 The most vital question when dealing with semi-complete and semi-consistent stages of the system is the question of its evaluation.To this end, Katsenelinboigen elaborated his structure of values, using the game of chess as a model.According to Katsenelinboigen's predispositioning theory, in the chess game pieces are evaluated from two basic points of view – their weight in a given position on the chessboard and their weight independent to any particular position.