Here is a puzzle book that will have even the masters begging for mercy--and for more. Almost Impossible Number Puzzles has more than 275 puzzles offering a variety of challenges including Sudoku and Kakuro. It's a perfect take-along for brave men and women. CAUTION: Almost Impossible Number Puzzles may strain the brain and induce pleasure.

Here is a puzzle book that will have even the masters begging for mercy--and for more. Almost Impossible Word Puzzles has more than 180 puzzles that will have puzzlers doing a one-eighty and rethinking the way they tackle puzzles. Challenges include anagrams, cryptograms, Wordoku, soundalikes, coded crosswords, and much more. CAUTION: Almost Impossible Number Puzzles may strain the brain and induce pleasure.

What a bargain! At more than 700 puzzle-packed pages, this huge, value-priced collection should keep any solver happy...and busy for a very long time. It contains brain-busting challenges of almost every type: math logic problems for the numerically inclined; absolutely amazing lateral thinking conundrums; really great critical thinking bafflers; and mind-boggling word puzzles. Here's just a small sample of what's inside: The 22nd and 24th presidents of the United States had the same mother and the same father, but were not brothers. How could this be so? Stumped? That's because it's one man--Grover Cleveland--who was reelected after skipping a term. And that's just an easy warm-up!

"Twelve-year-old William Wenton is a puzzle-solving genius. He lives with his family in a quiet Norwegian town. They used to live in England, but eight years ago his family suddenly packed up, moved away, and even changed their last name. Neither of his parents will offer an explanation or tell William why he has to keep his talent for solving codes and puzzles a secret. But then a special exhibit comes to the local museum: the Impossible Puzzle. The experts say it is unsolvable, but William's sure that he can crack it if he gets a chance"--Amazon.com.

This book contains a multitude of challenging problems and solutions that are not commonly found in classical textbooks. One goal of the book is to present these fascinating mathematical problems in a new and engaging way and illustrate the connections between integrals, sums, and series, many of which involve zeta functions, harmonic series, polylogarithms, and various other special functions and constants. Throughout the book, the reader will find both classical and new problems, with numerous original problems and solutions coming from the personal research of the author. Where classical problems are concerned, such as those given in Olympiads or proposed by famous mathematicians like Ramanujan, the author has come up with new, surprising or unconventional ways of obtaining the desired results. The book begins with a lively foreword by renowned author Paul Nahin and is accessible to those with a good knowledge of calculus from undergraduate students to researchers, and will appeal to all mathematical puzzlers who love a good integral or series.

What kakuro fan could resist this huge collection? Featuring 940 grids in varying levels of difficulty, it has more than enough to satisfy even the most avid enthusiast. Half sudoku, half crossword, language-free kakuro is set to become the next worldwide puzzle phenomenon. The basics are simple: just fill in the empty squares using numbers from 1 to 9 so that the sum of each horizontal set of squares equals the clue on its left, and the sum of each vertical set of squares equals the clue on the top. No number can appear more than once in any sum. An introduction explains all the rules, gives good solving tips, and takes beginners through a sample puzzle.

Praise for David Darling The Universal Book of Astronomy "A first-rate resource for readers and students of popular astronomy and general science. . . . Highly recommended." -Library Journal "A comprehensive survey and . . . a rare treat." -Focus The Complete Book of Spaceflight "Darling's content and presentation will have any reader moving from entry to entry." -The Observatory magazine Life Everywhere "This remarkable book exemplifies the best of today's popular science writing: it is lucid, informative, and thoroughly enjoyable." -Science Books & Films "An enthralling introduction to the new science of astrobiology." -Lynn Margulis Equations of Eternity "One of the clearest and most eloquent expositions of the quantum conundrum and its philosophical and metaphysical implications that I have read recently." -The New York Times Deep Time "A wonderful book. The perfect overview of the universe." -Larry Niven

This book explores the inter-relationships between Agatha Christie and her works to seek the wholeness in the Christie experience. The authors perceive an integration in personal experience and moral and aesthetic values between the woman and her art.

Reproduction of the original: Amusements in Mathematics by Henry Ernest Dudeney

Even the most enthusiastic of maths students probably at one time wondered when exactly it would all prove useful in ‘real life’. Well, maths reaches so far and wide through our world that, love it or hate it, we’re all doing maths almost every minute of every day. David Darling and Agnijo Banerjee go in search of the perfect labyrinth, journey back to the second century in pursuit of ‘bubble maths’, reveal the weirdest mathematicians in history and transform the bewildering into the beautiful, delighting us once again.