Before you is a unique book-simulator for the development of intellectual abilities, the principle of operation of which is radically different from all analogues existing today. With the help of an intellectual simulator based on Schulte tables, you activate and develop your attention, namely, attention, the level of its training and current state, the success of any business depends 90% on the success of any business. The intelligent simulator based on Schulte tables is surprisingly simple and safe, training on it requires a minimum of time, and the results will shock you and all your friends.