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Tic-Tac-Toe variant played with all X's

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  • Tic-Tac-Toe variant played with all X's



    In Misère Tic-tac-toe, getting three-in-a-row means you lose.

    Here is a wonderfully named app version: Notakto

    Here is a scientific paper on the mathematics of the game: The Secrets of Notakto: Winning at X-onlyTic-Tac-Toe by Thane E. Plambeck, Greg Whitehead

    And below is part 2 of the Numberphile video. Note from the video description:
    Correction from Thane: The configuration with two X's, one in a corner and one in the middle, is a "b" and not a "b^2". It's at 5:24 in the video.


    Source
    The Hackmaster
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