This brain-bending puzzle comes from the exploratorium's Brain Explorer,Ī book available for purchase through our online store. You may not win, but at least you'll tie. and banging my head on the desk trying to build an unbeatable Tic Tac Toe. If you always pay attention and look ahead, you'll never lose a game of Tic-Tac-Toe. So I designed a GUI Tic Tac Toe game in Java that works if two players were to. You are forced to play in a particular square or lose the game. If the computer gets two Os in a row, you have to put your next X in the last empty square in that row, or the computer will win. You also have to watch where the computer puts its O. Where's the best place for your next X? You look at the empty squares and decide which ones are good choiceswhich ones might let you make three Xs in a row. The other part is trying to figure out how to stop the computer from getting three Os in a row.Īfter you put an X in a square, you start looking ahead. Part of your strategy is trying to figure out how to get three Xs in a row. Strategy means figuring out what you need to do to win. To beat the computer (or at least tie), you need to make use of a little bit of strategy. If no player has 3 marks in a row, the game ends in a tie. When all 9 squares are full, the game is over. The first player to get 3 of her marks in a row (up, down, across, or diagonally) is the winner.Ĥ. Players take turns putting their marks in empty squares.ģ. You are X, your friend (or the computer in this case) is O. The game is played on a grid that's 3 squares by 3 squares.Ģ. Tic-Tac -Toe (along with a lot of other games) involves looking ahead and trying to figure out what the person playing against you might do next.ġ. But if you really wrap your brain around it, you'll discover that Tic-Tac-Toe isn't quite as simple as you think! It's a really simple game, right? That's what most people think. Contact me or open an issue to discuss potential changes/additions.You probably already know how to play Tic-Tac-Toe. Your contributions are very welcome! The best thing you could possibly do is break this code and then let me know about it. Whenever you save a file, the tests will run again and output the results to the console.īe sure to check out the documentation for Mocha and Chai to learn more about this testing suite. If you want to leave the tests running while you modify the code, run npm run test-watch.
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