106 books • 14 series
Book #2: Collection X-Large Sudoku-Volume 2
Book #1: Collection X-Large Sudoku-Volume1
Book #1: Super Sudoku Volume 1
Book #2: Super Sudoku Volume 2
Book #3: Collection X-Large Sudoku-Volume 3
Book #4: Collection X-Large Sudoku-Volume 4
Book #1: Hard X Large Sudoku-Volume1
Book #2: Hard X-Large Sudoku-Volume 2
Book #3: Hard X Large Sudoku-Volume 3
Book #4: Hard X Large Sudoku-Volume 4
Book #5: Hard X Large Sudoku-Volume 5
Book #1: sudoku hard book for adults 1
Book #1: Sudoku Hard 1
Book #4: Sudoku Hard 4
Book #5: Sudoku Hard 5
Book #6: Sudoku Hard 6
Book #1: Sudoku For Kids 6-9 Book 1
Book #1: Sudoku for Smart Kids Age 10-12
Book #3: sudoku hard book for adults 3
Book #5: sudoku hard book for adults 5
Book #6: sudoku hard book for adults 6
Book #8: sudoku hard book for adults 8
Book #9: sudoku hard book for adults 9
Book #1: Hard X Large Sudoku-Volume1
Book #2: Hard X-Large Sudoku-Volume 2
Book #3: Hard X Large Sudoku-Volume 3
Book #4: Hard X Large Sudoku-Volume 4
Book #5: Hard X Large Sudoku-Volume 5
Book #1: 777 Sudoku