Killer Sudoku 2: 100 Easy to Hard Puzzles and How To Solve Them
Dr Gareth Moore is the author of a wide range of brain-training and puzzle books for both children and adults, including The Mammoth Book of Fun Brain Training, Keep Your Brain Fit: 101 Ways to Tone your Mind and The Rough Guide Book of Brain Training. He also writes the monthly magazine Sudoku Xtra (www.sudokuxtra.com) and runs the puzzle website www.puzzlemix.com. He gained his Ph.D from Cambridge University in the field of Artificial Intelligence, and has contributed to various advanced projects for leading technology companies.