From krazydad, constructor of the wildly popular and addictive puzzles published in The New York Times as Two Not Touch, here are 360 of your favorite Star Battle puzzles. These puzzles will provide a healthy diversion for you in these challenging times, and help you make it to the other side with your sanity intact! Includes an instructive and pithy tutorial.

Sudoku is a puzzle grid with nine large blocks divided into its own matrix of nine cells.Rules: i. Each row, column and block must contain one of the numbers from "1" to "9".ii. No number may appear more than once in any row, column, or block.When you have filled the entire grid the puzzle solve

If you like solving Sudoku puzzles you are going to love the Variety Sudoku Puzzle Book Series. Keep the brain active and improve your Sudoku solving skills. Featuring Standard Sudoku, Sudoku-X, Jigsaw Sudoku and Killer Sudoku, the Variety Sudoku Puzzle Book is the ideal companion for both Sudoku beginners and fanatics alike. Please Note: This is part of the Medium difficulty series and may require some advanced solving techniques. * Extra-large 8.5 x 11 Inch Book Size * 100+ Standard Sudoku Puzzles* 100+ Sudoku-X Puzzles* 100+ Jigsaw Sudoku Puzzles* 100+ Killer Sudoku Puzzles* 6 Puzzles per Page* Solutions to all Puzzles Included* Introduction to Each Puzzle Type* Bonus Puzzles Included* Ideal for Intermediate Solvers

Sharpen your mind and strengthen your logic skills with one hundred new Sudoku-by5 logic puzzles, complete with step-by-step deductive solutions for every puzzle. In this series, puzzle difficulty is ranked as "Medium" with numeric rankings ranging from 5 to 8. This book is a new type of Hybrid eBook/Print book. A hybrid book consists of a traditional paperback book, containing puzzles and answers, and an on-line companion set of web pages for the print book, containing detailed step-by-step solutions for each puzzle, instructions for each puzzle type, and other information related to the paperback version of the book. Each print book title has a unique Internet web URL that points the reader directly to the eBook information for that particular print book. You can preview the on-line extras and step-by-step solutions for this particular book at its URL: http://www.grouppuzzles.com/titles/BEAE7D6B/

Broaden your logic skills and identify the difficulty level right for you with a total of forty new Sudoku-by5, Sudoku-Xtreme, Education-Xtreme, HyperSudoku-by5, and HyperSudoku-Xtreme logic puzzles, complete with step-by-step deductive solutions for every puzzle. In this series, puzzle difficulty is ranked as "Medium" with numeric rankings ranging from 5 to 8. This book is a new type of Hybrid eBook/Print book. A hybrid book consists of a traditional paperback book, containing puzzles and answers, and an on-line companion set of web pages for the print book, containing detailed step-by-step solutions for each puzzle, instructions for each puzzle type, and other information related to the paperback version of the book. Each print book title has a unique Internet web URL that points the reader directly to the eBook information for that particular print book. You can preview the on-line extras and step-by-step solutions for this particular book at its URL: http://www.grouppuzzles.com/titles/BF90EFC7/ The "Variation" books are designed to help people discover the puzzle types and difficulty levels that they are most comfortable working. For this reason, they contain puzzles with multiple puzzle types, multiple puzzles levels, or both. Variation books that contain more than one puzzle type will only contain puzzles with similar group sizes so that all of the puzzle types in the book will have the same general puzzle complexity even when the book contains puzzles at many different difficulty levels. The motivation for this type of book organization is to permit everyone to explore which types of puzzles and which difficulty levels they prefer before they look for a book with a large number of puzzles.

The Group Puzzles Publishing Company is a new education-oriented technology-driven publishing company. The company brings together under one roof, teaching experience that spans pre-school to college, decades of computer programming experience, and detailed knowledge of a wide range of existing publication software in order to provide teachers with effective educational materials at unprecedented prices. Like many newer "publishers without presses," we prepare books in a particular area of expertise and rely on other companies to provide manufacturing and distribution of our books. Like many teachers, we have tried to use puzzles to teach logic, and failed. We have, however, used that experience to design guaranteed correct puzzles with step-by-step solutions (rather than simple answer grids) which illustrate for students one possible deductive path to reason from each particular source puzzle to its solution. The availability of step-by-step deductive solutions for every puzzle is the critical missing link for the effective use of logic puzzles in an educational setting, just as working out algebra problems on the board showing all the intermediate steps is a more effective way to teach math than simply presenting students with problems and answers. There are other potential pitfalls to teaching logic using puzzles that are discussed in detail on our web site: http://www.grouppuzzles.com We believe that encouraging students to learn deductive reasoning is one the more pressing problems in the education system today. We also believe that one of the most important reasons why it is often not taught effectively is that there are simply not enough good educational materials available for teachers to use. We know that it is hard to make logic fun and to encourage students to practice logic regularly, which is why our focus is on puzzles. Our goal is to make costs as low as possible for teachers by specifying explicitly in our books, eBooks, and daily web site puzzles, that teachers may photocopy and use puzzles and solutions in their classes without any hassle or extra cost. There are no copyright, permission, or registration hurdles, and the answer to most objections posed by a school administrator will be found on the copyright page of the book in question. Teachers should explore the daily puzzles on the web site and try printing out puzzles at several different sizes and difficulty levels that you think might be appropriate for your class. Puzzles showing the step number at which an empty cell value can be deduced are particularly useful in class room settings with students that are not particularly familiar with sudoku-type logic puzzles.

Would you like to increase the effectiveness of your brain while you have fun? Increase the effectiveness of your brain function with Sudoku puzzles. What if you could reduce your chances of Dementia or Alzheimer's disease by solving Sudoku puzzles? According to the University of Edinburgh, UK, research has found that Sudoku can trigger "survival genes" in the brain that normally lay dormant. PencilPress team has been compiling and publishing puzzles for over two decades. By using his collection of sudoku books you will experience improved brain functions such as concentration, logical thinking and memory. Pick up your copy today by clicking on the BUY NOW button at the top of this page.