# Tic Tac Toe notes

## Checkpoint 1 Notes

Which class is responsible for each of the following behaviors?
For each, explain how the behavior is accomplished.

### Checking to see whether the game is over
TTTGame()
It checks if the board if full or player x won or player 0 won. 

### Determining which actions are available at a particular state
TTTGame()
It check the location of the empty spot of the board. 

### Showing the board
TTTView
Each group of three items creats one row to print, each item is seperated by |, 
then each rwo is seperated by divider

### Choosing which action to play on a turn
TTTview() and TTTPlayer()
Get the list of avaiable actions, then ask the user to choose wihch action he wants to take. 


## Checkpoint 2 Notes

### TTT Strategy

For each of the following board states, if you are playing as X
and it's your turn, which action would you take? Why?

   | O | O       |   | O       | X |       X | O |   
---+---+---   ---+---+---   ---+---+---   ---+---+---
 X | X |         | X |       X | O | O       |   |   
---+---+---   ---+---+---   ---+---+---   ---+---+---
   |   |         |   | O       |   |         |   |   

6 for the first case becase I can win right away. 
6 for the second case becase I need to stop the other player winning. 
1 for the third case becase I have two possible winning senario with this choice. 
5 for the fourth case becase the other player is forced to put 9, then I will the next turn. 
### Initial game state

You can get the inital game state using game.get_initial_state(). 
What is the current and future reward for this state? What does this mean? 

reward is zero, it means that no one can win unless someone make a mistake.