For those who like to live dangerously and push beyond their mental comfort zone, steel yourself for the second book in The Times' toughest Killer series yet. Prepare for the extreme mental challenge of 100 Deadly-level Killer puzzles, including, exclusive to The Times, 20 Extra Deadly, to really te[...]
The fourth instalment in the fiercely popular, bestselling Fiendish Su Doku series. A new collection of previously unpublished Fiendish Su Doku puzzles with the added bonus of 25 Super Fiendish puzzles. Perfect for the advanced solver in need of a constant supply of ultra-difficult puzzles, and guar[...]