A book is collection of entertaining logical tasks, that differentiate both on the type of the construction and on the level of complication. However they are united by that all of them are enthralling and will cause undoubted interest of reader. They are sent to development of attention, memory, flexibility of mind, shrewdness and quick wits, will help both to know something a new and intellectually поупражняться, and also - to occupy itself in a clock leisure and with a benefit to have fun. A book is addressed to the schoolchildren and their parents, students, teachers, teachers and all, who likes to decide logical tasks and puzzles, interested in expansion of own range of interests and development of skills of the non-standard thinking.An Author-compiler is a doctor of philosophical sciences, professor of department of philosophy of the Moscow pedagogical state university, teacher of philosophy and logicians. Materials of book with unchanging success are used by an author in long-term teaching practice.