Title: Will Shortz Presents Keep Calm and Sudoku On: 200 Easy to Hard Puzzles, Author: The New York Times
Title: Will Shortz Presents Surrender to Sudoku: 200 Irresistibly Hard Puzzles, Author: Will Shortz
Title: Will Shortz Presents Killer Sudoku: 200 Hard Puzzles, Author: Will Shortz
Title: Mensa� Mind Benders: 100 Logic Games and Puzzles to Improve Your Memory, Exercise Your Brain, and Keep Your Mind Sharp, Author: David Millar
Title: Will Shortz Presents Daring Sudoku: 200 Harder Puzzles, Author: Will Shortz
Title: Sudoku for Brain Fitness: 90-Day Challenge to Sharpen the Mind and Strengthen Cognitive Skills, Author: Steven Clontz
Title: Will Shortz Presents Wicked Sudoku: 200 Hard Puzzles, Author: Will Shortz
Title: Will Shortz Presents Sudoku for 365 Days: A Year of Easy-to-Hard Puzzles, Author: Will Shortz
Title: Will Shortz Presents Double Shot Sudoku: 200 Challenging Puzzles, Author: Will Shortz
Title: Mensa® 10-Minute Brain Teasers: Brain-Training Tips, Logic Tests, and Puzzles to Exercise Your Mind, Author: American Mensa
Title: Will Shortz Presents Sudoku & Chill: 200 Easy to Hard Puzzles, Author: Will Shortz
Title: Will Shortz Presents Large-Print Sudoku To Go: 300 Easy to Hard Puzzles to Boost Your Brainpower, Author: Will Shortz
Title: Will Shortz Presents Deadly Sudoku: 200 Hard Puzzles, Author: Will Shortz
Title: Will Shortz Presents Dangerous Sudoku: 200 Very Hard Puzzles, Author: Will Shortz
Title: The Healthy Brain Book of Sudoku Variants, Author: Bastien Vial-Jaime
Title: Will Shortz Presents Triple Threat Sudoku: 200 Hard Puzzles, Author: Will Shortz
Title: Pause for Puzzles: Sudoku for Mindfulness, Author: Frank Longo
Title: The Peaceful Mind Book of Sudoku, Author: Frank Longo
Title: Will Shortz Presents The Little Book of Lots of Sudoku: 200 Easy to Hard Puzzles, Author: Will Shortz
Title: Go!Games Absolutely Addictive Sudoku, Author: Terry Stickels

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