| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| sudoku puzzles evil hard | 0.4 | 0.9 | 9823 | 52 | 24 |
| sudoku | 1.67 | 1 | 7587 | 82 | 6 |
| puzzles | 1.11 | 0.8 | 5467 | 9 | 7 |
| evil | 1.56 | 0.2 | 2477 | 39 | 4 |
| hard | 1.96 | 0.2 | 6511 | 28 | 4 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| sudoku puzzles evil hard | 1.47 | 0.5 | 7662 | 91 |
| sudoku puzzles printable evil | 0.01 | 0.3 | 4315 | 71 |
| sudoku puzzles very hard | 1.03 | 1 | 6868 | 59 |
| extremely hard sudoku puzzles | 1.04 | 0.4 | 1289 | 72 |
| sudoku free puzzles hard | 1.14 | 0.4 | 5884 | 58 |
| free printable evil sudoku puzzles | 1.51 | 0.8 | 7277 | 64 |
| web sudoku hard evil | 1.13 | 0.8 | 6372 | 51 |
| extremely difficult sudoku evil | 1.13 | 0.9 | 3465 | 15 |
| sudoku puzzles hard level | 1.82 | 0.9 | 6946 | 55 |
| sudoku hard puzzles online | 1.56 | 0.2 | 3884 | 97 |
| hard sudoku puzzles with answers | 0.28 | 0.8 | 5681 | 71 |
| free evil sudoku puzzles to print | 1.14 | 1 | 1098 | 31 |
| solve hard sudoku puzzles | 1.28 | 0.9 | 6867 | 20 |
| web sudoku evil puzzle | 0.13 | 0.7 | 3752 | 54 |
| sudoku puzzle hard with answer | 0.08 | 0.7 | 4616 | 64 |
| sudoku.com evil | 1.45 | 0.8 | 9382 | 43 |
