Dr Gareth Moore is the author of a wide range of brain-training and puzzle books for both children and adults, including The Little Book of Puzzles, The Kids' Book of Crosswords, The Brain Workout, Train the Brain and a wide range of other books. He also writes the monthly magazine Sudoku Xtra and runs the puzzle website www.puzzlemix.com. He gained his Ph.D at the University of Cambridge, UK, where he worked on machine intelligence. Chris grew up somewhere between the canals of south-west France, the Swiss mountains and England's Essex estuary. The youngest of four children (the little brother role he still embraces in adulthood), Chris spent the majority of his education drawing on his friends' schoolbooks and was brought up on a diet of Tom & Jerry, Swiss chocolates, cheap fizzy pop and French sunshine. Chris' irreverent sense of humour was born from years as both a mild mannered doodler and angry burger flipper. Taking inspiration as much from Henri Matisse as he does The Muppets as well as odd bits of packaging collected from foreign supermarkets Chris' work has been described as charming and visually striking with a sharp graphic style. His illustrations are populated with rambunctious characters that are a cleverly crafted mix of an uncomplicated line style, wonky perspectives and conspicuous colour choices.