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Showing: 21-30 results of 123

Now in its second edition, Ultimate Psychometric Tests is the biggest book of its kind, containing over 1,000 practice test questions plus answers and explanations. It includes an overview of which tests are employed by testing companies as well as which companies employ what tests, including L'Oreal, Sony, HMV, Toyota and IKEA.  Providing plenty of advice on how to prepare and succeed, Bryon includes sample questions from all... more...


For the first time ever, Will Shortz personally selects 75 of his favorite puzzles from his tenure as editor of The New York Times crossword puzzles. Special commentary will appear along with each puzzle and give clever insight into the puzzle-solving world that Will Shortz dominates. Getting to know the background on these puzzles will add a new dimension for the growing number of crossword buffs. Also included is a special... more...

The Puzzler's Dilemma explores the world of classic logic puzzles, and tells the amazing stories behind them, from the Lighthouse of Alexandria to code-breaking with the Enigma machine. Here are brain teasers that even maths whizzes have never seen explained by a mind as nimble as Derrick Niederman's, author of Number Freak and The New York Times's near-genius crossword setter. "A man is found dead in a room, hanging from a rope with only a puddle of... more...

Genius mathematician, Dr. Dennis Shasha, here sets out his latest book-length mind-twister. Made up of many smaller segments, some of which can be solved by ten year-olds and some which are more challenging, the detective work requires no more than high school geometry and junior high school algebra. In every case, imagination trumps knowledge. The puzzles are set in a larger story of a mathematical detective named Dr. Ecco, his... more...


Written and compiled by IQ-test experts, Ultimate IQ Tests contains 1,000 practice questions organized into 25 tests, with a simple guide to assessing individual performance. The questions themselves are similar to those on an actual IQ test. In order for readers to practice the different types of question that they are likely to encounter, this book offers multi-discipline questions, including: - verbal reasoning - numerical reasoning - diagrammatic... more...

This collection of more than one hundred original and highly sophisticated puzzles presents challenges that require creative, “outside of the box” thinking. Many different types of puzzles are included, such as word, number, logical, visual, spatial, dissection, dividing, dot-connecting, matchstick, coin, and more. Each aesthetically appealing puzzle is designed to improve problem solving skills; train geometric, combinatorial, and spatial... more...

Packed with more than 300 challenging exercises, Boost Your Brain helps target the memory challenges of modern life, like remembering PIN numbers, passwords, and matching names with faces. With dynamic infographics, technique boxes, a scoring system, and at-home challenges, Boost Your Brain is a complete mental fitness regime in one book.

Sam Loyd (1841-1911) was the all time greatest inventor and developer of puzzles. He is described by Martin Gardner, the author of the "Mathematical Games" column in Scientific American, as "America's greatest puzzlist and an authentic American genius". His fame is world wide and books of his puzzles have been published in Russian and many other languages. This book, Sam Loyd's Cyclopedia of 5,000 Puzzles Tricks & Conundrums with Answers, was... more...

A great way to have fun and build brain power, Brain Teasers offers a variety of games to delight and challenge even the most advanced puzzler. Brain Teasers shows off some outrageously fun new mindbenders, like anasearches (a combination of an anagram, a crossword, and a word search), numberlockers (think of a crossword puzzle with numbers instead of words), and alphabetics (a miniature crossword puzzle that uses... more...