Interface general
{
    private pair<int,int> intital_pos;
    private pair<int,int> final_pos;
    public movement(intital_pos,final_pos);
}

class rook implements general
{
	public movement(intital_pos,final_pos)
	{
		//Implementation
	}
}

class chessboard
{

	//Objects of classes like rook,queen;
	//rook rook1 = new rook();

}
//