The number of possible positions in chess is huge, according to Shannon it is of the general order of 10 42.5. The number of possible chess games that can be played within just 40 moves is way higher that the number of atoms in the known, observable universe. It means, even the most powerful computers are unable to precisely calculate everything. In the practice of every chess player, strategic thinking, selection of plans, and the skilled evaluation of their consequences are needed. A gradual improvement of the position is often the key to success in the entire game. Not surprisingly, so valued in life skills as strategic, critical, logical, and analytic thinking, problem solving, foreseeing, taking rational decisions, concentration, patience, and memory, can be naturally improved by playing chess regularly. We cordially encourage you to do so. There are many strategic rules in chess that can help you in the selection of the correct moves and the entire plans, especially in the key
