Double Trouble Sudoku
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Double Trouble Sudoku
This brand-new sudoku variant will have logic lovers seeing double! Instead of appearing only once in every row and column, each number appears TWICE. And instead of the usual three-by-three areas, these puzzles have irregular shapes. These twists add spice to the solving, variety to the sudoku, and make every puzzle a unique challenge for your eyes and mind.
Double Trouble Puzzles
Author: Nexus Numerologist
language: en
Publisher: Independently Published
Release Date: 2024-02-10
Double Trouble Puzzles Double Trouble Puzzles is a fascinating book comprising 200 spectacular, really ingenious Sudoku puzzles at a hard level of difficulty, and also 100 spellbinding, really compelling Number search puzzles. One must add that this amazing puzzle book was not written for the fainthearted. It is meant for those top rung elite class pundits who are relentlessly seeking new challenges in the puzzle book genre. It has the following enthralling attributes. Contains 200 bewildering Sudoku puzzles. Hard puzzles throughout. Sudoku puzzles open the book Includes 100 dazzling number search puzzles Unique puzzles, and which are found nowhere else. Answers for all the puzzles are included at the back section of the book. Each puzzle type has its answers located immediately after it. One fantastic puzzle per page. The Sudoku puzzles are designed by a Sudoku expert and for all Sudoku pundits. The Number search puzzles are designed by a Number search puzzles guru as well, for all puzzle aficionados Abundant page space for scribbling answers before entering them into the grids. Attractive cover page having a great picture. This departs from the stiff grid patterns already overused on the covers of some other puzzle books. Nice interior design and attractive fonts. Sizable 8.5 inches x 11 inches page dimensions. Cozy book having 376 pages. Great price. . All irrelevancies are excluded from the book, and the puzzles are immediately presented for your challenge, so you become engrossed in solving them right away. A 9 x 9 square grid formation is used throughout the Sudoku puzzles section, comprising 9 rows, 9 columns, and 9 inner boxes. As you probably know by now, assuming you are a Sudoku fan, this means you can enter any number from 1 to 9 into the empty boxes. No number should be repeated either in a row, or in a column, and neither in an inner box. Given those constraints, there is only one correct solution to each puzzle. Just check towards the back of book for all solutions, anytime you need to do so. This book is indeed a collector's item for all Sudoku experts. For the number search puzzles, use a pen, pencil, or any other convenient marker to draw a circle, rectangle, or ellipse round a number once you find it. Since the numbers are expertly hidden, if you don't mark them as you find them, they soon disappear before your eyes, meaning you have to search for them again. Tough luck! While you are occupied with solving the puzzles, you are not only having exciting fun and purposefully entertaining yourself, but you are also steadily acquiring awesome life-building lessons as well as developing important practical skills of deep thinking, problem-solving, planning, and strategy along the way. Buy this Double Trouble Puzzles book. It promises you grandiose delight, insane excitement, and stupendous satisfaction. You will be very happy that you did.
Taking Sudoku Seriously
Author: Jason Rosenhouse
language: en
Publisher: Oxford University Press
Release Date: 2012-01-19
Packed with more than a hundred color illustrations and a wide variety of puzzles and brainteasers, Taking Sudoku Seriously uses this popular craze as the starting point for a fun-filled introduction to higher mathematics. How many Sudoku solution squares are there? What shapes other than three-by-three blocks can serve as acceptable Sudoku regions? What is the fewest number of starting clues a sound Sudoku puzzle can have? Does solving Sudoku require mathematics? Jason Rosenhouse and Laura Taalman show that answering these questions opens the door to a wealth of interesting mathematics. Indeed, they show that Sudoku puzzles and their variants are a gateway into mathematical thinking generally. Among many topics, the authors look at the notion of a Latin square--an object of long-standing interest to mathematicians--of which Sudoku squares are a special case; discuss how one finds interesting Sudoku puzzles; explore the connections between Sudoku, graph theory, and polynomials; and consider Sudoku extremes, including puzzles with the maximal number of vacant regions, with the minimal number of starting clues, and numerous others. The book concludes with a gallery of novel Sudoku variations--just pure solving fun! Most of the puzzles are original to this volume, and all solutions to the puzzles appear in the back of the book or in the text itself. A math book and a puzzle book, Taking Sudoku Seriously will change the way readers look at Sudoku and mathematics, serving both as an introduction to mathematics for puzzle fans and as an exploration of the intricacies of Sudoku for mathematics buffs.