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Project 4: Tic-Tac-Toe

Using Python, students will create a Tic-Tac-Toe game. This project has two parts:

  1. designing the game so that two users can play Tic-Tac-Toe against one another; and
  2. creating a Tic-Tac-Toe checker that will check the board to see if Xs or Os have won the game.

Overview

Tic-Tac-Toe is a game in which one player draws X's and another player draws O's inside a set of nine squares and each player tries to be the first to fill a row, column, or diagonal of squares with either X's or O's. We will be writing an interactive Tic-Tac-Toe program. At the end of each turn the computer will check to see if X's have won the game or if the O's have won the game.

Behavior

  • The program will prompt the user to enter their name and their opponent's name.
  • Whoever enters their name first will be playing as X's, and the other player will be O's.
  • The program will print an empty game board as a starting point.
  • The players will take turns inputting the row and column where they would like to place their mark.
  • If that spot is invalid or already taken, the program will ask again for a valid spot.
  • At the end of each player's turn the program will
    • check if that player has won.
    • print the updated game board.
  • If there are no more spots open and nobody has won the game, the program will print Tie game!.

Implementation Details

  • Use variables to store the user names for personalized prompts.
  • Create a game board represented as a list of lists, size 3 by 3. Note: This is a change from our earlier implementations of Tic-Tac-Toe. Why do you think this might be better?
  • Check for a winner horizontally, vertically, and on both diagonals.
  • Do not allow a user to overwrite a spot on the board where a play has already been made.