Puslespil

Stand-up mathematician and star of Festival of the Spoken Nerd, Matt Parker presents Things to Make and Do in the Fourth Dimension -- a riotous journey through the possibilities of numbers, with audience participation- Cut pizzas in new and fairer ways!- Fit a 2p coin through an impossibly small hole!- Make a perfect regular pentagon by knotting a piece of paper!- Tie your shoes faster than ever before, saving literally seconds of your life!- Use those extra seconds to contemplate the diminishing returns of an exclamation-point at the end of every bullet-point!- Make a working computer out of dominoes!Maths is a game. This book can be cut, drawn in, folded into shapes and will even take you to the fourth dimension. So join stand-up mathematician Matt Parker on a journey through narcissistic numbers, optimal dating algorithms, at least two different kinds of infinity and more.

This book contains more than 1000 sudokus arranged by level from beginner to expert.

Kakuro are language-free number puzzles that use pure logic and require just simple arithmetic to solve. This book contains 150 kakuros. It takes cue from the belt colors in martial arts: white is for novices, green for intermediates, brown for very accomplished players, and black for those consummate experts who crave a challenge.

. Everything is at stake in this compendium of more than 150 ingenious puzzles, selected to reveal the wonderful diversity of brainteasers that have confounded and intrigued solvers for the last thousand years.

From 'Is there Sex Before Marriage in Austen?' to 'Which important Austen characters never speak?' the Guardian Book Club columnist answers 21 apparently trivial questions that reveal deep and hidden truths about Jane Austen's fictional world

The Ultimate Mathematical Challenge is an engaging and thought-provoking book authored by The UK Mathematics Trust. Published by HarperCollins Publishers in 2018, this book is a must-have for all math enthusiasts. The book is a treasure trove of mathematical puzzles and problems that will challenge your mind and test your problem-solving skills. Each problem is uniquely crafted, offering a stimulating and enriching experience. The Ultimate Mathematical Challenge is more than just a book; it's a journey into the fascinating world of mathematics. Whether you're a seasoned mathematician or a curious learner, this book is guaranteed to provide you with hours of intellectual entertainment. HarperCollins Publishers are proud to be associated with this masterpiece, which has already become a favorite among many readers.

Colour and reveal your musical heroes in these 20 mind-bending puzzles.

Samurai Sudoku Book is a collection of 500 hard Sudoku puzzles overlapping into 100 samurai style. Part of the popular "Logic Puzzles" series, the book is designed to help keep your brain cognitively fit, flexible, and young.Samurai Sudoku are a partial overlapping arrangement of five standard Sudokus. This Samurai Sudoku Book is packed with the following features: Answers to every puzzle are provided at the back of the book.Each puzzle is guaranteed to have only one solution.One puzzles per page (8.5 x 11 inches).Includes free bonus puzzles you can download book (Tons of Sudoku Puzzles for Adults & Seniors) Includes free bonus puzzles you can download book (Word Search With Hidden Message: 102 Puzzles for Adults and Seniors)

Contains more than 500 puzzles of a wide variety of different types. The puzzles are set over three different levels of difficulty to suit every puzzle-lover's ability level.

A bumper collection of 150 different kinds of Sudoku in 495 puzzles.

Kakuro 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.

Hooked on su doku? Then move on up to kakuro!

These logic puzzles provide entertaining variations on Gödel's incompleteness theorems, offering ingenious challenges related to infinity, truth and provability, undecidability, and other concepts. No background in formal logic necessary.

Suguru is a logic puzzle with simple rules and challenging solutions. The task consists of a rectangular or square grid divided into regions.The rules of Suguru are simple, each region must be filled with each of the digits from 1 to the number of cells in the region. Cells with the same digits must not be orthogonality or diagonally adjacent.This Logic Puzzles book is packed with the following features:- 500 Suguru (12x12) Puzzles from Easy to Hard.- Answers to every puzzle are provided.- Each puzzle is guaranteed to have only one solution. Includes free bonus puzzles you can download book (Tons of Sudoku Puzzles for Adults & Seniors) Includes free bonus puzzles you can download book (Word Search With Hidden Message: 102 Puzzles for Adults and Seniors) We hope you enjoy this book, which would also make a great gift for any puzzle lover.

20 tests consisting of 40 puzzles each, focussing mainly on logic puzzles, from Skyscrapers and Number Pyramids to more exotic puzzles like Kropki and Hashi.

Brain teasers for dogs, a riveting book penned by Christina Sondermann, is a must-read for all dog enthusiasts. Published in 2018 by Quiller Publishing Ltd, this book falls under a unique genre that combines pet care with mental stimulation. Sondermann, an experienced dog trainer, brings to the table an exceptional collection of puzzles, games, and exercises designed to challenge your canine companion mentally. These brain teasers not only provide fun and entertainment but also contribute significantly to the overall well-being of your pet. The author's expertise and passion shine through in each chapter, making it a compelling read. So, if you're looking to add a spark of excitement to your dog's routine, Brain teasers for dogs by Christina Sondermann is your go-to guide. Published by Quiller Publishing Ltd, this book is a testament to their commitment to providing high-quality, informative content for pet lovers.

Kakuro are language-free number puzzles that use pure logic and require just simple arithmetic to solve. This book contains 150 kakuros. It takes cue from the belt colors in martial arts: white is for novices, green for intermediates, brown for very accomplished players, and black for those consummate experts who crave a challenge.

Older than Sudoku and played for many years in Japan, Kakuro is best described as a kind of mathematical crossword. This guide features over 100 puzzles of Kakuro. Each puzzle has been hand crafted by a Japanese inventor. It also includes four pages of 'How To', explaining the rules and featuring example puzzles, and a page of number combinations.

Channel your inner M.C. Escher with these brain teaser puzzles!These easily assembled 3D puzzles are each composed of many identical pieces that cleverly fit together to become larger geometric shapes.The cardstock pieces in this kit are pre-cut, so you just pop them out and bend or fold where indicated, then bind them together with a little glue. The step-by-step instructions in the book are very easy to follow and show you how to assemble the individual paper components, then how to assemble them to create the larger interlocking models.This kit includes:A full-color instruction book 165 pre-cut paper pieces that you pop out and assembleThese endlessly entertaining paper puzzles are impossible to put down. They include the following intriguing models:Dodecahedron Bears and Frogs—cute animal "couples" that form a 12-faced geodesic sphere when the pieces are fitted together.Bird and Fish modules that dovetail together to create a seamless 3D form in a nod to Escher's Sky and Water woodcut.A Reversible Dodecahedron that—with the addition of magnets—dramatically inverts itself when tossed into the air!An intricate Pyramid Box conceals a secret inner chamber that is perfect for presenting a small gift to that special someone.The challenging 4-Piece Tetrahedron and 12-Lizard Cube provide a tremendous feeling of satisfaction once all of the pieces finally align into place.Plus many more!Noted Japanese papercraft designer Haruki Nakamura created this wonderful collection of interlocking paper puzzles and toys to intrigue and delight both paper-crafting and puzzle enthusiasts. Each project is a new challenge, and the finished objects are great conversation pieces that look fantastic on your desk or shelf!

The Alan Turing Puzzle Books series has sold over 140,000 copies.

Quiz your family at home with crosswords, puzzles and games. A super-sized challenge for crossword lovers, selected by the Times2 Crossword Editor John Grimshaw.

Presents tough kakuro puzzles.