What's more fun than a crossword puzzle and more addictive than Sudoku? It's Kakuro of course - the latest puzzle craze to sweep the nation. Puzzle Master Timothy E. Parker, known in the Guinness Book of World Records as "the world's most syndicated puzzle compiler," offers 150 brand new puzzles to tickle your brain and transform you from a number-stumbling novice into Kakuro Master.

*Easy, Medium, and Hard puzzles
*Five extra-large Bonus Puzzles
*Rules, Tips and Strategies
*A list of "unique sums" which are the key to unlocking the logic of Kakuro
*A "Complete Sum Chart" listing every possible answer (Kakuro's answer to the crossword puzzle dictionary)

HOW TO PLAY: Kakuro is a crossword with numbers that serve as the clues. The numbers you are given in the black cells represent the sum of that row or column. The goal is to enter digits 1 - 9 in the white cells to add up to the number stated. You cannot enter any number more than once.

Warning: Kakuro may cause you to forget reality, lose all sense of time, miss your bus stop, and wear out all erasers in a three mile radius. Use with caution!

Peter Winkler is at it again. Following the enthusiastic reaction to Mathematical Puzzles: A Connoisseur s Collection, Peter has compiled a new collection of elegant mathematical puzzles to challenge and entertain the reader. The original puzzle connoisseur shares these puzzles, old and new, so that you can add them to your own anthology. This book is for lovers of mathematics, lovers of puzzles, lovers of a challenge. Most of all, it is for those who think that the world of mathematics is orderly, logical, and intuitive-and are ready to learn otherwise!

70 Quick-and-Easy Games to Build Math Skills
Hands-on games to help you reinforce key math skills including addition, subtraction, multiplication, division, fractions, probability, and factors. All games are easy to make and play. Includes reproducibles.

Continuing his series of books on the mathematics of gambling, the author shows how a simple-rule game such as roulette is suited to a complex mathematical model whose applications generate improved betting systems that take into account a player's personal playing criteria. The book is both practical and theoretical, but is mainly devoted to the application of theory. About two-thirds of the content is lists of categories and sub-categories of improved betting systems, along with all the parameters that might stand as the main objective criteria in a personal strategy - odds, profits and losses. The work contains new and original material not published before. The mathematical chapter describes complex bets, the profit function, the equivalence between bets and all their properties. All theoretical results are accompanied by suggestive concrete examples and can be followed by anyone with a minimal mathematical background because they involve only basic algebraic skills and set theory basics. The reader may also choose to skip the math and go directly to the sections containing applications, where he or she can pick desired numerical results from tables. The book offers no new so-called winning strategies, although it discusses them from a mathematical point of view. It does, however, offer improved betting systems and helps to organize a player's choices in roulette betting, according to mathematical facts and personal strategies. It is a must-have roulette handbook to be studied before placing your bets on the turn of either a European or American roulette wheel.

"aha! Gotcha" and "aha! Insight" are here combined as a single volume. The aha! books, as they are referred to by fans of the author Martin Gardner, contain 144 wonderful puzzles from the reigning king of recreational mathematics. In this combined volume, you will find puzzles ranging over geometry, logic, probability, statistics, number,time, combinatorics, and word play. Gardner calls these puzzles aha! problems. He explains that aha! problems "seem difficult, and indeed are difficult if you go about trying to solve them in traditional ways. But if you can free your mind from standard problem solving techniques, you may be receptive to an aha! reaction that leads immediately to a solution. Don't be discouraged if, at first, you have difficulty with these problems. Try your best to solve each one before you read the answer. After a while you will begin to catch the spirit of offbeat , nonlinear thinking, and you may be surprised to find your aha! ability improving." Studies show that persons who possess a high aha! ability are all intelligent to a moderate level, but beyond that level there seems to be no correlation between high intelligence and aha! thinking. So dig into some of the puzzles in this book, and prepare yourself for an aha! experience.

The idea of this book is to help build confidence with maths via a series of tests and puzzles.  After a gentle 'warm-up' section, the puzzles and tests get progressively more challenging over the course of the book.  There is a hints section for readers who get stuck, as well as a complete set of answers for every test at the back of the book.

After the 'warm-up' section, there are puzzles and tests on 'lateral thinking', 'fun with numbers',  'logic puzzles', 'geometrical puzzles' and 'difficult puzzles'. Readers will soon become familiar and comfortable with a range of tricks and tests, from magic number squares to Fibonacci numbers.

This book discusses how to design good geometric puzzles: two-dimensional dissection puzzles, polyhedral dissections, and burrs. It outlines major categories of geometric puzzles and provides examples, sometimes going into the history and philosophy of those examples. The author presents challenges and thoughtful questions, as well as practical design and woodworking tips to encourage the reader to build his own puzzles and experiment with his own designs. Aesthetics, phychology, and mathematical considerations all factor into the definition of the quality of a puzzle.

Figure out the answers to dozens of riddles by thinking mathematically and practicing addition. Softcover. 48 pages. Grades K-5.