With the massive appetite for Su Doku puzzles seemingly insatiable, The Times brings you another offering to satisfy those cravings.

With enough puzzles to satisfy even the most avid Su Doku addict, The Times Su Doku Book 7 contains 150 mind-bending variations of the devilish number grid, including:

40 Mild puzzles
50 Difficult puzzles
50 Fiendish puzzles
10 Super fiendish

With their new puzzle suppliers, market-leaders The Times continue to offer the best Su Doku puzzles. Four levels of difficulty put your logic to the ultimate test.