Whodunit Mysteries: Pit your wits against our team of sleuths to solve the cases

My Best Mathematical and Logic Puzzles

Matchstick Puzzles: Test Your Brain-Power with these Tricks and Puzzles

Brain Training And Brain Games for Memory Improvement: Concentration and Memory Improvement Strategies with Mind Mapping: Concentration and Memory Improvement Strategies with Mind Mapping

Bletchley Park Codebreaking Puzzles

How to Solve a Rubik's Cube: The Easy Solution to The Rubik's Cube, A Beginner's Guide to Solving This Puzzle, Quick and Easily! (3x3 Cube) (Rubix) (2nd Edition)

Cracking Codes and Cryptograms For Dummies

The Pub Quiz & Puzzle Book

IQ and Aptitude Tests: Assess Your Verbal Numerical and Spatial Reasoning Skills

The Secret

Genius Brain Teasers Book

The World Cup Of Everything: Bringing the fun home

1000 IQ Puzzles

The Business Standard Quiz Book

Spy School: Are You Sharp Enough to be a KGB Agent?

The Stanford Mathematics Problem Book: With Hints and Solutions

Codes and Ciphers - A History of Cryptography

Assassin's Creed - Escape Room Puzzle Book: Explore Assassin's Creed in an escape-room adventure

IQ and Psychometric Test Workbook: Essential Preparation for Verbal Numerical and Spatial Aptitude Tests and Personality Tests

Why You Lose at Bridge