These are hard difficulty sudoku puzzles that have 6 puzzles per A4 sheet of paper and the solutions on an additional sheet.

Hard Printable Sudoku Puzzles 6 Per Page – Book 4
Printable Sudoku Puzzles These hard sudoku puzzles a great way to play sudoku for the more seasoned player. A limited amount of numbers are already filled, so the puzzles will be much more difficult to […]