The vast majority of sudoku puzzles that are labeled "hard," "expert," "challenger," are not really all that difficult. And in a surprising number of cases, they are downright easy. In the "Absolutely Nasty Sudoku" books, you will find puzzles truly worthy of the label "hard." The puzzles increase in difficulty throughout the four books in the series. It ranges from basic and intermediate puzzles and techniques at Level No. 1, to the most advanced techniques at Level No. 4, along with puzzles that require multiple advanced techniques each time.

Challenge your brain at home with these enjoyable puzzles. Specially compiled to provide the most deadly Su Doku challenge, this is the only volume for Su Doku enthusiasts who need a puzzle that really tests their mettle. Prepare yourself for the toughest Su Doku challenge there is. These diabolically difficult Ultimate Killer Su Doku puzzles will really put your brainpower to the test as you 'warm up' with the 100 Deadly Killer puzzles before steeling yourself to take on the 100 Extra Deadly Su Dokus. Are you ready for the challenge? Not for the faint-hearted. The puzzles use the same 9x9 grid as a regular Su Doku, but have an extra mathematical element that multiplies the challenge. The aim is not only to complete every row, column and cube so that it contains the digits 1 to 9, but also to make sure that the outlined sections, called cages, add up to the number given in each cage. Warning: Not suitable for amateur puzzlers!

A massive 300 word search puzzles packaged in a stylish paperback - this is the perfect word search gift book for adults of any age. With a huge mix of fascinating subjects, the 15 x 15 grids are each arranged on their own page and solutions are easily found in the back of the book. Printed in a highly portable format, the book can be taken on your travels or sit neatly on your bedside table.

Calling all comrades! Dial up the detente with this hip and colorful collage featuring 36 retro Eastern Bloc rotary telephones from the collection of designer Troy Litten, all arranged and photographed on authentic Cold War-era textiles and wallpapers. The Eastern Bloc Telephones 500 Piece Jigsaw Puzzle includes a color insert of the puzzle image with information about artist Troy Litten. Galison puzzles are packaged in matte-finish sturdy boxes, perfect for gifting, reuse, and storage. * 500 Pieces, Ribbon Cut * Box Size: 8" x 8" x 2", 203 x 203 x 51 mm * Puzzle Size: 20" x 20", 508 x 508 mm * Includes insert with puzzle image and information about the artist * Puzzle greyboard contains 90% recycled paper. Packaging contains 70% recycled paper and is made responsibly from FSC-certified material. Printed with nontoxic inks.

A massive 300 codeword puzzles packaged in a stylish paperback - this is the perfect codeword gift book for adults of any age. With a mix of 100 easy, 100 medium and 100 hard puzzles, the 13 x 13 grids are each arranged on their own page and solutions are easily found in the back of the book. Printed in a highly portable format, the book can be taken on your travels or sit neatly on your bedside table.

*** Enjoy this fantastic collection of puzzles from the Mail on Sunday. Compiled by Mitchell Symons, these challenging crosswords will test your general knowledge and allow you to build a variety of facts on the tip of your tongue. Perfect for seasoned puzzlers and novices alike, The Mail on Sunday General Knowledge Crosswords 1 are ideal for quiz and crossword lovers.

Grab friends, family, or dive in solo-this fan-designed 1000-piece LEGO(Reg TM) puzzle is a true celebration of the creativity, passion, and imagination of LEGO fans of all ages. This LEGO(Reg TM) puzzle is unlike any that have come before it! These 1000 pieces come together to reveal a stunning LEGO image designed and chosen by . . . the fans! Launched in an online contest on LEGO Ideas, this puzzle features the winning design from a global call for submission and fan vote. Perfect for the whole family, this puzzle showcases the boundless creativity and passion of LEGO fans and builders. BROAD APPEAL: This puzzle is perfect for all types of LEGO fans-from hardcore LEGO lovers to casual builders to parents sharing their love of the brand with their children. CREATIVE AND CHALLENGING: This delightful 1000-piece puzzle will test your skills as it showcases the creative spirit integral to the LEGO brand. Perfect for: Ages 9+, adult LEGO fans, LEGO fans, gift givers, puzzlers LEGO, the LEGO logo, and the Brick and Knob configurations are trademarks of the LEGO Group. (C)2022 The LEGO Group. All rights reserved.

Explore exciting iconic locations and scenes with your favorite comics characters in this interactive, all-ages book of mighty Marvel mazes. Accomplish missions and locate key objects along the way while discovering the mysteries of Doctor Strange's Sanctum Sanctorum, the S.H.I.E.L.D. Helicarrier, Wakanda, Asgard, and Doctor Doom's Castle. Follow the Guardians of the Galaxy to Knowhere, help the Avengers fight the Skrulls aboard their flagship, face fearsome Sentinels with the X-Men in days of future past, and more! Brought to life by expert maze creator Sean C. Jackson, each full-color maze is a playful visual delight for Marvel fans everywhere.

Challenge your brain with these enjoyable puzzles. The latest puzzle book in The Times Fiendish Su Doku series - previously unpublished, quality Su Doku puzzles. Includes 180 Fiendish and 20 Super Fiendish puzzles. You don't need to be a mathematical genius to solve the treacherous puzzles in this collection of Fiendishly difficult puzzles - it's simply a question of logic. Since the first Su Doku puzzle appeared in The Times in November 2004, this classic game of logic has become a phenomenon, with over 5 million copies of the Times Su Doku series sold worldwide. Perfect for the advanced solver in need of a constant supply of ultra-difficult puzzles, and guaranteed to provide hours of mind-stretching entertainment.

Put your Manchester United knowledge to the test with the ultimate quiz book for Red Devils' fans. Do you think you know it all about Manchester United? Could you name the colours the team originally played in? The most decorated player in the club's history? Do you know which sides United have beaten most, and vice versa? Or which foreign countries have supplied the most United players? Whatever your area of interest or depth of knowledge, this expertly assembled quiz will have some testing questions for you. From the club's earliest days right through to the Busby Babes, the glory years under Sir Alex Ferguson and beyond, Think You Know It All? Manchester United will challenge your knowledge of players, managers, records and more. Featuring an entertaining mix of questions and puzzles, this is the perfect test for new and veteran United fans alike. Proving you know it all about your club has never been such fun - or so tricky.

The Forth Rail Bridge is one of the world's great engineering feats, and one of its most well-known. When it opened in 1890, the cantilevered bridge had one of the world's longest spans, at 541 metres. Its distinctive and innovative design marks it as an important milestone in bridge construction during the period when railways came to dominate long-distance land travel. Spanning the estuary of one of the country's great rivers, the Forth Bridge revolutionised travel within Scotland, and it continues to carry and freight more than 130 years after its official opening. This view of the Forth Rail Bridge features the Gresley A4 Class Pacific Plover locomotive and was painted by Terence Cuneo (1907-1996) for British Railways in 1952. Cuneo withstood gales of over 50 mph as he sketched the scene from a girder above the track.

A quiz in a grid. Test your memory and all round general knowledge with these 80 new crosswords. Not only for crossword lovers, but quizzers of all abilities. This Crossword appears weekly in the Monday edition of The Times. The puzzles offer a fair challenge for all quiz lovers. The clues are less testing than the Sunday Times General Knowledge crosswords, but stretch your memory and brain cells, and provide hours of entertainment.

Galison's Seek Magic Every Day 128 Piece Matchbox Puzzle combines themes of the cosmos and self-reflection with florals to create a beautiful piece of puzzle art. Makes for a wonderful gift to give to the puzzler in your life! * 128 Pieces * Foil stamped box and puzzle * 2-piece matchbox construction box * Box: 5 x 3.25 x 1.32", 127 x 82.55 x 33.5 mm * Puzzle: 8.825 x 5.75", 224 x 146 mm

"Ah, I m Pingree. We meet again. Splendid. Won t you sit down?"
I looked around David s room. Short of the library stacks, I had never seen so many books piled into a single room. Where could I sit down? Every square inch of horizontal surface was covered. Books, papers, notes, manuscripts all congregated in random and chaotic disorder.

This small encounter and the snapshot of the protagonist on the cover of this book introduce the reader to David E. Pingree, the eminent classicist, Orientalist, historian of ancient science, and member of the Department of the History of Mathematics at Brown University. This is a book of his stories, retold by Phil Davis, award-winning author and raconteur par excellence, who reconstructs them from letters and many conversations with his friend Pingree.

The stories trace connections between ancient characters, historical and mythical, and recreate a world in which the pursuit of knowledge for its own sake leads to unexpected pleasures and associations. They capture a world best described by Saul Lieberman s quip about Gershom Scholem s great work on the Kabala: "Trash is trash; but the study of trash is scholarship," and David Pingree s imagined response, "Yes, but there s always something of value to be learned."

The book is dedicated to preserving and promoting the specialized knowledge and thoughts of David Pingree, a truly remarkable person and to inspire readers to follow academic tradition and at the same time explore unusual connections.

Are you smarter than a Singaporean ten-year-old? Can you beat Sherlock Holmes? If you think the answer is yes - I challenge you to solve my problems. Here are 125 of the world's best brainteasers from the last two millennia, taking us from ancient China to medieval Europe, Victorian England to modern-day Japan, with stories of espionage, mathematical breakthroughs and puzzling rivalries along the way. Pit your wits against logic puzzles and kinship riddles, pangrams and river-crossing conundrums. Some solutions rely on a touch of cunning, others call for creativity, others need mercilessly logical thought. Some can only be solved be 2 per cent of the population. All are guaranteed to sharpen your mind. Let's get puzzling!

Acclaimed Japanese mathematics instructor Tetsuya Miyamoto developed KenKen in 2004 and it has since taken over the puzzling world. It takes a page from karate, another Japanese art, as each title is graded by colour: White for easy, Green for medium, Brown for hard & this one, Black Belt, for the super-tough! All in a handy-sized format, so puzzle lovers can play this addictive game wherever the mood takes them! Are you experienced? These are the hardest KenKen for super-solvers only! Acclaimed Japanese mathematics instructor Tetsuya Miyamoto developed KenKen in 2004 with the goal of improving his students' math and logic skills. This understandable, fun and challenging puzzle quickly became a favourite leisure activity for all ages throughout Japan and then for millions of players worldwide. Now it's carried in the "New York Times", "Los Angeles Times", "Chicago Tribune", "The Times", "Scholastic" classroom magazines and more. This book contains 300 puzzles.

1000 pieces Finished size is 24 x 18 inches (61 x 46 cm) Quality design & easy to handle pieces Features a beautiful, full-color photograph of Gyeongbok Palace in Seoul, Korea Commonly referred to as the Northern Palace, Gyeongbok Palace was built in 1395 in the heart of Seoul (the then newly-appointed capital city). It is the first and largest of Korea's Five Grand Palaces built during the Joseon Dynasty (1392-1910) and remains one of Korea's top sights.