How to play
6 steps. Tap one when it's done.
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Top-right corner. Now X threatens the top row AND the right column at once. O can only block one, and X wins on the next move.
Tic-tac-toe is a draw if both players play right. Learn the handful of rules that make you unbeatable, then watch grown-ups get annoyed.
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Nothing sharp, nothing hot, nowhere far. Tell someone what you're up to, then go ahead and do it on your own.
6 steps. Tap one when it's done.
Top-right corner. Now X threatens the top row AND the right column at once. O can only block one, and X wins on the next move.
There are only a few thousand possible tic-tac-toe games, and every one has been worked out. Play the priority list in order, win, block, fork, defend, and the worst you can ever do is draw.