Play a game of Tic Tac Toe with Giga if you dare. Click the green flag first, then "Start Game" button to begin. When it is your turn: move your mouse pointer into an empty section and click.
Thanks to the CS Unplugged curriculum for providing the unbeatable logic Giga uses to remain undefeated. http://csunplugged.org/wp-content/uploads/2014/12/intelligentpaper.pdf
