The Mammoth Book of Codeword Puzzles is a truly bumper collection of these hugely popular puzzles - also known as codewords, cipher crosswords and cipher word puzzles. There are also some fun variations in the form of dropouts, keywords, coded quotes and long diversions. In a codeword puzzle, each grid is made up of numbered squares, with each number corresponding to a letter of the alphabet. A few letters are given, but the rest must be discovered by using logic and word power to crack the code. HOURS OF STIMULATING PUZZLE FUN!

A fun programme - featuring logic, observation, number and word puzzles, in categories such as reasoning, concentration and speed - that will help to build new brain skills in just a few minutes each day. At the end of each week, a 're-thinking' page features a range of suggestions and ideas to help improve your memory and unleash your creativity, challenging you to make better use of your brain in your daily life. An exceptionally wide range of content - 78 entirely different types of puzzle, none of which repeats within a quarter of a year - provides the novelty that helps a brain to thrive, while puzzles of the same type are carefully arranged in order of increasing difficulty through the book. A scoring system helps to keep you motivated as you improve week by week, with the final page of each week's puzzles offering you the chance to calculate your brain rank as another way to keep pushing yourself. Praise for The Mammoth Book of Fun Brain Training: 'The puzzles are fresh and lively' - Will Shortz

A collection of 10,000 side-splitting one-line jokes arranged in categories from bestselling humour editor Geoff Tibballs. 'Is my wife dissatisfied with my body? A small part of me says yes.' 'Letting the cat out of the bag is a whole lot easier than putting it back in.' 'I read somewhere that 26 is too old to still live with your parents. It was on a note, in my room.'

Illustrates the new features of Windows 10.

The National Security Agency is the world’s most powerful, most far-reaching espionage. Now with a new afterword describing the security lapses that preceded the attacks of September 11, 2001, Body of Secrets takes us to the inner sanctum of America’s spy world. In the follow-up to his bestselling Puzzle Palace, James Banford reveals the NSA’s hidden role in the most volatile world events of the past, and its desperate scramble to meet the frightening challenges of today and tomorrow. Here is a scrupulously documented account—much of which is based on unprecedented access to previously undisclosed documents—of the agency’s tireless hunt for intelligence on enemies and allies alike. Body of secrets is a riveting analysis of this most clandestine of agencies, a major work of history and investigative journalism. A New York Times Notable Book

Using previously unreleased documents, the author reveals new evidence that FDR knew the attack on Pearl Harbor was coming and did nothing to prevent it.

200 brand new compelling and addictive word and number puzzles from The Times. Appearing daily in the newspaper, Codeword is the cracking alternative to Su Doku and Crosswords. The concept is simple: each number represents a letter, so, starting with the solved letters, use your logic and vocabulary to reveal more letters, form words, and then crack the code! The most difficult puzzles for top solvers contain no solved letters so you need to employ all your logical strategies to crack those. The Codeword series is so popular because you don't need any prior knowledge, unlike a crossword. You can just pick up a pen and get puzzling. It steadily increases your vocabulary, as the difficulty slowly grows as you progress through the book, and even though you'll be working your brain, it's the perfect way to unwind.