- BIG SUDOKU: Easy to hard puzzle for adult,200 puzzles and solution
- Sudoku Lower Your Brain Age: Sudoku Book For Adult> Relax, Unwind, and Give Your Brain a Vacation, Perfect as a Birthday Present - Puzzle Book with Solutions.
- Sudoku Brain Game: Sudoku Book, Huge Bargain Collection of Puzzles and Solutions, Medium to Hard Level, Tons of Challenge for your Brain!
- SUDOKU BOOK FOR KIDS: Big Sudoku Book > If you're looking for a brain-stimulating, screen-free activity,this is the best Sudoku books for you
- BRAIN GAME SUDOKU: Big Sudoku Book > If you're looking for a brain-stimulating, screen-free activity,this is the best Sudoku books for you