Crosswords, Sudoku & Number Puzzles Books

1881 products


  • The Mirror: Daily Su Doku 1: 150 puzzles from

    Octopus Publishing Group The Mirror: Daily Su Doku 1: 150 puzzles from

    1 in stock

    Book SynopsisThe sudoku phenomenon has passed from being a trend to a firm staple of puzzle pages. They're fun, achievable and meditative. Both relaxing and challenging in equal measure. For the first time 150 puzzles from the Mirror's world-beating puzzle pullout are presented in three levels of difficulty. Perfect for a holiday, commute or simply relaxing at home.

    1 in stock

    £7.59

  • Sudoku on the Loo

    Michael O'Mara Books Ltd Sudoku on the Loo

    1 in stock

    Book SynopsisOver 200 brand new sudoku puzzles by puzzle master, Dr Gareth Moore. At home or in the office, for many of us the only time we get a quiet moment is on the loo. Sudoku on the Loo will help you entertain yourself and keep your brain active in those precious spare moments. Containing 200 brand new sudoku puzzles, this little book will test your mental agility and boost your IQ ... all from the comfort of your toilet. So, pick up your trusty pen and get puzzling in peace. Complete the set with Word Searches on the Loo and Crosswords on the Loo.

    1 in stock

    £5.99

  • 2025 365 croesair CymraegSaesneg Un bob dydd

    Scribo Puzzles Publishing Limited 2025 365 croesair CymraegSaesneg Un bob dydd

    1 in stock

    Book Synopsis

    1 in stock

    £15.79

  • Wordoku - 1000 Word Sudoku Puzzles volume 2

    Independently Published Wordoku - 1000 Word Sudoku Puzzles volume 2

    1 in stock

    Book Synopsis

    1 in stock

    £14.67

  • Puzzle set for adults: The best activity for the

    Independently Published Puzzle set for adults: The best activity for the

    1 in stock

    Book Synopsis

    1 in stock

    £13.01

  • SUDOKU 1200 grilles, niveau 3-4-5-6 , volume 1,

    Independently Published SUDOKU 1200 grilles, niveau 3-4-5-6 , volume 1,

    1 in stock

    Book Synopsis

    1 in stock

    £11.95

  • Mots Croisés: Sport Dès 12 ans: Livre Mots

    Independently Published Mots Croisés: Sport Dès 12 ans: Livre Mots

    1 in stock

    Book Synopsis

    1 in stock

    £9.36

  • A Hen and a Half

    Tarquin Group A Hen and a Half

    1 in stock

    Book Synopsis

    1 in stock

    £18.99

  • The Daily Telegraph General Knowledge Crosswords

    Pan Macmillan The Daily Telegraph General Knowledge Crosswords

    1 in stock

    Book SynopsisAppearing every weekend in The Daily Telegraph Weekend section, these highly enjoyable puzzles are designed to test your general knowledge to its limits. They should be tackled with the help of encyclopaedias, a Who''s Who and an atlas, and probably with a drink to hand. As always, if inspiration fails the solutions are included at the back of the book.

    1 in stock

    £9.49

  • Big Book of Crosswords 9

    HarperCollins Publishers Big Book of Crosswords 9

    1 in stock

    Book SynopsisKeep your brain busy at home with everyday puzzles.A bumper collection of 300 quick crossword puzzles to test your word knowledge and have you reaching for the thesaurus. The puzzles are in a standard 13x13 grid size. How quickly can you solve these?You will find the solutions easily at the back of the book.Keep your mind sharp and improve your word power at the same time. Ideal for whiling away the time while travelling, on holiday or relaxing at home.

    1 in stock

    £7.59

  • Sudoku Variants

    Union Square & Co. Sudoku Variants

    5 in stock

    Book SynopsisSudoku comes in variations that range from simple to very difficult, and can take almost no time to finish or require many hours. This book presents a collection of games that showcase a range of possibilities, offering solvers who have become accustomed to the standard rules and grids new challenges.

    5 in stock

    £7.59

  • The Sunday Times Jumbo General Knowledge

    HarperCollins Publishers The Sunday Times Jumbo General Knowledge

    20 in stock

    Book SynopsisChallenge your general knowledgeA jumbo crossword puzzle and general knowledge workout to test and stimulate the brain cells with 50 large grid puzzles from The Sunday Times.These puzzles use the 23 x 23 jumbo-size grid, and appeared in the pages of the Sunday Times, they offer an entertaining and stimulating challenge to all crossword lovers and anyone interested in quizzes, trivia and testing their all-round knowledge.Contains more general knowledge clues then the standard Times Jumbo crossword, for example names of famous people, titles of songs, books, films, plays, operas, musicals and TV shows; places and sights, quotations questions with one or more words in a quote to identify as the answer.

    20 in stock

    £10.44

  • The Times Super Fiendish Su Doku Book 4

    HarperCollins Publishers The Times Super Fiendish Su Doku Book 4

    2 in stock

    Book SynopsisChallenge yourself at home with word and number puzzlesThese are previously unpublished quality Su Doku grids from the puzzle providers to The Times, and help to develop you to take on Extreme Su Doku.The 200 puzzles in this collection of treacherously difficult puzzles will stretch even the most advanced Su Doku enthusiast. You will need to use all of your best solving techniques to get to the end of this testing challenge.The puzzles in the collection are of the highest quality and are perfect for the advanced solver in need of a constant supply of ultra-difficult puzzles.Guaranteed to provide hours of mind-stretching entertainment.

    2 in stock

    £7.59

  • The Times Samurai Su Doku

    HarperCollins Publishers The Times Samurai Su Doku

    1 in stock

    Book SynopsisTest your powers of logic with these challenging Su Doku puzzles.For anyone who loves the challenge of Su Doku but manages to solve them within minutes, you can now enjoy the extended mental workout and ultimate endurance test of a five grid interlinked system.This is Su Doku multiplied: every column, row and 3x3 box must contain the digits 1 to 9. Where the puzzles overlap, the rows and columns do not go beyond their usual 9x9 length but the interlocking boxes give you more clues and more complexity.With another 100 new Samurai puzzles to vex you for hours, lose yourself in the four levels of this book:30 Mild30 Difficult30 Super difficult10 DeadlyEven the speediest of Su Doku solvers will be agonising over these ultra-complex, extended brain-teasers.These are the most difficult Su Doku puzzles in The Times range.

    1 in stock

    £10.44

  • Arcturus Publishing Ltd Extra Large Print Crosswords

    3 in stock

    Book SynopsisThis brilliant collection contains puzzles and their solutions in extra large-print type, so that they are easy for everyone to read, and extra enjoyable to solve. Test your word-finding skills, not your eyes!• LARGE-PRINT: Read these puzzles easily with their large-print lettering. • EXPAND YOUR KNOWLEDGE: This collection includes a variety of intriguing themes so you can pick up useful knowledge as you go along. • REMOVES STRESS: Let your stress melt away by working through these satisfying puzzles.ABOUT THE SERIES: Arcturus Extra Large Print Puzzles brings together the most popular puzzle types, presented with highly readable letters and numbers for easy reading.

    3 in stock

    £7.59

  • Absolutely Nasty Kakuro Level Three

    Union Square & Co. Absolutely Nasty Kakuro Level Three

    Book SynopsisKakuro is a puzzle type in which sums are given and solvers must deduce the numbers in the individual boxes. This title is suitable for hardcore kakuro devotees.

    £10.79

  • The Times Cryptic Crossword Book 24

    HarperCollins Publishers The Times Cryptic Crossword Book 24

    20 in stock

    Book SynopsisChallenge yourself at home with word and number puzzles The Times Cryptic Crossword is the most famous in the world. Test your word power with this classic collection of 100 cryptic puzzles compiled by the Editor of The Times Crossword.

    20 in stock

    £6.99

  • The Times Samurai Su Doku 2

    HarperCollins Publishers The Times Samurai Su Doku 2

    1 in stock

    Book SynopsisQuiz your family at home with crosswords, puzzles and games.For anyone who loves the challenge of Su Doku but manages to solve them within minutes, you can now enjoy the extended mental workout and ultimate endurance test of a five grid interlinked system.This is Su Doku multiplied: every column, row and 3x3 box must contain the digits 1 to 9. Where the puzzles overlap, the rows and columns do not go beyond their usual 9x9 length but the interlocking boxes give you more clues and more complexity.With another 100 new Samurai puzzles to vex you for hours, lose yourself in the four levels of this book:30 Mild30 Difficult30 Super difficult10 DeadlyEven the speediest of Su Doku solvers will be agonising over these ultra-complex, extended brain-teasers.These are the most difficult Su Doku puzzles in The Times range.

    1 in stock

    £10.44

  • The Times Killer Su Doku Book 15

    HarperCollins Publishers The Times Killer Su Doku Book 15

    3 in stock

    Book SynopsisChallenge yourself at home with word and number puzzlesThe latest volume in the hugely popular Killer Su Doku series from the puzzle suppliers to The Times, featuring the highest-quality puzzles with an extra element of arithmetic.This addition to the successful Times Killer Su Doku series will test your skills to the limit, adding the challenge of arithmetic and taking Su Doku to a new and even deadlier level of difficulty.The puzzles use the same 9x9 grid as Su Doku but with an added mathematical challenge. The aim is not only to complete every row, column and cube so that it contains the numbers 1-9, it is also necessary to ensure that the outlined cubes add up to the same number as well.With 200 new Moderate, Tricky, Tough and Deadly Killer Su Doku puzzles, there is no chance to ease yourself in with simple puzzles. For those who like to live dangerously and push beyond their mental comfort zone, steel yourself for The Times'' next, terribly tough instalment.

    3 in stock

    £7.59

  • The New York Times Daily Crossword Puzzles Monday

    Random House USA Inc The New York Times Daily Crossword Puzzles Monday

    5 in stock

    Book SynopsisMonday's Crosswords Do with Ease Tuesday's Crosswords Not a Breeze Wednesday's Crosswords Harder Still Thursday's Crosswords Take Real Skill Friday's Crosswords -- You've Come This Far...Saturday's Crosswords -- You're a Star!For millions of people, the New York Times crossword puzzles are as essential to each day as the first cup of coffee in the morning. Now, for the first time ever, these premier puzzles are available in six clever installments. With each day of the week, the puzzles increase gradually in skill level; Monday's the easiest, but Saturday's sure to challenge! Push your mental muscles a little harder each day with America's favorite sophisticated -- and fun -- pastime: the New York Times crossword puzzles!

    5 in stock

    £6.99

  • The Ultimate Brain Health Logic Puzzle Book for

    £12.99

  • Bonnier Books Ltd Sudoku

    10 in stock

    Book Synopsis

    10 in stock

    £5.72

  • The Times Super Fiendish Su Doku Book 9

    HarperCollins Publishers The Times Super Fiendish Su Doku Book 9

    3 in stock

    Book SynopsisChallenge yourself at home with number puzzlesPreviously unpublished quality Su Doku grids from The Times, which help develop your skills to take on Extreme Su Doku.The 200 puzzles in this collection of treacherously difficult puzzles will stretch even the most advanced Su Doku enthusiast. You will need to use all of your best solving techniques to get to the end of this testing challenge.The puzzles in the collection are of the highest quality and are perfect for the advanced solver in need of a constant supply of ultra-difficult puzzles.Guaranteed to provide hours of mind-stretching entertainment.

    3 in stock

    £7.59

  • HarperCollins Publishers Times Cryptic Crossword Book 1 80 of the worlds most famous crossword puzzles The Times Crosswords

    15 in stock

    Book SynopsisChallenge yourself at home with word and number puzzles The world’s most famous crossword – the first compilation in a brand-new series of The Times Crossword Book, with 80 puzzles to solve

    15 in stock

    £9.37

  • White Belt KenKen

    Union Square & Co. White Belt KenKen

    Book SynopsisA title that includes 300 puzzles.

    £7.59

  • The Times Super Fiendish Su Doku Book 11

    HarperCollins Publishers The Times Super Fiendish Su Doku Book 11

    1 in stock

    Book SynopsisTest your powers of logic with these challenging Su Doku puzzles.Previously unpublished quality Su Doku grids from The Times, which help develop your skills to take on Extreme Su Doku.The 200 puzzles in this collection of treacherously difficult puzzles will stretch even the most advanced Su Doku enthusiast. You will need to use all of your best solving techniques to get to the end of this testing challenge.The puzzles in the collection are of the highest quality and are perfect for the advanced solver in need of a constant supply of ultra-difficult puzzles.Guaranteed to provide hours of mind-stretching entertainment.

    1 in stock

    £7.59

  • Cottage Door Press Large Print Word Search Puzzles Purple: Over 200

    3 in stock

    Book Synopsis

    3 in stock

    £10.00

  • The New York Times Greatest Hits of Monday

    St Martin's Press The New York Times Greatest Hits of Monday

    10 in stock

    Book SynopsisA NEW day-of-the-week series with 100 puzzles in a convenient portable paperback package

    10 in stock

    £11.03

  • White Belt Sudoku

    Union Square & Co. White Belt Sudoku

    5 in stock

    Book SynopsisTaking a page from karate - another Japanese art - each title in the series is graded by colour: White Belt for easy, Green Belt for medium level, Brown Belt for hard, and Black Belt for the super-tough solvers. Each title also contains 300 puzzles.

    5 in stock

    £9.11

  • Black Belt Sudoku

    Union Square & Co. Black Belt Sudoku

    5 in stock

    Book SynopsisTaking a page from karate - another Japanese art - each title in the series is graded by colour: White Belt for easy, Green Belt for medium level, Brown Belt for hard, and Black Belt for the super-tough solvers. Each title also contains 300 puzzles.

    5 in stock

    £7.59

  • Everyday Calculus

    Princeton University Press Everyday Calculus

    1 in stock

    Book SynopsisCalculus. For some of us, the word conjures up memories of ten-pound textbooks and visions of tedious abstract equations. And yet, in reality, calculus is fun, accessible, and surrounds us everywhere we go. This book shows us how to see the math in our coffee, on the highway, and even in the night sky.Trade ReviewOne of American Association for the Advancement of Science's Books for General Audiences and Young Adults 2014 "For every befuddled math student who's ever sat in class and thought, 'When am I ever going to use this?' Fernandez, assistant professor of mathematics at Wellesley College, gleefully reveals the truth: the world really does run on math... Whether describing how biology uses math to design more efficient organs and body structures or the best way to figure out when to overhaul a subway car, Fernandez keeps the tone light, as entertaining as it is informative. The book will speak most strongly to readers with some experience in trigonometry and basic calculus, but it's also accessible to those willing to put in a little extra effort. Either way, Fernandez's witty, delightful approach makes for a winning introduction to the wonderland of math behind the scenes of everyday life."--Publishers Weekly (starred review) "The author earnestly and excitedly seeks to make the principles of calculus near and natural, without the intimidation of a five-pound textbook dense with equations... Fernandez invites the reader along on this work day and telegraphs an enthusiasm for seeing calculus, with hints of differential equations, presented to him. This excitement will communicate itself to the math enthusiast becoming acquainted with calculus through the author's style, which is both lively and confident."--Tom Schulte, MAA Reviews "Written in a bright conversational tone, this book wonderfully integrates calculus into everyday life."--Devorah Bennu, GrrlScientist, The Guardian "Professor Fernandez is a delightfully quirky writer and his book Everyday Calculus is lighthearted and compelling, connecting mathematics to daily life... Everyday Calculus will not only be found to be understandable by non-mathematicians but will also be found to be quite entertaining. Indeed, not everyone considers the calculus going on inside Tandoori ovens, and they should."--Robert Schaefer, New York Journal of Books "Written in a bright conversational tone, this book wonderfully integrates calculus into everyday life."--GrrrlScientist "[T]he book is perfect for a reader who really wants to know what mathematics are governing our lives and who wants to learn and understand or polish up his rusty knowledge of these mathematics."--A. Bultheel, European Mathematical Society "Everyday Calculus is a triumph in the pursuit of the lofty goal of comprehending the world. Fernandez has touched upon a sensitive nerve, not just because mathematics makes most people cringe, but because the subject has allowed the passage of great things from some of the greatest minds ever to wander within the twentieth century. Oscar Fernandez is as bold as Alfred S. Posementier in his quest to deliver mathematical thinking as nature's gift to the thinking person."--D. Wayne Dworsky, San Francisco Book Review "Fernandez is especially effective when linking together seemingly disparate activities for which the underlying mathematical basis is identical. As the subtitle of the book suggests, the thrust is more one of 'discovering the hidden math all around us' rather than showing 'how mathematics is used,' which provides an honest and very pleasurable journey."--Choice "The book offers in clear and concise fashion much of the material found in a traditional calculus textbook, but presents it beginning with a real world observation and then developing the mathematics needed to understand the observation."--AAAS "The author's style is witty, conversational and comfortable... A very captivating read."--Andrew Jones, Mathematics TodayTable of ContentsPreface ix Calculus Topics Discussed by Chapter xi CHAPTER 1 Wake Up and Smell the Functions 1 What's Trig Got to Do with Your Morning? 2 How a Rational Function Defeated Thomas Edison, and Why Induction Powers the World 5 The Logarithms Hidden in the Air 10 The Frequency of Trig Functions 14 Galileo's Parabolic Thinking 17 CHAPTER 2 Breakfast at Newton's 21 Introducing Calculus, the CNBC Way 21 Coffee Has Its Limits 25 A Multivitamin a Day Keeps the Doctor Away 30 Derivatives Are about Change 34 CHAPTER 3 Driven by Derivatives 35 Why Do We Survive Rainy Days? 36 Politics in Derivatives, or Derivatives in Politics? 39 What the Unemployment Rate Teaches Us about the Curvature of Graphs 41 America's Ballooning Population 44 Feeling Derivatives 46 The Calculus of Time Travel 47 CHAPTER 4 Connected by Calculus 51 E-Mails, Texts, Tweets, Ah! 51 The Calculus of Colds 53 What Does Sustainability Have to Do with Catching a Cold? 56 What Does Your Retirement Income Have to Do with Traffic? 58 The Calculus of the Sweet Tooth 61 CHAPTER 5 Take a Derivative and You'll Feel Better 65 I "Heart" Differentials 65 How Life (and Nature) Uses Calculus 67 The Costly Downside of Calculus 73 The Optimal Drive Back Home 75 Catching Speeders Efficiently with Calculus 77 CHAPTER 6 Adding Things Up, the Calculus Way 81 The Little Engine That Could ... Integrate 82 The Fundamental Theorem of Calculus 90 Using Integrals to Estimate Wait Times 93 CHAPTER 7 Derivatives Integrals: The Dream Team 97 Integration at Work-Tandoori Chicken 98 Finding the Best Seat in the House 101 Keeping the T Running with Calculus 104 Look Up to Look Back in Time 108 The Ultimate Fate of the Universe 109 The Age of the Universe 113 Epilogue 116 Appendix A Functions and Graphs 119 Appendices 1-7 125 Notes 147 Index 149

    1 in stock

    £18.00

  • The Official Book of Hanjie 150 Puzzles  Follow

    Penguin Putnam Inc The Official Book of Hanjie 150 Puzzles Follow

    4 in stock

    Book SynopsisHanjie (pronounced Han-JEA to rhyme with ninja) is the massively popular Japanese puzzle craze. Number clues and simple logic lead you to fill in some boxes while leaving others blank. If you fill in the boxes correctly, a picture will emerge! This game is perfect for anyone addicted to Sudoku and looking for a new challenge. Puzzle master Timothy E. Parker, named by Guinness World Records as “the world’s most syndicated puzzle compiler,” provides instructions and 100 mind-bending puzzles ranging from easy to medium to hard. The harder the puzzle, the more subtle and beautiful the resulting picture will be. How to Play: The numbers tell you the sequence of black squares you must fill in. Each group of black squares is separated by at least one white (empty) square. Successfully completing the puzzle will reveal a surprising picture.

    4 in stock

    £10.80

  • The Hidden Code of Cryptic Crosswords

    W Foulsham & Co Ltd The Hidden Code of Cryptic Crosswords

    5 in stock

    Book SynopsisUnlocks the mysteries of cryptic crosswords, revealing step by step how clues are constructed. Suitable for both casual enthusiasts and serious puzzlers, this book covers the topics ranging from the basic creation of a clue to the breakdown of various cryptic devices.

    5 in stock

    £9.67

  • Why Cats Land on Their Feet

    Princeton University Press Why Cats Land on Their Feet

    1 in stock

    Book SynopsisEver wonder why cats land on their feet? Or what holds a spinning top upright? Or whether it is possible to feel the Earth's rotation in an airplane? This title offers a compendium of paradoxes and puzzles that readers can solve using their own physical intuition. It also features an appendix that explains all physical concepts used in the book.Trade Review"A collection of physical puzzlers, often with counter intuitive manifestations, which, for all that, admit rigorous explanation supported by physical intuition... [H]ugely entertaining and provide hours of brainy activities."--Alexander Bogomolny, CTK Insights "This book seeks to nurture this physical intuition in readers by analyzing several paradoxes while keeping the math to a minimum. Through examining one puzzle or paradox after another, Levi emphasizes the underlying principles involved and helps foster an intuitive understanding of why things work the way they do. Readers will find themselves coaxed into learning because they want to satisfy their curiosity as they examine each puzzle... [A]n excellent resource for understanding some less-obvious principles of physics."--William Baer, Library Journal "Each chapter can be read in a few minutes time, say while you are drinking a cup of tea or coffee. It will give you a lot of inspiration to challenge or entertain your friends during a reception or another get-together with some different kind of beverages. Of course you will impress them only when they haven't read the book themselves already. Hence make sure that you are the first."--Adhemar Bultheel, European Mathematical Society "Mathematician Levi has assembled a fascinating collection of 77 puzzles, some clever new originals and some twists to old ones that challenge physical intuition... [A] pleasurable challenge."--Choice "Quite how a falling cat manages to land on its feet is a classic conundrum for undergraduate students of physics. Levi presents this and other puzzles, with a few clues to how to go about solving them using only high-school mathematics. He explains all the necessary physics concepts in the appendix too."--Nature Physics "Why Cats Land On Their Feet relies on a novel approach to problem solving that is not based on mathematics, but on models and physical intuition... By looking beyond formulas and equations, Levi's goal is to provide readers who have a familiarity with basic high-school math and physics with critical thinking skills that can be applied to a range of physics problems beyond the book."--Mechanical Engineering-CIME "Levi uses titillating puzzles and a humorous tone to truly infuse fun into the book. A must have for anyone that likes physics, or for that matter hates. Why Cats Land On Their Feet is a book that introduces the reader to the cool side of physics and then engages for hours."--Sarthak Shankar, Organiser "The book is written in an accessible style and presumes little mathematical knowledge: a couple of puzzles refer to some basic calculus, but most require only arithmetic. It is suitable for everyone from sixth form students upwards... Teachers and lecturers will particularly appreciate this text, finding in it numerous quirky thought-experiments, actual experiments and trivia to catch their students' attention."--Paul Taylor, Mathematics Today "This book will cultivate and challenge your physical intuition. Above all, it shows that physics and mathematics can be fun and useful at the same time."--Catherine A. Gorini, Mathematics Teacher "It is written with a lot of humor, and provides helpful insights without going into unnecessarily complicated physical or mathematical techniques. The style is informal and attractive, which makes the reading of the book a real pleasure."--Kiril Bankov, Mathematical GazetteTable of ContentsChapter 1 Fun with Physical Paradoxes, Puzzles, and Problems 1 1.1 Introduction 1 1.2 Background 3 1.3 Sources 3 Chapter 2 Outer Space Paradoxes 5 2.1 A Helium Balloon in a Space Shuttle 5 2.2 Space Navigation without Jets 9 2.3 A Paradox with a Comet 13 2.4 Speeding Up Causes a Slowdown 14 Chapter 3 Paradoxes with Spinning Water 17 3.1 A Puzzle with a Floating Cork 17 3.2 Parabolic Mirrors and Two Kitchen Puzzles 19 3.3 A Cold Parabolic Dish 21 3.4 Boating on a Slope 23 3.5 Navigating with No Engine or Sails 24 3.6 The Icebergs 25 Chapter 4 Floating and Diving Paradoxes 28 4.1 A Bathtub on Wheels 28 4.2 The Tub Problem--In More Depth 30 4.3 How to Lose Weight in a Fraction of a Second 32 4.4 An Underwater Balloon 33 4.5 A Scuba Puzzle 35 4.6 A Weight Puzzle 36 Chapter 5 Flows and Jets 39 5.1 Bernoulli's Law and Water Guns 39 5.2 Sucking on a Straw and the Irreversibility of Time 42 5.3 Bernoulli's Law and Moving Around in a Space Shuttle 44 5.4 A Sprinker Puzzle 45 5.5 Ejecting Water Fast but with Zero Speed? 48 5.6 A Pouring Water Puzzle 49 5.7 A Stirring Paradox 51 5.8 An Inkjet Printer Question 54 5.9 A Vorticity Paradox 55 Chapter 6 Moving Experiences: Bikes, Gymnastics, Rockets 57 6.1 How Do Swings Work? 57 6.2 The Rising Energy Cost 58 6.3 A Gymnast Doing Giants and a Hamster in a Wheel 60 6.4 Controlling a Car on Ice 63 6.5 How Does a Biker Turn? 64 6.6 Speeding Up by Leaning 65 6.7 Can One Gain Speed on a Bike by Body Motion Only? 66 6.8 Gaining Weight on a Motorbike 68 6.9 Feeling the Square in mv2 2 Through the Bike Pedals 69 6.10 A Paradox with Rockets 70 6.11 A Coffee Rocket 72 6.12 Throwing a Ball from a Moving Car 74 Chapter 7 Paradoxes with the Coriolis Force 77 7.1 What Is the Coriolis Force? 77 7.2 Feeling Coriolis in a Boeing 747 79 7.3 Down the Drain with Coriolis 80 7.4 High Pressure and Good Weather 80 7.5 What Causes Trade Winds? 82 Chapter 8 Centrifugal Paradoxes 84 8.1 What's Cheaper: Flying West or East? 84 8.2 A Coriolis Paradox 85 8.3 An Amazing Inverted Pendulum: What Holds It Up? 87 8.4 Antigravity Molasses 91 8.5 The "Proof" That the Sling Cannot Work 92 8.6 A David-Goliath Problem 93 8.7 Water in a Pipe 97 8.8 Which Tension Is Greater? 98 8.9 Slithering Ropes in Weightlessness 100 Chapter 9 Gyroscopic Paradoxes 104 9.1 How Does the Spinning Top Defy Gravity? 104 9.2 Gyroscopes in Bikes 108 9.3 A Rolling Coin 109 9.4 Staying on a Slippery Dome 111 9.5 Finding North with a Gyroscope 113 Chapter 10 Some Hot Stuff and Cool Things 117 10.1 Can Heat Pass from a Colder to a Hotter Object? 117 10.2 A Bike Pump and Molecular Ping-Pong 121 10.3 A Bike Pump as a Heat Pump 122 10.4 Heating a Room in Winter 124 10.5 Freezing Things with a Bike Tire 125 Chapter 11 Two Perpetual Motion Machines 127 11.1 Perpetual Motion by Capillarity 128 11.2 An Elliptical Mirror Perpetuum Mobile 129 Chapter 12 Sailing and Gliding 132 12.1 Shooting Cherry Pits and Sailing 133 12.2 Sailing Straight into the Wind 135 12.3 Biking against the Wind 136 12.4 Soaring without Updrafts 138 12.5 Danger of the Horizontal Shear Wind 141 Chapter 13 The Flipping Cat and the Spinning Earth 142 13.1 How Do Cats Flip to Land on Their Feet? 142 13.2 Can Trade Winds Slow Earth's Rotation? 144 Chapter 14 Miscellaneous 146 14.1 How to Open a Wine Bottle with a Book 146 14.2 :"t's Alive!" 149 14.3 Falling Faster Than g: A Falling Chain "Sucked in" by the Floor 150 14.4 A Man in a Boat with Drag 151 14.5 A "Phantom" Boat: No Wake and No Drag 154 14.6 A Constant-G Roller Coaster 156 14.7 Shooting at a Cart 158 14.8 Computing 2 with a Shoe 159 Appendix 161 A.1 Newton's Laws 161 A.2 Kinetic Energy, Potential Energy, Work 163 A.2.1 Work 163 A.2.2 Kinetic Energy 165 A.2.3 Potential Energy 166 A.2.4 Conservation of Energy 168 A.3 Center of Mass 169 A.4 Linear Momentum 171 A.5 The Torque 174 A.6 Angular Momentum 175 A.7 Angular Velocity, Centripetal Acceleration 178 A.8 Centrifugal and Centripetal Forces 181 A.9 Coriolis, Centrifugal, and Complex Exponentials 181 A.10 The Fundamental Theorem of Calculus 184 Bibliography 187 Index 189

    1 in stock

    £15.29

  • Createspace Independent Publishing Platform Sudoku Samurai - Experto - Volumen 5 - 159 Puzzles

    15 in stock

    15 in stock

    £12.50

  • 15 in stock

    £10.66

  • The Times Fiendish Su Doku Book 11

    HarperCollins Publishers The Times Fiendish Su Doku Book 11

    4 in stock

    Book SynopsisThe latest title in The Times Fiendish Su Doku series - previously unpublished quality Su Doku puzzles from the puzzle providers to the Times.

    4 in stock

    £7.99

  • The Times Big Book of Quick Crosswords 4

    HarperCollins Publishers The Times Big Book of Quick Crosswords 4

    4 in stock

    Book SynopsisChallenge yourself at home with word and number puzzlesFrom the puzzles section of The Times our Editors have chosen the best selection of general-knowledge and definition crossword puzzles to keep even the most eager enthusiasts entertained for hours.This collection of 300 accessible puzzles is utterly addictive, yet concise enough to be solved relatively quickly.Encompassing a wide range of subjects including geography, literature, history and culture, these general-knowledge and definition-based puzzles will test your word power and broaden your horizons at the same time.With clues that are satisfyingly skillful and containing no cryptic elements, these crosswords are guaranteed to stretch your mind and entertain you equally.Puzzles taken from previously published titles.

    4 in stock

    £8.54

  • The Times Quick Cryptic Crossword Book 5

    HarperCollins Publishers The Times Quick Cryptic Crossword Book 5

    3 in stock

    Book SynopsisChallenge yourself with word and number puzzles100 puzzles from The Times adapting the cryptic puzzle for those with a hectic lifestyle and schedule. Ideal for those starting out with cryptic crosswords, and those who'd like to tackle the main puzzle but feel daunted, or who can perhaps only solve a handful of clues.Appearing Monday to Friday in the puzzle pages of Times2, this crossword has a reduced 13x13 grid size and reduced difficulty too, the intention being to encourage people to take their first steps in tackling cryptic crosswords. And also to cater for those of us who have limited time to devote to our favourite pastime and need a ready-made set of puzzles that is solvable in a short space of time.

    3 in stock

    £7.59

  • Createspace Independent Publishing Platform 250 Killer Sudoku: Hard to Very Hard Killer Sudoku Puzzles

    15 in stock

    15 in stock

    £11.52

  • Jumbo Print Easy Crosswords 3

    Union Square & Co. Jumbo Print Easy Crosswords 3

    Book SynopsisChallenge your brain - not your eyes. These large-print, generously sized crosswords are simple to solve and easy to see. Each puzzle takes up two pages, so there's no need to strain while reading the clues and numbers in the boxes. With their entertaining subjects and great clues, they'll baffle you in the most delightful way.

    £10.79

  • The Best Puzzle Book for Adults: Popular Word,

    £12.99

  • Independently Published Giant Suguru: the Sequel

    15 in stock

    15 in stock

    £10.67

  • HarperCollins Publishers The Times Su Doku Book 12 150 original puzzles

    15 in stock

    Book SynopsisQuiz your family at home with crosswords, puzzles and games. Su Doku is the classic number puzzle.

    15 in stock

    £9.99

  • The Sun Wordsearch Book 9

    HarperCollins Publishers The Sun Wordsearch Book 9

    2 in stock

    Book SynopsisChallenge yourself with word puzzlesCalling all word search wizards! Here are 300 entertaining new puzzles that will have you hunting for hours.Inside you'll find a wonderful world of thematic word searches to explore, with some real brain teasers along the way. Wherever you are these are the puzzles for you!So sit back, relax, and prepare for a non-stop word search extravaganza.Solutions appear in the back.

    2 in stock

    £7.59

  • The Telegraph Cryptic Crosswords 1 The Telegraph

    Octopus Publishing Group The Telegraph Cryptic Crosswords 1 The Telegraph

    3 in stock

    Book SynopsisPerfect for puzzlers who enjoy lateral thinking and wordplay, this book contains 100 crosswords to provide hours of fun on a daily commute or evening in.This is the first title in a brand new relaunched series from the Telegraph puzzle pages, with all brand new puzzles for 2017.

    3 in stock

    £8.54

  • The Telegraph Quick Crosswords 5

    Octopus Publishing Group The Telegraph Quick Crosswords 5

    2 in stock

    Book SynopsisChallenge yourself with this brand new collection of 150 quick crosswords.The Telegraph Quick Crosswords 5 is perfect for the daily commute or any spare minutes in the day. With a wide variety of fun clues and over 150 crosswords, this book is guaranteed to keep you entertained. The fifth title in the best-selling Telegraph quick crosswords series, with all new puzzles for 2019.Perfect for puzzle fans and crossword lovers.

    2 in stock

    £9.49

  • Bird Lovers Sudoku

    Arcturus Publishing Bird Lovers Sudoku

    2 in stock

    Book Synopsis Eric Saunders is one of the world's leading puzzle compilers. An expert crossword clue creator, IQ puzzle manipulator and innovator of many new puzzles each year, he has supplied puzzles to newspapers including The Times and is the author of many puzzle compilations for publishers around the world.

    2 in stock

    £7.59

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