X Factor Sudoku

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 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

The Addict's Guide to Everything Sudoku

Algebraic Sudoku Bk 2

Algebraic Sudoku follows the traditional algebra curriculum, while challenging students? minds with fun puzzles that develop logic, reasoning skills, concentration, and confidence. Each Sudoku puzzle is like a mini-lesson, with background, discussion, strategy, and demonstration for solving each problem. After completing the algebra exercises, students are given enough data that will allow them to reason their way through the remaining cells of the Sudoku puzzle that follows. Each activity is presented on a ready-to-use, reproducible master that can be easily photocopied or reproduced as a transparency for full-class instruction and discussion. With more than 30 activities in each book, Algebraic Sudoku is a must-have resource for all students enrolled in or preparing to take algebra, or for anyone who wants to keep their algebraic skills sharp.