About the book: 2007 / The book presents 30 entertaining problems aimed at developing a child’s logic, training attention and the ability to think outside the box. The tasks are given in the form of mysterious detective stories that are revealed by detective Buslya. To help the great detective, you need to carefully read the text or find the answer in the picture. Such a game will not only captivate the child, but will also be an excellent development of his mental abilities.Addressed to children 7-12 years old.