These are hard difficulty sudoku puzzles that have 2 puzzles per A4 sheet of paper and the solutions on an additional sheet.
Archive Puzzles – 40 Hard Sudoku Puzzles – Books 1 to 10
Printable Sudoku Puzzles Hard sudoku puzzles are much more difficult and are suggested for experienced sudoku players. These sudoku puzzles will have less figures already entered. 40 Hard Sudoku Puzzles – Book 01 40 Hard […]