What could be more interesting and exciting than riddles, labyrinths and puzzles? After all, sometimes a simple task can lead you into a dead end and deprive you of peace for the whole day. But nevertheless, by racking your brains over such a difficulty and eventually coming to the right decision, you can get an amazing boost of energy and self-confidence! Puzzles by M.A. Gershenzon's works are varied and unusual - these are labyrinth drawings, optical illusions, riddles based on the origami principle, tricks, jokes, tasks for logic and attentiveness. Everyone will be able to find an interesting problem for themselves and come up with their own original solution! Try on the role of a cheerful artist or a know-it-all who has come up with your own riddles, find inconsistencies and errors in ordinary literary texts, and reflect on puzzles and tasks.