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 24
Printable Sudoku Puzzles Hard sudoku puzzles are for the more advanced sudoku player. A lower amount of the numbers will be positioned onto the puzzle therefore making it harder difficultly. 06 Hard Sudoku Puzzles 12 […]