| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| web sudoku hard puzzles | 1.07 | 0.9 | 2664 | 78 | 23 |
| web | 1.64 | 0.8 | 1029 | 51 | 3 |
| sudoku | 0.63 | 0.3 | 3931 | 8 | 6 |
| hard | 0.76 | 0.5 | 2287 | 21 | 4 |
| puzzles | 1.16 | 0.1 | 5900 | 21 | 7 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| web sudoku hard puzzles | 0.8 | 0.5 | 4442 | 50 |
| web sudoku hard puzzles unblocked | 0.4 | 0.6 | 8398 | 48 |
| web sudoku hard puzzles printable | 0.78 | 0.6 | 7486 | 51 |
| sudoku web hard sudoku puzzles | 1.34 | 0.2 | 471 | 5 |
| free online hard sudoku puzzles | 0.87 | 0.2 | 6628 | 41 |
| hard sudoku puzzles online | 0.91 | 0.4 | 6930 | 62 |
| free sudoku hard puzzles | 1.98 | 0.9 | 7509 | 94 |
| hard sudoku puzzles with answers | 1.64 | 0.4 | 7688 | 84 |
| solve web sudoku puzzles | 1.58 | 0.2 | 3566 | 60 |
| printable web sudoku puzzles | 1.22 | 0.9 | 6514 | 42 |
| sudoku very hard puzzles | 0.75 | 0.9 | 6766 | 31 |
| web sudoku easy puzzle answers | 1.29 | 0.8 | 3547 | 14 |
