Series:

Hard

10 primary works

Book 1

Cover of Sudoku 100 Puzzles with Solutions. Hard Level Book 1

Book 2

Cover of Sudoku 100 Puzzles with Solutions. Hard Level Book 2

Book 3

Cover of Sudoku 100 Puzzles with Solutions. Hard Level Book 3

Book 4

Cover of Sudoku 100 Puzzles with Solutions. Hard Level Book 4

Book 5

Cover of Sudoku 100 Puzzles with Solutions. Hard Level Book 5

Book 6

Cover of Sudoku 100 Puzzles with Solutions. Hard Level Book 6

Book 7

Cover of Sudoku 100 Puzzles with Solutions. Hard Level Book 7

Book 8

Cover of Sudoku 100 Puzzles with Solutions. Hard Level Book 8

Book 9

Cover of Sudoku 100 Puzzles with Solutions. Hard Level Book 9

Book 10

Cover of Sudoku 100 Puzzles with Solutions. Hard Level Book 10