Dr. Gareth Moore (B.Sc (Hons) M.Phil Ph.D) is the internationally bestselling author of a wide range of brain-training and puzzle books for both children and adults, including Anti-stress Puzzles, Ultimate Dot to Dot, Brain Games for Clever Kids, Lateral Logic, Extreme Mazes, and The Ordinance Survey Puzzle Book. His books have sold over a million copies in the UK alone and have been published in 29 different languages. He is also the creator of online brain-training site BrainedUp.com and runs the daily puzzle site PuzzleMix.com. Simon Abbott has been illustrating children's books, games, and stationery for more than 15 years. He specializes in bold colors and delightful characters of all kinds and describes his work as fun, fresh, and happy. His easy style has instant appeal and helps to communicate complex ideas and concepts in a flash. Whether he is drawing playground fun, astronauts, dinosaurs, or monkeys swinging through trees, his art is always engaging and is guaranteed to make children smile. Simon lives and works in Suffolk, UK, with his partner and their 3 boys. When he hasn't got a pen or paintbrush in his hand, he enjoys music, festivals, running, and ice cream.