Tic Tac Toe

The object of Tic Tac Toe is to get three in a row. You play on a three by three game board. Players can choose their marks but traditionally the first player is known as 'X' and the second is 'O'. Players alternate placing 'X's and 'O's on the game board until either opponent has three in a row or all nine squares are filled.

To play the command line game:

1. Clone repository
2. If not already installed, install requirements with bundle install
3. Once in the root directory of the project, run application with ruby lib/run.rb

To run tests:

1. Once in the root directory of the project, run tests with rspec

Improvements made:

• Test suite:
• Overall structure of program
• The computer player is now unbeatable via 'Negamax' algorithm - by using recursion, the algorithm goes through all possible available spaces until an end state is reached (a game that results in a win or a draw) - it then chooses the move with the highest score (scores can be 0 for a draw, 1 for a win or -1 for a loss).
• Extracts the console so implementing another UI is possible.
• Enhances user experience through better messaging, including when users enter invalid input.

New features:

• Users can choose a game mode - human vs human, computer vs computer and human vs computer:

• Users can choose the mark they would like to play with:

• Users can choose which player goes first: