Specially compiled to provide the most deadly Su Doku challenge, Ultimate Killer Su Doku 6 is the only volume for Su Doku enthusiasts who need a puzzle that really tests their mettle. Prepare yourself for the toughest Su Doku challenge there is. These diabolically difficult Ultimate Killer Su Doku [...]

This is the fifth title in the Fiendish series - the latest volume of quality previously unpublished puzzles from the puzzle providers to the Times. You don't need to be a mathematical genius to solve the puzzles in this, the fifth collection of Fiendishly difficult puzzles, it is simply a question [...]

This supremely challenging cryptic collection contains 50 jumbo-sized puzzles, conceived to really challenge your word skills. Selected by The Times' Crossword Editor, Richard Browne, this original collection will challenge even the most experienced crossword buff. The ultimate and only jumbo crypti[...]

For anyone who loves the challenge of Su Doku but manages to solve them within minutes, you can now enjoy the extended mental workout and ultimate endurance test of The Times Samurai Su Doku Book 2.[...]

The Times Su Doku Collection is a bumper collection of puzzles that will keep Su Doku enthusiasts entertained for hours.[...]

The eighth title in The Times Fiendish Su Doku series - the latest volume of previously unpublished quality Su Doku puzzles from the puzzle providers to the Times. You don't need to be a mathematical genius to solve the treacherous puzzles in this eighth collection of Fiendishly difficult puzzles - [...]

Test your word power and rack your brain with this mixed collection of 500 puzzles and conundrums from the MindGames section of The Times. With more than 500 assorted word puzzles and conundrums, this collection contains the favourites: Polygon, Lexica, Word Watch, Scrabble(TM) Challenge and Codewor[...]