| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| sudoku puzzles hard | 0.78 | 0.2 | 4574 | 38 | 19 |
| sudoku | 1.1 | 0.4 | 2040 | 22 | 6 |
| puzzles | 1.42 | 0.2 | 4329 | 71 | 7 |
| hard | 1.08 | 0.8 | 533 | 76 | 4 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| sudoku puzzles hard | 1.36 | 0.1 | 4100 | 20 |
| sudoku puzzles hard level | 0.75 | 0.8 | 1188 | 60 |
| sudoku puzzles hard printable | 0.54 | 0.7 | 1282 | 53 |
| sudoku puzzles hard pdf | 1.44 | 0.4 | 4779 | 41 |
| sudoku puzzles hard printable free | 0.18 | 0.1 | 5574 | 9 |
| web sudoku hard puzzles | 1.1 | 0.7 | 9700 | 96 |
| hard sudoku puzzles free online | 0.92 | 0.2 | 9575 | 75 |
| extremely hard sudoku puzzles | 1.08 | 0.9 | 5222 | 31 |
| hard sudoku puzzles online | 1.18 | 1 | 8439 | 15 |
| how to solve hard sudoku puzzles | 0.07 | 0.5 | 3440 | 95 |
