The three chess pieces: the bishop, the horse and the tower.

The bishop is a man, the horse is an animal and the tower is a place. At the four extremities of the chess board stands the tower as a fortress feature fencing the horses and guaranteeing the security to the bishops besides the king and queen.
The tower may represent the woman covered with chastity, you cannot see her but the humble people woman is there on the board, inside the tower. Although as a woman who uses uniform to work in the offices, where it's important to her to be recognized just as a part of it, indeed a piece of its working system. This uniformed tower can either go left or right as many squares she wants.
The horse figure implies the horseman, someone who can ride on it after having tamed it. The horseman is some sort of a gentleman. He has been represented by a figure although this time not by a fixed model as in the case of the tower, or else by the most speedy animal. The human would be on the horse when he may need it, otherwise he's the player but not chained at the horse speed.
The horse has been serving the humans because of its own grandeur while the horseman is taking a noble attitude in recognizing the animal's value and utility. The horse figure steps three squares forward and then one aside either to the right or the left, just as a car may be turning right or left, as the case.
Eventually the bishop has his own natural form characterized by his religious uniform. Maybe he was brought by a horse in the king and queen's domain well protected by the tower wall. So each one of these rulers had a bishop by either side. The bishop movings on the board are possible just in diagonal directions stating the bishop's decision of going from one side to the other, meaning from the material presence until the spiritual existence or vice-versa.
One bishop is over the black square and the other is over the white square, that happens at the both sides of the board, to the both teams, so one bishop slides as many black squares he wishes even forward or backwards while the other one may slip only on the white squares as much he may need.
They're likewise the old legend of the two personal angels of a person, one letting things go while the other knows how to restrain them.