3D Sudoku is the ultimate challenge for an fan of Sudoku puzzles. With three times as many numbers than normal Sudoku, follow the colored lines and complete the

Compiled by the creator of the bestselling Book of Sudoku, Kakuro is the hot new puzzle craze sweeping the UK and now the US. The First Book of Kakuro includes

Best-selling author Al Sweigart shows you how to easily build over 80 fun programs with minimal code and maximum creativity. If you’ve mastered basic Python s

Master the Numbers Game That’s Taking the World by Storm Whether you’re one of the millions of people already obsessed with the number puzzles called Sudoku