help needed for a friend! :)

[GOTO10]

BashBedlam - can you tell me if you have run the code and if so how far in the game did you get!
are the errors making the game not run! ?

The game can't be played in its current state. The first move in the game results in the error message BashBedlam pointed out. When that first call to the flip() function occurs, the variables row, col, player, playerOppposite all still have the empty string values they are assigned in lines 5-8.