There Are Snakes on the Sudoku! I Repeat, There Are Snakes on the Sudoku! ? When we said we wanted to combine the excitement of Snakes on a Plane with the intellectual stimulation of sudoku, everyone said we were crazy. Well, who's crazy now? We totally took regular sudoku puzzles, got rid of those safe 3-by-3 squares, and replaced them with deadly snakes. There are over 1,500 snakes in this book, and?Agent Flynn?isn't here to help you. Are you ready...