| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| 9x9 sudoku extremely hard | 1.64 | 0.8 | 8679 | 99 | 25 |
| 9x9 | 1.75 | 0.8 | 5546 | 78 | 3 |
| sudoku | 1.08 | 0.7 | 4137 | 17 | 6 |
| extremely | 1.17 | 0.4 | 6061 | 46 | 9 |
| hard | 1.64 | 0.3 | 2230 | 15 | 4 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| 9x9 sudoku extremely hard sudoku for expert | 0.39 | 0.1 | 6227 | 94 |
| 9x9 sudoku extremely hard | 0.37 | 0.2 | 8388 | 42 |
| 9x9 sudoku extremely hard for expert | 0.24 | 0.2 | 9439 | 61 |
| sudoku 9x9 free extremely hard | 0.22 | 1 | 8008 | 86 |
| daily extremely hard sudoku 9x9 | 0.63 | 0.1 | 828 | 45 |
| very hard sudoku puzzles 9x9 with answers | 0.85 | 0.1 | 3587 | 51 |
| very hard sudoku puzzles 9x9 pdf | 0.75 | 0.6 | 5113 | 8 |
| sudoku 9x9 easy with answer | 0.43 | 0.8 | 3606 | 22 |
| sudoku 9x9 with answers | 1.92 | 0.5 | 4198 | 98 |
| extreme sudoku 9 x 9 | 0.78 | 0.2 | 2719 | 56 |
| free online sudoku 9x9 | 0.5 | 0.5 | 584 | 97 |
| classic sudoku 9x9 pdf | 0.64 | 0.3 | 1882 | 71 |
| sudoku 9x9 easy printable | 1.62 | 1 | 9069 | 40 |
| free 9x9 sudoku puzzles | 1.34 | 0.5 | 5472 | 43 |
| sudoku puzzles with answers 9x9 | 1.38 | 0.2 | 2549 | 55 |
| play free online sudoku 9x9 | 1.3 | 0.7 | 3188 | 80 |
| sudoku puzzles online 9x9 | 0.24 | 0.4 | 7186 | 91 |
| free sudoku printable 9x9 | 0.86 | 1 | 1881 | 86 |
| daily hard sudoku 9x9 | 0.95 | 0.9 | 5605 | 7 |
