While everyone believed that the change of phase derived from the decision to enforce a tabula rasa, they had noticed that an empty chessboard remains a chessboard. So the infrastructure still continued to exist even if the pieces and the pawns were absent. The white and the black squares were not all the same and their color would influence the whole course of the bishops, wherever they were. While the change of color would set the knights. And the lines that were no longer invisible went across the chessboard that had been emptied by the policy of negotiation. The banks of the river had transformed into stations connected as links of an iron chain. At that period the still rivers had received iron variations that had changed the evolution of the empty chessboard and the people had become the pieces, in a best case when they were not forced to move as pawns in an unknown homeland.