The Ordnance Survey Puzzle Book by Gareth Moore is a challenging and engaging book that puts your wits to the test against Britain’s greatest map makers. Published by Orion Publishing Group, this book features a range of puzzles, quizzes, and activities related to maps and geography. With 240 pages of brain-teasing challenges, this book is perfect for anyone who loves a good puzzle or enjoys learning about the UK’s topography. The compact size of 8.8 inches in length and 5.9 inches in width makes it a convenient and portable book for on-the-go entertainment.