The Art of the Mental Gym: Rediscovering Amusements in Mathematics
The request for a "full feature" related to likely refers to the seminal 1917 book by Henry Ernest Dudeney , one of the most famous puzzle creators in history.
Dudeney, often compared to his contemporary , believed that every intelligent individual solves puzzles daily, whether they realize it or not. His goal was to make this process conscious and joyful. He warned readers that his puzzles were intentionally mixed in difficulty; a simple-looking problem might hide a "subtle pitfall" designed to catch the over-confident solver. The Architecture of the Book
Amusements in Mathematics (Dover Recreational Math) - Amazon.com
Here is a feature draft exploring the legacy, structure, and wit of this classic work.