The Ingenious Books are created specially for those discerning puzzle lovers who enjoy the challenge of finely crafted sudokus and other puzzle types. This collection contains sudokus arranged by increasing level of difficulty, so it is ideal for those who want to discover the satisfaction of solving the hugely popular number-placement puzzle, as well as those who already enjoy them.

ABOUT THE SERIES: The challenges in the Ingenious Books series are created by one of the world's leading puzzle authors, Ben Addler. His wealth of experience in producing challenging puzzles ensures the dedicated puzzler a truly satisfying solving experience.