Different subfields of AI (Robotics, Computer Vision, NLP, ML, etc) have been holding contests by defining a standard task and challenging researchers to do their best. Examples include the International Planning Competition, the DARPA Urban Challenge for robotic cars, the Robocup robotic soccer league, the TREC (Text Retrieval Conference), the PASCAL Visual Object Classes challenge, and contests in speech recognition and machine translation. Investigate three of these contests, and briefly describe the progress made over the years. To what extent have the contests advanced the state of the art in AI?

Design a class tictactoe that: holds the following information about the game: two-dimensional array (3 by 3), and winner. add additional variables as needed. includes the functions to perform the various operations on objects. for example, function to print the board, getting the move, checking if move is valid, determining if there is a winner after each move. add additional operations as needed. includes constructor(s). write the functions of the class, and write a program that uses the class. the program should declare an object of type tictactoe. the program will create the board and store it in the array. the program will allow two players to play the tic-tac-toe game. after every valid move update the array, check if there is a winner. if there is no winner and no tie, then print the board again to continue.