173 books • 1 series
Book #1: Sudoku Book for Adults 100 Puzzles Volume 1
Book #2: Sudoku Book for Adults 100 Puzzles Volume 2
Book #3: Sudoku Book for Adults 100 Puzzles Volume 3
Book #4: Sudoku Book for Adults 100 Puzzles Volume 4
Book #5: Sudoku Book for Adults 100 Puzzles Volume 5
