Dr. Gareth Moore is the internationally best-selling 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, and Extreme Mazes. His books have sold over a million copies in the UK alone, and have been published in twenty-nine different languages. He is also the creator of the online brain-training site BrainedUp.com, and runs the daily puzzle site PuzzleMix.com.