Mensa's Most Difficult Logic Problems

Dr Gareth Moore is the author of over 250 bestselling international puzzle and brain-training titles from a wide range of publishers. His books are available in over 40 countries, with worldwide sales of over 5 million copies. His puzzles also appear in magazines and newspapers, and can be played online at the PuzzleMix website. He is also the creator of Brained Up, a cutting-edge brain training site that offers daily sessions to help you make the most of your brain, and is a director of the UK Puzzle Association as well as a former board member of the World Puzzle Federation. He works with a co-writer, Laura Jayne Ayres, on his murder mystery-themed puzzle books.

• 200 difficult puzzles of a variety of different types focussing on logic puzzles and reasoning. Questions include popular puzzles such as Sudoku and nonograms, as well as more diverse word puzzles that will test your ability to analyse and infer to their limits. Puzzle artworks and full-colour illustrations are included throughout.