30 books • 9 series
500+ Sudoku Easy to Hard Puzzle Extreme Brain Stimulating & Sharpening (Sudoku Puzzles Books Large Print, #5)
Sudoku Hard Puzzle Books Challenging Puzzles & Fantastic for Learning Skills (Sudoku Puzzles Books Large Print, #4)
Crossword Books for Adults Skill Enhancing & Motivating for Kids & Adults (Rossword Puzzles Books Large Print, #5)
Sudoku Puzzle Books Easy & Addictive for Different Aged Kids (Sudoku Puzzles Books Large Print, #3)