| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| sudoku puzzles hard | 1.55 | 0.2 | 3445 | 83 | 19 |
| sudoku | 0.16 | 0.3 | 2803 | 68 | 6 |
| puzzles | 0.73 | 0.1 | 9144 | 39 | 7 |
| hard | 1.74 | 0.2 | 5972 | 92 | 4 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| sudoku puzzles hard | 0.57 | 0.2 | 4811 | 26 |
| sudoku puzzles hard level | 1.65 | 0.5 | 9776 | 2 |
| sudoku puzzles hard printable | 1.55 | 0.4 | 8849 | 11 |
| sudoku puzzles hard pdf | 1.22 | 0.4 | 5117 | 53 |
| sudoku puzzles hard printable free | 1.18 | 0.3 | 6756 | 91 |
| web sudoku hard puzzles | 0.79 | 0.7 | 174 | 65 |
| hard sudoku puzzles free online | 1.48 | 0.3 | 8918 | 87 |
| extremely hard sudoku puzzles | 1.99 | 0.6 | 9142 | 30 |
| hard sudoku puzzles online | 1.49 | 0.1 | 8883 | 3 |
| how to solve hard sudoku puzzles | 1.13 | 0.4 | 8456 | 85 |
