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.

The challenges in the Ingenious Books series are created by one of the world’s leading puzzle authors, with great experience of producing puzzles that are enjoyably challenging, meaning that the dedicated puzzler will be sure of a satisfying solving experience.