The Times Fiendish Su Doku Book 17

A collection of 200 previously unpublished Fiendish Su Doku puzzles. Perfect for the expert solver in need of a constant supply of ultra-difficult puzzles. Guaranteed to provide hours of absorbing, brain-stretching entertainment.

The puzzles in this collection of treacherously difficult puzzles will stretch even the most advanced Su Doku enthusiast. You will need to use all of your best solving techniques to get to the end of this testing challenge. The puzzles in the collection are of the highest quality and are perfect for the advanced solver in need of a constant supply of ultra-difficult puzzles. Guaranteed to provide hours of mind-stretching entertainment.

Challenge your brain with these enjoyable puzzles. The latest title in The Times Fiendish Su Doku series - previously unpublished quality Su Doku puzzles. Includes 180 Fiendish and 20 Super Fiendish puzzles. You don't need to be a mathematical genius to solve the treacherous puzzles in this collection of Fiendishly difficult puzzles - it's simply a question of logic. Perfect for the advanced solver in need of a constant supply of ultra-difficult puzzles, and guaranteed to provide hours of mind-stretching entertainment.

Killer Su Doku poses an even greater challenge than the Fiendish Su Doku puzzles.Here are 100 previously unpublished puzzles for hard-core Su Doku addicts.

A collection of 200 previously unpublished Difficult Su Doku puzzles. Perfect for the more advanced Su Doku solver in need of a constant supply of challenging puzzles. Guaranteed to provide hours of absorbing, brain-stretching entertainment.

Catch the latest wave in Sudoku-mania! These 275 X-Factor SuDoku puzzles are for the diagonally challenged, in 6 difficulty levels from Simple to Fiendish. X-Factor puzzles follow the same rules as for regular SuDoku puzzles PLUS the two shaded diagonal regions also contain the numbers 1 to 9 once only. Each X-Factor puzzle is joined to a previous and following puzzle through common puzzle solution numbers. As well, this book is an extension of "The World's Longest SuDoku Puzzle", now at 1,271 puzzles in length. Includes strategy guide for solving SuDoku puzzles, and tips on how to find X-Factor numbers. And for those who still can't get enough, try solving 275 riddles! Joe Defries is a current 2-time Guinness World Record holder, and is the joe in suJoku.com & joe-ks.com (the Largest Source of Internet Humour). Betcha Can't Beat That!* * re Joe's 'super-human puzzling feat' - the World's Longest SuDoku Marathon - as published in "The Addict's Guide to Everything Sudoku" by Fiorella Grossi, Fair Winds Press, 2007

Part of Jumbo Sudoku series, this title includes over 275 puzzles. It also includes classic Sudoku as well as Samurai, Kakuro, Killer, and 'Son of Sudoku' (Futoshiki puzzles).

Due to popular demand, having published numerous books with Killer Sudoku puzzles which contained puzzles of all difficulties, this time Djape has decided to publish a book only with the toughest and deadliest Killers. By no means is this a book for a novice Killer Sudoku solver. It is intended only for the most experienced and most persistent of those who are already masters at solving Sudokus with sums. It contains only puzzles of the 3 hardest levels of difficulty which Djape produces: BRAIN, IQ and INSANE, with addition of a few puzzles of an even more fiendish kind - Zero Killer Sudokus. 40 BRAIN (5 diagonal) 50 IQ! 10 ZERO (including 8 ZERO INSANE) 11 INSANE! For a total of 111 most difficult Killer Sudoku puzzles So... are you up for this challenge?