15 books • 3 series
Sudoku Puzzles for Recess
Cranium-Training Logic Puzzles
Brain Aerobics Logic Puzzles
Sudoku Para Ninos
Kakuro Puzzles (Sit & Solve)
Super Sudoku Puzzles for Kids
Sudoku (New Sip & Solve)
Mensa® Sudoku
Sudoku Puzzles for Kids
Easy Sudoku (Sit & Solve) (New Sit & Solve Travel)
Green Belt Sudoku®
Black Belt Sudoku®
White Belt Sudoku®
Hard Sudoku (Sit & Solve)
Brown Belt Sudoku®