Over 150 puzzles to relax and unwind with. All you need is a pen (and a cup of tea) to get started. Mum’s Book of Puzzles: Relax and Unwind with over 150 Puzzles to Solve. Author:Moore, Dr Gareth. In 2002, World of Books was founded on an ethos to do good, protect the planet, and support charities by enabling more goods to be reused.