this was confusing, I couldn't think of any better way to explain it.

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