# 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
ttt game is responsible for this. Looking at the definition is_over it checks to see if the board is full and also if either player 1 or 2 won based on the x's and o's. If this happens then the game is over. 

### Determining which actions are available at a particular state
Again, this is ttt game. Under the definition of get_actions it returns a list of indices of empty spaces. It checks the board and sees the spaces that are empty which then shows possible actions for the player. 

### Showing the board
ttt view is respoinsible for this one. it has a definition that says print_board. It divides the board into 3 rows of 3 and after each row it prints a divider.

### Choosing which action to play on a turn
If we are playing with just humans which at this point we are, ttt human player is responsible. choose_action gets the list of available actions and then prompts the human to choose an action.


## 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       |   |         |   |   

### 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?