Logic & Brain Teasers

HYPERtheticals (50 Questions for Insane Conversations)

The Big Book of Brain-Boosting Pix-Cross Puzzles (Use Numbers, Clues, and Logic to Reveal Hidden Pictures-500 Picture Puzzles!)

USA TODAY Logic Super Challenge 3 (200 Puzzles)

USA TODAY Sudoku Super Challenge 3

How Do You Fight a Horse-Sized Duck? (Secrets to Succeeding at Interview Mind Games and Getting the Job You Want)

Mystifying Mind Benders (Over 100 Cunning Riddles, Puzzles & Mysteries to Solve)

The Escape Book (Can You Escape This Book?) - 9780785838920

10-Minute Brain Games (Logic and Reasoning)

101 Inspirational Bible Word Searches (The New Testament)

Rewording the Brain (How Cryptic Crosswords Can Improve Your Memory and Boost the Power and Agility of Your Brain)

60-Second Brain Teasers Crime Puzzles (Short Forensic Mysteries to Challenge Your Inner Amateur Detective)

10-Minute Brain Games (Words and Language)

Einstein's Twin (Mind-Bending Puzzles and Paradoxes from the World of Science)

USA TODAY Logic Super Challenge (200 Puzzles)

USA TODAY Sudoku Super Challenge 2 (200 Puzzles)

USA TODAY Logic Super Challenge 2 (200 Puzzles)

The Bogotá Puzzles

The Scotland Yard Puzzle Book (Test Your Inner Detective by Solving Some of the World's Most Difficult Cases)

Puzzle Baron's Number Logic Puzzles (Over 300 Brain-Challenging Puzzles-From Easy to Hard)

Mensa® AARP® Challenging Brain Twisters (LARGE PRINT) (100 Logic and Number Puzzles)

The Train Your Brain Mind Exercise (156 Puzzles for a Superior Mind)

USA TODAY Sudoku Super Challenge (200 Puzzles)

Posh Kurosu (175+ Puzzles)

299 On-the-Go Games & Puzzles to Keep Your Brain Young (Minutes a Day to Mental Fitness)

Games with Codes and Ciphers

Sangaku (Professor Hill Presents the World's Greatest Number Puzzles!)

Brain Games (Brain Teasers, Logic Tests, and Puzzles to Exercise Your Mind)

Memory Power 101 (A Comprehensive Guide to Better Learning for Students, Businesspeople, and Seniors)

10-Minute Brain Teasers (Brain-Training Tips, Logic Tests, and Puzzles to Exercise Your Mind)

Mighty Optical Illusions (More Than 200 Images to Fascinate, Confuse, Intrigue, and Amaze)

Mind-Boggling Word Searches

Puns, Puzzles, and Wordplay (Fun and Games for Language Lovers)

365 Games & Puzzles to Keep Your Mind Sharp

Brain Boot Camp (Secret Strategies to Become Instantly Smarter)

Mensa® Brilliant Brain Workouts (Keep Your Brain in Shape with 100 Number Games, Word Searches, Perplexing Puzzles, and More!)

Puzzles, Games, and Tricks (Understanding the Mystery and Magic of Numbers)

Brain Teasers (211 Logic Puzzles, Lateral Thinking Games, Mazes, Crosswords, and IQ Tests to Exercise Your Mind and Keep You Sharp 'til You're 100)

Sangaku #2 (Professor Hill Presents the World's Greatest Number Puzzles!)

Mensa® 10-Minute Brain Teasers (Brain-Training Tips, Logic Tests, and Puzzles to Exercise Your Mind)

Boost your IQ (Tips and Techniques for a Sharper Mind)

Mastering Numbers (Everyday Mathematics Made Simple)

Instant Recall (Tips And Techniques To Master Your Memory)

Brain Workout (Tips and Techniques to Train your Mind)

Deadly Skills Puzzle and Activity Book

Mystifying Mathematical Puzzles (Golden Spheres, Squared Eggs and Other Brainteasers)

The Riddler (Fantastic Puzzles from FiveThirtyEight)

Sherlock Holmes' Book of Conundrums (Brain Teasers, Lateral Thinking Puzzles, Logic Problems)

Dental Floss for the Mind (A complete program for boosting your brain power)

HYPERtheticals (50 Questions for Insane Conversations)

The Big Book of Brain-Boosting Pix-Cross Puzzles (Use Numbers, Clues, and Logic to Reveal Hidden Pictures-500 Picture Puzzles!)

USA TODAY Logic Super Challenge 3 (200 Puzzles)

USA TODAY Sudoku Super Challenge 3

How Do You Fight a Horse-Sized Duck? (Secrets to Succeeding at Interview Mind Games and Getting the Job You Want)

Mystifying Mind Benders (Over 100 Cunning Riddles, Puzzles & Mysteries to Solve)

The Escape Book (Can You Escape This Book?) - 9780785838920

10-Minute Brain Games (Logic and Reasoning)

101 Inspirational Bible Word Searches (The New Testament)

Rewording the Brain (How Cryptic Crosswords Can Improve Your Memory and Boost the Power and Agility of Your Brain)

60-Second Brain Teasers Crime Puzzles (Short Forensic Mysteries to Challenge Your Inner Amateur Detective)

10-Minute Brain Games (Words and Language)

Einstein's Twin (Mind-Bending Puzzles and Paradoxes from the World of Science)

USA TODAY Logic Super Challenge (200 Puzzles)

USA TODAY Sudoku Super Challenge 2 (200 Puzzles)

USA TODAY Logic Super Challenge 2 (200 Puzzles)

The Bogotá Puzzles

The Scotland Yard Puzzle Book (Test Your Inner Detective by Solving Some of the World's Most Difficult Cases)

Puzzle Baron's Number Logic Puzzles (Over 300 Brain-Challenging Puzzles-From Easy to Hard)

Mensa® AARP® Challenging Brain Twisters (LARGE PRINT) (100 Logic and Number Puzzles)

The Train Your Brain Mind Exercise (156 Puzzles for a Superior Mind)

USA TODAY Sudoku Super Challenge (200 Puzzles)

Posh Kurosu (175+ Puzzles)

299 On-the-Go Games & Puzzles to Keep Your Brain Young (Minutes a Day to Mental Fitness)

Games with Codes and Ciphers

Sangaku (Professor Hill Presents the World's Greatest Number Puzzles!)

Brain Games (Brain Teasers, Logic Tests, and Puzzles to Exercise Your Mind)

Memory Power 101 (A Comprehensive Guide to Better Learning for Students, Businesspeople, and Seniors)

10-Minute Brain Teasers (Brain-Training Tips, Logic Tests, and Puzzles to Exercise Your Mind)

Mighty Optical Illusions (More Than 200 Images to Fascinate, Confuse, Intrigue, and Amaze)

Mind-Boggling Word Searches

Puns, Puzzles, and Wordplay (Fun and Games for Language Lovers)

365 Games & Puzzles to Keep Your Mind Sharp

Brain Boot Camp (Secret Strategies to Become Instantly Smarter)

Mensa® Brilliant Brain Workouts (Keep Your Brain in Shape with 100 Number Games, Word Searches, Perplexing Puzzles, and More!)

Puzzles, Games, and Tricks (Understanding the Mystery and Magic of Numbers)

Brain Teasers (211 Logic Puzzles, Lateral Thinking Games, Mazes, Crosswords, and IQ Tests to Exercise Your Mind and Keep You Sharp 'til You're 100)

Sangaku #2 (Professor Hill Presents the World's Greatest Number Puzzles!)

Mensa® 10-Minute Brain Teasers (Brain-Training Tips, Logic Tests, and Puzzles to Exercise Your Mind)

Boost your IQ (Tips and Techniques for a Sharper Mind)

Mastering Numbers (Everyday Mathematics Made Simple)

Instant Recall (Tips And Techniques To Master Your Memory)

Brain Workout (Tips and Techniques to Train your Mind)

Deadly Skills Puzzle and Activity Book

Mystifying Mathematical Puzzles (Golden Spheres, Squared Eggs and Other Brainteasers)

The Riddler (Fantastic Puzzles from FiveThirtyEight)

Sherlock Holmes' Book of Conundrums (Brain Teasers, Lateral Thinking Puzzles, Logic Problems)

Dental Floss for the Mind (A complete program for boosting your brain power)