### Trivia Sudoku

**Looking for a 'Trivia Twist'? For trivia buffs, crossword solvers, and Sudokuholics, these 240 puzzles will stretch your imagination.**

Combine the logic of Sudoku with your world knowledge in a new "food for thought" format. Puzzle difficulty levels range from Redneck (very simple) to Sierpinski (17 'givens').

Includes a strategy guide for solving these puzzles, and flip-page animation of the suJoku logo man.

Joe Defries is a 2-time Guinness TM World Record Holder, and is the joe in suJoku.com & joe-ks.com (the Largest Source of Internet Humour). Betcha Can't Beat That!

**Paperback**

Size: 8 x 5 inches

ISBN: 9780978149567

Published: Dec-2011

### Sierpinski SuDoku

**Looking for the ultimate SuDoku challenge? Each of these 202 puzzles has 17 givens - the absolute minimum required to solve any SuDoku puzzle with just one solution**

Named after Polish mathematician, Waclaw Sierpinski, whose set theory work led to 'The Sierpinski Problem' & 'Seventeen or Bust', these Sierpinski SuDoku puzzles are all Fiendish+ rated.

Each puzzle is joined to a previous and following puzzle through common (shaded) puzzle & solution numbers. As well, this book is an extension of 'The World's Longest SuDoku Puzzle', now at 1,473 puzzles.

Includes a strategy guide for solving these puzzles, 202 riddles, and flip-page animation of the suJoku logo man.

Joe Defries is a 2-time Guinness TM World Record Holder, and is the joe in suJoku.com & joe-ks.com (the Largest Source of Internet Humour). Betcha Can't Beat That!

**Paperback**

Size: 8 x 5 inches

ISBN: 9780978149550

Published: Dec-2008

### X-Factor SuDoku

**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 TM World Record Holder, and is the joe in suJoku.com & joe-ks.com (the Largest Source of Internet Humour).

**Paperback**

Size: 8 x 5 inches

Pages: 328

ISBN: 9781440122026

Published: Feb-2009

**Purchase direct from the Author:**

**eBook**

File size: not available

Pages: 328

ISBN: 9781440122033

Published: Feb-2009

### Quad (Hyper) SuDoku

**Looking for another SuDoku challenge? These 234 Quad (also known as 'Hyper') puzzles provide an extra source of puzzle-meant, in 5 difficulty levels - from Easy to Fiendish.**

Quad puzzles follow the same rules as for regular SuDoku puzzles PLUS there are 4 (Quad!) extra shaded regions where each region also contains the numbers 1 to 9 once only. Each Quad 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". Includes strategy guide for solving SuDoku puzzles, and tips on how to find Quad numbers. And for those who still can't get enough, try solving the 234 riddles!

Joe Defries is a current 2-time Guinness TM World Record Holder, and is the joe in suJoku.com & joe-ks.com (the Largest Source of Internet Humour).

**Paperback**

Size: 8.5 x 5.5 x 0.6 inches

Pages: 278

ISBN: 0-595-48399-2

Published: Jan-2008

**Purchase direct from the Author:**

**eBook**

File size: not available

Pages: 278

ISBN: 0-595-60486-2

Published: Jan-2008

### 2fer 'One Choice' SuDoku

**Are you hooked on SuDoku - a true SuDokuholic, looking for a challenge? Each challenging puzzle contains a single "One Choice" number - can you spot it? **

Though there are other methods to solve SuDoku puzzles you"re stuck on, practice in spotting "One Choice" numbers will often give you what you need to continue. Why "2fer"? Not only is each challenging-level puzzle diagonally joined to a puzzle on each book page, it's also joined to a puzzle on prior/following pages.

As well, all 122 puzzles are an extension to "The World's Longest SuDoku Puzzle".* Includes strategy for solving SuDoku puzzles, instructions on how to de-mystify 2fer puzzles, and secret tips on how to find "One Choice" numbers. Joe Defries is a current 2-time GuinnessTM World Record Holder*, and is the joe in SuJoku.com & joe-ks.com (the Largest Source of Internet Humour).

**Paperback**

Size: 8.25 x 11 inches

Pages: 88

ISBN: 0-595-47549-3

Published: Nov-2007

**eBook**

File size: not available

Pages: 88

ISBN: 0-595-91817-4

Published: Nov-2007

### World's Longest SuDoku Puzzle

The 'World's Longest Sudoku Puzzle' was created by Joe Defries in 2006, and used during his November 5-6, 2006 Guinness World Record event (details at suJoku.com). 640 diagonally-chained puzzles each have a unique solution, and share common numbers with surrounding puzzles.

The puzzle difficulty levels are from Very Easy to Mild. During the Guinness event, this book was used as a fundraiser for the B.C. Children's Hospital. To help 'newbies' to Sudoku, the puzzles start at a Very Easy level of difficulty (the first puzzle is a 'Redneck Sudoku' puzzle - so easy that even Bubba can complete it), and progressively increase in difficulty to a Mild level.

As of 2009, Joe has created four more Sudoku books - each book also containing diagonally-chained puzzles, bringing today's length of the 'World's Longest Sudoku Puzzle' to a length of 1,473. What better way to become a suJokuholic than to start with his first book - see if you can beat Joe's 'longest solo Sudoku marathon' time of 34 hours, 56 minutes to reach Puzzle #201...

**Paperback**

Size: 8.5 x 11 inches

Pages: 115

ISBN: 0-9781495-1-3

Published: Nov-2005