These are hard difficulty sudoku puzzles that have 6 puzzles per A4 sheet of paper and the solutions on an additional sheet.
Archive Puzzles – 48 Hard Sudoku Puzzles – Books 11 to 20
Printable Sudoku Puzzles Hard sudoku puzzles are much more challenging and are suggested for experienced sudoku players. These puzzles shall have less digits already entered. 48 Hard Sudoku Puzzles – Book 11 48 Hard Sudoku […]