The object of Noughts and Crosses is to get a winning line of three
Noughts or three Crosses in either a horizontal, vertical or diagonal
row. Each player takes it in turns to place their piece, a nought or a
cross, and whoever lines up 3 first wins!
If you want to see how the div's are working, you can open the log, which shows which div has been clicked (it can be seen by clicking CTRL+SHIFT+J when using Google Chrome).