Perfect for coffee breaks, commutes or relaxing at home, this bumper collection of 300 brand new ultimate killer sudoku puzzles is guaranteed to provide you wit

Amusing fitness, warm-up, training and positive energy for the brain. 60 sudoku killer puzzles 8x8 very hard levels. 60 sudoku killer puzzles 9x9 very hard leve

For those who like to live dangerously and push beyond their mental comfort zone, steel yourself for The Times' toughest Ultimate Killer puzzles. A bumper colle

Containing a massive 300 deadly killer sudoku puzzles packaged in a stylish paperback, this is the perfect gift book for the avid killer sudoku fan. The 9 x 9 s