For more information about a pack of puzzles, please click its grid below.
Sudoku 9x9 hard puzzles 12-pack no.1
Sudoku 9x9 hard puzzles 12-pack no.2
Sudoku 9x9 hard puzzles 12-pack no.3
Sudoku 9x9 hard puzzles 12-pack no.4
Sudoku 9x9 hard puzzles 26-pack no.1
Sudoku 9x9 hard puzzles 26-pack no.2
Sudoku 9x9 hard puzzles 52-pack no.1
Sudoku 9x9 hard puzzles 6-pack no.1
Sudoku 9x9 hard puzzles 6-pack no.2
Sudoku 9x9 hard puzzles 6-pack no.3
