After a gentle ‘warm-up’ section, the puzzles and tests get progressively more challenging over the course of the book. There is a hints section for readers who get stuck, as well as a complete set of answers for every test at the back of the book.
After a gentle ‘warm-up’ section, the puzzles and tests get progressively more challenging over the course of the book. There is a hints section for readers who get stuck, as well as a complete set of answers for every test at the back of the book.