Game of Nine

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Uploaded by on Sep 8, 2011

Here is a game for you to play and investigate. Is there a winning strategy?

Each player takes it in turns to pick a number, the first to pick three numbers that add up to 15 wins.

With this simulation you don't even need a friend! http://gammahoo.de/gameofnine
Thanks to GammahooX for making it.

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Education

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Standard YouTube License

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  • Should be a draw with perfect play. There is a 3x3 magic square that sums to 15:

    618

    753

    294

    To win, your three numbers must be a row, diagonal, or column of this magic square. This is equivalent to winning a game of Tic-Tac-Toe. As we all know, that ends in a draw unless you mess up, regardless of who goes first. So there is no winning strategy here.

  • Suggestion: You can simplify it to a tic tac toe game, just put the numbers in this positions:

    6 1 8

    7 5 3

    2 9 4

    (Wow... if I had known this when I programmed the tic tac toe game in my early years, I could have used a lot fewer if's)

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All Comments (95)

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  • Lol, Beethoven can't hear a thing! :-D See what you did there... ;-)

  • nice game nice sollution. i wish i had found your channel earlier. but of course i subscribe now

  • @lzrdking5 Use the winning strategy for tic-tac-toe.it is better if you go first.

  • That Beethoven joke is the best joke that you've told in one of your videos.

  • its funny cuz he's deaf

  • You guys should tell him that beethoven is deaf. or beethoven was just too shy.

  • easy 4 times tables

  • Magic square, so start with 5 each time.

  • "Can't hear a thing." LOL.

    You, my friend, are a riot!

  • Just checking out your channel. Its loaded with awesome (educational+funny) videos. Subscribed!

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