Sudoku in 2006

Killer Sudoku 1: The Deadly New Dimension by Collins Uk Staff

Extreme Sudoku: Over 300 Super-Challenging Puzzles with Tips & Tricks by Vorderman, Carol

The Times Su Doku Book 5 by Gould, Wayne

The Times Japanese Logic Puzzles: Hitori, hashi, slitherlink and mosaic by

The Times Difficult Su Doku by Gould, Wayne

Will Shortz Presents the Monster Book of Sudoku: 300 Wordless Crossword Puzzles by

Will Shortz Presents The Super-Colossal Book of Sudoku by Shortz, Will

Sudoku: 215 Puzzles from Beginner to Expert by Danesi, Marcel

Will Shortz Presents Sudoku for Your Bedside: 100 Wordless Crossword Puzzles by

Will Shortz Presents Sudoku for Stress Relief: 100 Wordless Crossword Puzzles by

Will Shortz Presents Simple Sudoku: 100 Wordless Crossword Puzzles; Volume 1 by

More Original Sudoku by Editors of Nikoli Publishing

The Essential Book of Japanese Puzzles and How to Solve Them by Moore, Gareth

Su Doku Demystified: The "How to" Book to Understand and Solve Su Doku puzzles by Dresnick M. D., Stephen J.

The Times Hashi by

Will Shortz Presents the Big Book of Easy Sudoku: 300 Wordless Crossword Puzzles by

Will Shortz Presents Sudoku for the Weekend by Shortz, Will

Will Shortz Presents Easiest Sudoku by Shortz, Will

New York Post Easy Su Doku: The Official Utterly Addictive Number-Placing Puzzle by Gould, Wayne

New York Post Fiendish Sudoku: The Official Utterly Addictive Number-Placing Puzzle by Gould, Wayne

New York Post Difficult Su Doku: The Official Utterly Adictive Number-Placing Puzzle by Gould, Wayne

Sudoku Variants by Conceptis Puzzles

Sudoku Under the Sun: More Than 380 Puzzles from the Penguin Samurai by Bodycombe, David J.

The Times Su Doku Book 6: 150 challenging puzzles from The Times by The Times Mind Games

Will Shortz Presents Fitness for the Mind Sudoku: 100 Wordless Crossword Puzzles by

Will Shortz Presents Sudoku for a Sunday Morning: 100 Wordless Crossword Puzzles by

Sudoku Master Class: 144 Devilish Puzzles with Advanced Strategies by Sheldon, Tom

Will Shortz Presents Sudoku for a Lazy Afternoon by Shortz, Will

The Essential Book of Hanjie: And How to Solve It by Moore, Gareth

New York Post Bathroom Sudoku: The Official Utterly Addictive Number-Placing Puzzle by Gould, Wayne

New York Post Cubicle Sudoku: The Official Utterly Addictive Number-Placing Puzzle by Gould, Wayne

Will Shortz Presents The Giant Gift Book of Sudoku by Shortz, Will

Sudoku: Medium to Hard by Pitkow, Xaq

New York Post Fat-Free Su Doku: The Official Utterly Addictive Number-Placing Puzzle by Gould, Wayne

X-Treme Sudoku by Editors of Nikoli Publishing

Will Shortz Presents the Little Black Book of Sudoku: 400 Puzzles by