Indeholder "Acknowledgements", "Introducing Soames and Watsup", "Note on Units", "The Scandal of the Stolen Sovereign", "Number Curiosity", "Track Position", "Soames Meets Watsup", "Geomagic Squares", "What Shape is an Orange Peel?", "How to Win the Lottery", "The Green Socks Caper Incident", "Consecutive Cubes", "Adonis Asteroid Mousterian", "Two Square Quickies", "Caught Clean-Handed", "The Adventure of the Cardboard Boxes", "The RATS Sequence", "Birthdays Are Good for You", "Mathematical Dates", "The Hound of the Basketballs", "Digital Cubes", "Narcissistic Numbers", "Piphilology, Piems and Pilish", "Clueless!", "A Brief History of Sudoku", "Hexakosioihexecontahexaphobia", "Once, Twice, Thrice", "Conservation of Luck", "The Case of the Face-Down Aces", "Confused Parents", "Jigsaw Paradox", "The Catflap of Fear", "Pancake Numbers", "The Soup Plate Trick", "Mathematical Haiku", "The Case of the Cryptic Cartwheel", "Two by Two", "The V-shaped Goose Mystery", "Eelish Mnemonics", "Amazing Squares", "The Thirty-Seven Mystery", "Average Speed", "Four Clueless Pseudoku", "Sums of Cubes", "The Puzzle of the Purloined Papers", "Master of All He Surveys", "Another Number Curiosity", "The Opaque Square Problem", "Opaque Polygons and Circles", "πr^2?", "The Sign of One", "Progress on Prime Gaps", "The Odd Goldbach Conjecture", "Prime Number Mysteries", "The Optimal Pyramid", "The Sign of One: Part Two", "Initial Confusion", "Euclid's Doodle", "Euclidean Efficiency", "123456789 Times X", "The Sign of One: Part Three", "Taxicab Numbers", "The Wave of Translation", "Riddle of the Sands", "Eskimo π", "The Sign of One: Part Four -- Concluded", "Seriously Deranged", "Tossing a Fair Coin Isn't Fair", "Playing Poker by Post", "Eliminating the Impossible", "Mussel Power", "Proof that the World is Round", "The Riddle of the Golden Rhombus", "A Powerful Arithmetic Sequence", "Why Do Guinness Bubbles Go Downwards?", "Random Harmonic Series", "The Dogs That Fight in the Park", "How Tall is That Tree?", "Why Do My Friends Have More Friends Than I Do?", "Isn't Statistics Wonderful?", "The Adventure of the Six Guests", "How to Write Very Big Numbers", "Graham's Number", "Can't Wrap My Head Around It", "The Affair of the Above-Average Driver", "The Mousetrap Cube", "Sierpiński Numbers", "James Joseph Who?", "The Baffleham Burglary", "The Quadrillionth Digit of π", "Is π Normal?", "A Mathematician, a Statistician, and an Engineer...", "Lakes of Wada", "Fermat's Last Limerick", "Malfatti's Mistake", "Square Leftovers", "Coin Tossing over the Phone", "How to Stop Unwanted Echoes", "The Enigma of the Versatile Tile", "The Thrackle Conjecture", "Bargain with the Devil", "A Tiling That Is Not Periodic", "The Two Colour Theorem", "The Four Colour Theorem in Space", "Comical Calculus", "The Erdős Discrepancy Problem", "The Greek Integrator", "Sums of Four Cubes", "Why the Leopard Got Its Spots", "Polygons Forever", "Top Secret", "The Adventure of the Rowing Men", "The Fifteen Puzzle", "A Tricky Six Puzzle", "As Difficult as ABC", "Rings of Regular Solids", "The Square Peg Problem", "The Impossible Route", "The Final Problem", "The Return", "The Final Solution", "The Mysteries Demystified".

"Acknowledgements" handler om ???
"Introducing Soames and Watsup" handler om ???
"Note on Units" handler om ???
"The Scandal of the Stolen Sovereign" handler om ???
"Number Curiosity" handler om ???
"Track Position" handler om ???
"Soames Meets Watsup" handler om ???
"Geomagic Squares" handler om ???
"What Shape is an Orange Peel?" handler om ???
"How to Win the Lottery" handler om ???
"The Green Socks Caper Incident" handler om ???
"Consecutive Cubes" handler om ???
"Adonis Asteroid Mousterian" handler om ???
"Two Square Quickies" handler om ???
"Caught Clean-Handed" handler om ???
"The Adventure of the Cardboard Boxes" handler om ???
"The RATS Sequence" handler om ???
"Birthdays Are Good for You" handler om at man ved at fejre mange fødselsdage kan blive gammel.
"Mathematical Dates" handler om ???
"The Hound of the Basketballs" handler om ???
"Digital Cubes" handler om 153 = 1^3 + 5^3 + 3^3 og de tre andre af samme slags: 370, 371, 407.
"Narcissistic Numbers" handler om ???
"Piphilology, Piems and Pilish" handler om ???
"Clueless!" handler om ???
"A Brief History of Sudoku" handler om ???
"Hexakosioihexecontahexaphobia" handler om ???
"Once, Twice, Thrice" handler om ???
"Conservation of Luck" handler om ???
"The Case of the Face-Down Aces" handler om ???
"Confused Parents" handler om ???
"Jigsaw Paradox" handler om ???
"The Catflap of Fear" handler om ???
"Pancake Numbers" handler om ???
"The Soup Plate Trick" handler om ???
"Mathematical Haiku" handler om ???
"The Case of the Cryptic Cartwheel" handler om ???
"Two by Two" handler om ???
"The V-shaped Goose Mystery" handler om ???
"Eelish Mnemonics" handler om ???
"Amazing Squares" handler om ???
"The Thirty-Seven Mystery" handler om ???
"Average Speed" handler om ???
"Four Clueless Pseudoku" handler om ???
"Sums of Cubes" handler om ???
"The Puzzle of the Purloined Papers" handler om ???
"Master of All He Surveys" handler om ???
"Another Number Curiosity" handler om ???
"The Opaque Square Problem" handler om ???
"Opaque Polygons and Circles" handler om ???
"πr^2?" handler om ???
"The Sign of One" handler om ???
"Progress on Prime Gaps" handler om ???
"The Odd Goldbach Conjecture" handler om ???
"Prime Number Mysteries" handler om ???
"The Optimal Pyramid" handler om ???
"The Sign of One: Part Two" handler om ???
"Initial Confusion" handler om ???
"Euclid's Doodle" handler om ???
"Euclidean Efficiency" handler om køretid for euklids algoritme, worst case og porter's constant.
"123456789 Times X" handler om et tal, der ganget med et-cifrede tal, der ikke er delelige med 3, indeholder alle cifre fra 1-9.
"The Sign of One: Part Three" handler om ???
"Taxicab Numbers" handler om ???
"The Wave of Translation" handler om ???
"Riddle of the Sands" handler om ???
"Eskimo π" handler om ???
"The Sign of One: Part Four -- Concluded" handler om ???
"Seriously Deranged" handler om ???
"Tossing a Fair Coin Isn't Fair" handler om ???
"Playing Poker by Post" handler om ???
"Eliminating the Impossible" handler om ???
"Mussel Power" handler om ???
"Proof that the World is Round" handler om ???
"The Riddle of the Golden Rhombus" handler om ???
"A Powerful Arithmetic Sequence" handler om ???
"Why Do Guinness Bubbles Go Downwards?" handler om ???
"Random Harmonic Series" handler om ???
"The Dogs That Fight in the Park" handler om ???
"How Tall is That Tree?" handler om ???
"Why Do My Friends Have More Friends Than I Do?" handler om ???
"Isn't Statistics Wonderful?" handler om ???
"The Adventure of the Six Guests" handler om ???
"How to Write Very Big Numbers" handler om ???
"Graham's Number" handler om ???
"Can't Wrap My Head Around It" handler om ???
"The Affair of the Above-Average Driver" handler om ???
"The Mousetrap Cube" handler om ???
"Sierpiński Numbers" handler om ???
"James Joseph Who?" handler om ???
"The Baffleham Burglary" handler om ???
"The Quadrillionth Digit of π" handler om ???
"Is π Normal?" handler om ???
"A Mathematician, a Statistician, and an Engineer..." handler om ???
"Lakes of Wada" handler om ???
"Fermat's Last Limerick" handler om ???
"Malfatti's Mistake" handler om ???
"Square Leftovers" handler om ???
"Coin Tossing over the Phone" handler om ???
"How to Stop Unwanted Echoes" handler om ???
"The Enigma of the Versatile Tile" handler om ???
"The Thrackle Conjecture" handler om ???
"Bargain with the Devil" handler om ???
"A Tiling That Is Not Periodic" handler om ???
"The Two Colour Theorem" handler om ???
"The Four Colour Theorem in Space" handler om ???
"Comical Calculus" handler om ???
"The Erdős Discrepancy Problem" handler om ???
"The Greek Integrator" handler om ???
"Sums of Four Cubes" handler om ???
"Why the Leopard Got Its Spots" handler om ???
"Polygons Forever" handler om ???
"Top Secret" handler om ???
"The Adventure of the Rowing Men" handler om ???
"The Fifteen Puzzle" handler om ???
"A Tricky Six Puzzle" handler om ???
"As Difficult as ABC" handler om ???
"Rings of Regular Solids" handler om ???
"The Square Peg Problem" handler om ???
"The Impossible Route" handler om ???
"The Final Problem" handler om ???
"The Return" handler om ???
"The Final Solution" handler om ???
"The Mysteries Demystified" handler om ???

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