There are two players in the game (X and O) Players take turns until the game is over A player can claim a field if it is not already taken A turn ends when a player claims a field A player wins if they claim all the fields in a row, column or diagonal A game is over if a player wins A game is over when all fields are taken Build the business logic for a game of tic tac toe. It should be easy to implement a working game of tic tac toe by combining your code with any user interface, whether web or command line.
Screenshot game
