Game theory: Let's start with a very simple game: Tic Tac Toe

An area of mathematics science is called game theory. There are rules, options to act, win- and lose situations.

The most simple analysis about a game is Tic-Tac-Toe. There are two players, 3*3 fields and every player knows everything about the advance of the game.

If player A has 2 signs in one raw, You know exactly where player B will place his next sign. Game theory makes in this case a list of possible moves from side B, and for every possible move from side B a list of possible moves from side A and so on. All but one move are creating a lose situation for player B, so it is logical that he will do the only move not creating a lose situation.

lose	lose	lose
lose	X	lose
O	O	prevent lose