Our whole life depends on the functioning of the brain. And the more different tasks we set for ourselves, the better it works. In the new training book from best-selling psychological author Viktor Sheinov, you will find many tasks to develop creative and practical thinking, intelligence and even riddles - they also help develop thinking abilities! There are both simple and very complex tasks here. Will you be able to solve them all without looking at the answers? Engage your whole family, and it will bring you not only mental benefits, but also a lot of pleasant emotions!