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

These diabolically difficult Ultimate Killer Su Doku puzzles will really put your brain power to the test as you "warm up" with the 150 Deadly Killer puzzles be

Warning: Not suitable for amateur puzzlers! Prepare yourself for the toughest Su Doku challenge there is. These diabolically difficult Ultimate Killer Su Doku p

Quiz your family at home with crosswords, puzzles and games.Specially compiled to provide the most deadly Su Doku challenge, this is the only volume for Su Doku

Specially compiled to provide the most deadly Su Doku challenge, this is the only volume for Su Doku enthusiasts who need a puzzle that really tests their mettl