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Tic-tac-toe
Connect three · computer or two players
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You play O; the computer plays X. You go first. Leaving this screen resets the game.
You (O) to play0 moves
How to play
Computer play is the default and runs locally without an API key. OX searches outcomes; Gomoku uses attack and defense, while Go is a basic practice opponent prioritizing captures and liberties. Undo removes both the computer reply and your move. In Go, the computer accepts your pass to end play and show the area estimate.
OX is tic-tac-toe. O starts. Take turns marking empty cells; connect three horizontally, vertically or diagonally to win.