18 books • 6 series
Book #1: Times Tables Workbook Ages 7-11
Book #1: 200 Sudoku Easy to Medium
Book #2: 200 Sudoku Medium to Hard
Book #3: 200 Sudoku Hard to Extreme
Book #4: 200 Sudoku Extremely Hard
Book #1: 150 Sudoku for Kids Ages 4-8
Book #2: 150 Sudoku for Kids Age 10-12
Book #3: 150 Sudoku for Kids Age 8-12
Book #4: 150 Sudoku for 8 Year Old
Book #5: Christmas Sudoku for Kids 10-12
Book #1: 200 Sudoku Leicht Bis Mittel
Book #2: 200 Sudoku Mittel bis Schwer
Book #4: 200 Sudoku Extrem Schwer
Book #3: 200 Sudoku Schwer bis Extrem
Book #1: 150 Sudoku für Kinder ab 4 - 8
Book #2: 150 Sudoku fur Kinder ab 10-12
Book #3: 150 Sudoku für Kinder ab 8-12
Book #4: 150 Sudoku Kinder ab 8