Soluciones - The Amazing Book Of Sudoku
The Amazing Book of Sudoku offers 2000 grids with 3 levels of difficulty (intermediate, difficult, expert).
| 6 | 1 | 3 | 7 | 9 | 4 | 2 | 8 | 5 |
| 2 | 7 | 5 | 1 | 8 | 6 | 3 | 9 | 4 |
| 8 | 4 | 9 | 5 | 3 | 2 | 1 | 7 | 6 |
| 3 | 5 | 1 | 9 | 6 | 7 | 4 | 2 | 8 |
| 9 | 2 | 4 | 3 | 5 | 8 | 6 | 1 | 7 |
| 7 | 6 | 8 | 4 | 2 | 1 | 5 | 3 | 9 |
| 4 | 3 | 7 | 8 | 1 | 5 | 9 | 6 | 2 |
| 5 | 9 | 6 | 2 | 7 | 3 | 8 | 4 | 1 |
| 1 | 8 | 2 | 6 | 4 | 9 | 7 | 5 | 3 |