His yearly gatherings of short and inventive problems were easily his most anticipated math columns. Loyal readers would savor the wit and elegance of his explorations in physics, probability, topology, and chess, among others. Grouped by subject and arrayed from easiest to hardest, the puzzles gathered here, which complement the lengthier, more involved problems in The Colossal Book of Mathematics, have been selected by Gardner for their illuminating; and often bewildering; solutions. Filled with over 300 illustrations, this new volume even contains nine new mathematical gems that Gardner, now ninety, has been gathering for the last decade. No amateur or expert math lover should be without this indispensable volume; a capstone to Gardner's seventy-year career.

    There are also against-the-clock time challenges and a scoreboard to help you measure your growing skill.The definitive guide to the fiendishly addictive number puzzle.

    Here he presents a hand-picked selection of 100 crosswords which originally appeared in the paper between 1992 and 2001. These original and distinctive puzzles include 85 challenging cryptics and 15 taxing themed crosswords.

    And when they say “made,” they mean literally handmade—unlike the computer-generated puzzles found in other American Sudoku products. And that’s one of the features that makes THE ORIGINAL SUDOKU BOOK 2— and THE ORIGINAL SUDOKU, published between seasons and already with 115,000 copies in print—unique. The books celebrate the compulsive joy of Sudoku with symmetry, smartness, and elegance. They invite you to match wits with the experts, to step into the 81-cell arena with a puzzle maker who has fiendishly anticipated your next step. Fun without frustration. Other features? More all-new puzzles—over 300, arranged from “Easy” to “Very Hard.” The same chunky, easy-to-tote format, because once addicted you will be toting it around everywhere. An informative introduction that shows you how to approach and solve the puzzles. Plus an entirely new idea—an unprecedented tutorial on how to create your very own handmade Sudoku puzzles. The obsession continues.

    Highly entertaining, the puzzles get harder as you go, so if you get stuck, take a look at the solving hints that may help you come up with the answers.Cracking the code is fun. Reading the quotations is just as enjoyable!

    And because each book has an amazing 300 puzzles, the fun can go on for hours.

    Sudoku fans--who can never get enough of their favorite pastime--will be happily occupied for hours.

    Now, for the first time, seventy-five of the greatest Sunday puzzles from legendary editor Will Shortz are available in a compact volume, easy to carry in a handbag, briefcase, or backpack. So whether you're a longtime fan of the Sunday crossword or have never given it a whirl, you'll find these puzzles--each packed full of inventive clues, themes, titles, and jokes--simply perfect for a lazy Sunday afternoon.

    And because each book has an amazing 300 puzzles, the fun can go on for hours.

    Each maze in this collection travels through an amusement park and offers two ways for the reader to follow, an easy route and a more difficult one, and includes various objects to look for in each spread.

    Su Doku - the completely compulsive number-placing puzzle.