He has created 135 crosswords for The New York Times, making him one of the top 10 crossword constructors for that publication.

Whether you've got 10 minutes to kill or a lunch break to fill, there are creative challenges awaiting you.Unlike standard codeword puzzles, these puzzles contain NO clue letters at all to get you started, so only tackle these if you are an expert codeword solver! Alex Bellos, BBC radio presenter and author of Alex’s Adventures in Numberland, brings a collection of conundrums for crossword-lovers and codebreakers alike. He just uses them because some of their ideas are interesting: Gödel’s Incompleteness Theorem, Escher’s paradoxical stairs, Bach with his fugues and repeating patterns.

Brain teasers are considered to be one of the best puzzle games that help a person enhance his/her mental calibre by improving his/her information retaining capacity, critical thinking ability, pattern-matching capability, and problem-solving skills. Whether you are in for a light diversion for your downtime, or you want to shake the dust off your brain, puzzle books are a great way to get sharp and stay sharp. If you really enjoy a specific mystery-style puzzle book, there may be more in that same series to look forward to, such as the books below; Journal 29 and Almanaq Puzzlehunt Books.The bikes are 20 miles apart, they’re each going 10 miles an hour so it will take them an hour to reach each other. Whether you're on a long journey, commuting to work, taking a break, enjoying a leisurely coffee on a Sunday, or even taking a relaxing hot bath – a puzzle book be taken anywhere and offer a productive distraction, while boasting plenty of cognitive benefits, too. To do the third mile, you have to run the first mile, go back, do the second mile, go back, and then hit the third one. It contains 50 crosswords and 50 Sudoku puzzles, so you can have a go at a word puzzle and then have a go at a number/logic puzzle, and so on, as you work your way through the book. Some of the examples of puzzle games for adults that are available in textbook format in the market are listed below: 1.

Aspiring medics and fans of biology can prove their knowledge of the human body with Gray's Anatomy Puzzle Book, which features illustrations from the reference book it's named for. The aim of the puzzle is to place the numbers from 1-5 twice in each row and column of the grid, and once in each of the bold-lined regions in the grid.

As soon as it hits the handlebars of the other bike, it flies back to the first one and keeps going, back and forth. A bumper collection of 300 quick crossword puzzles to test your word knowledge and have you reaching for the thesaurus. Put your astronomy knowledge to the test with over 100 puzzles in this new book from the Royal Observatory Greenwich. And there are lots of custom-drawn images of animals to accompany the facts that children can enjoy colouring in to bring the book to life. This book contains 50 history-inspired crosswords, each of which is a standard quick crossword but containing several history-themed clues.

The first section of the book will take you through the most common types of code and cipher and the basics of solving them, and there are plenty of hints for when you get stuck. With an attractive cover and internal presentation, we hope you'll enjoy this fun collection of crosswords. The Natural History Puzzle Book will appeal to those who are interested in both brain-teasers and science, covering topics including dinosaurs, space, human evolution and the oceans.If you can visualise going around the faces of a cube and enjoy a large and tricky challenge, then this book of 3D Sudoku - in complete colour throughout - could be ideal for you! If so, take on the challenge of the "world's toughest puzzles" from Mensa, the international high-IQ society. However, others, such as colouring, should be completed over the longer term, allowing you to take a break from the stresses of everyday life and recharge your batteries.