Snakes on a Sudoku Author:Francis Heaney, Conceptis Puzzles 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 t... more »hem with deadly snakes. There are over 1,500 snakes in this book, and Agent Flynn isn’t here to help you. Are you ready for the challenge?« less