Bill and Alex play a game of tick-tack-toe. In this game, the players try to get three circles or three crosses in a row (horizontal, vertical, or diagonal).
They follow the following rules:
- A player always tries to win: if a player can place his own symbol (X or O) in a row which already contains two of his own symbols, he will do so.
- A player always tries to avoid that his opponent wins: if a player can place his own symbol (X or O) in a row which already contains two of the symbols of his opponent, he will do so.
Of course, the first rule has precedence over the second rule, because the game can be won in this way.
In the game shown on the right, 6 moves have been done. Bill plays with crosses (X) and Alex plays with circles (0). However, we don't know who started the game.
Agree about not being the best game. Not sure how they would ever get there if they knew how to play. If I go first, either I will win or no one will. and vice versa.
