Minimax with Alpha-Beta Pruning (2)

Following on from my attempt to make a practical minimax with alpha-beta pruning example available, Joshua S. Gilpatrick has simplified my Tic-Tac-Toe implentation to showcase the alpha-beta pruning more clearly and also added a graphical board. You might want to download his code or visit the permanent Tic-Tac-Toe page where both sets of code are available.