400+ tasks in entertaining mathematics. Profi. Kuzin S.L.

The book contains both tasks that will help prepare for mathematical Olympiads, and a large number of tasks that develop logical thinking, and simply interesting. Cross-cuts, sea battle, checkers, chess, backgammon, puzzles and tasks with matches, logical tests-far from all topics that can be found on the pages of this book.

is designed for children 9-13 years old and adults who want to support their intellectual tone.