Take nine Sudoku games, combine them with the aid of yet another game and what you get is a grid with 729 squares where 810 digits between 1 and 9 all have a given position This book contains 36 Sudoku10 games.. or in other words: 360 regular Sudoku games, combined in groups of 10. 26244 squares to be filled in with 29160 digits, and hours of entertaining food for your brain Sudoku10 was created by Dennis Rudin, Sweden.