Completing a sudoku should take a sharp mind, not 20-20 vision. That's why this large-print puzzle book, from renowned creator Frank Longo, will strain your brain without straining your eyes. Every grid is super-sized for your solving pleasure, with large, easily seen numbers. Plus, there's only one puzzle per page and a generous amount of space for writing in the possibilities when the going gets tough. It's literally the next BIG thing in sudoku!