Follow-up questions:

* What are the main objects?

* How do the main objects interact with each other?

* Which object or objects own the current game state information?

* Implement the method to move a piece to another position on the board. method must communicate if the move is legal or not.

* How do you test the move piece method?

Chessboard: contains a matrix of chess pieces objects

Player: contains a list of references to his/her active chesspieces

Chess piece: contanis color or player, and what type of piece is it (tower, horse...)

boolean canMove(pieceType, start_x_pos, end_x_pos, start_y_pos, end_y_pos){

if (type equals horse){

canMoveHorse (pieceType, start_x_pos, end_x_pos, start_y_pos, end_y_pos);

}

else if (type equals horse){...}

...

}

test1: the piece is at the indicated position

test2: the piece has the same color at before it was moved

test3: if there was another piece at the end position, now it has been removed from the chessboard and from its player's list

test4: if it is a queen, tower, ... check that before the movement there wasn't any other piece in the path

test5: check that the other pieces are at the same places where they were before the movement