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Sudoku X Puzzles For Adults
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Download or read book Sudoku X written by Christopher Monckton and published by Justin, Charles & Co.. This book was released on 2005-10-25 with total page 161 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sudoku is the new number puzzle craze sweeping the nation, and Sudoku X is the only puzzle collection to add diagonal play to the Sudoku formula.
Book Synopsis 250 Easy Sudoku X 9x9 by : James Forest
Download or read book 250 Easy Sudoku X 9x9 written by James Forest and published by Independently Published. This book was released on 2019-01-09 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sometimes classic also means superior. Sudoku X is a favorite pastime of many people the whole world over. In the years since the puzzles first reached monumental popularity, many puzzle makers have tried to experiment with and push the genre forward, crafting puzzles that are different and unique and that redefine what a sudoku puzzle can be. Among sudoku puzzle books, you will find plenty of variety, plenty of Sudoku X books for adults that you can turn to for a fresh experience. Sometimes, however, you just want the Sudoku X puzzle, something reminiscent of the sudoku puzzles you first did when you were falling in love with sudoku itself. What's wrong with the classics, right? If you are someone who has looked back fondly on the sudoku puzzles of years gone by, then Sudoku X Puzzles is the sudoku book for you. You can look back on all the wonderful hours you have spent playing the sudoku puzzles that you enjoy the most, the ones that are not quite simple but that are also never convoluted. The Sudoku X puzzles that you enjoy are the ones that don't feel the need to distract you with flair or fireworks. You want sudoku puzzles that are comfortable with their own straightforwardness! We are right there with you, right there filling in numbers, right there plotting out moves, and we want you to know that we have created this book because we share your passion for great Sudoku X puzzles. This is the Sudoku X puzzle book you have been searching for, a true-blue classic filled with new puzzles. Get solving! The handy size means you can carry your book wherever you roam. Puzzles are pre-checked to eliminate error potential. Other names that are searched for Sudoku: soduko, suduko.
Book Synopsis Sudoku Variants by : Conceptis Puzzles
Download or read book Sudoku Variants written by Conceptis Puzzles and published by Sterling Publishing Company, Inc.. This book was released on 2006-08 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt: Everyone knows sudoku is enjoyable--but these addictive puzzles come in endless variations too! They range from simple to very difficult, and can take almost no time to finish...or require many hours. This entertaining collection showcases a wide range of possibilities, offering solvers who have become accustomed to the standard rules and grids an exciting new challenge. Select from Mega Sudokus that provide a real workout; Diagonals or Odd and Even versions with extra constraints; Sum Sudokus that merge with kakuro; and Multisudoku with overlapping puzzles. There's something for every level--12 x 12 puzzles, ones with irregularly shaped areas, even Mini Sudoku--and lots of fun for everyone.
Book Synopsis 250 Easy to Medium Sudoku X 8x8: Sudoku Puzzle Book for Adults by : James Forest
Download or read book 250 Easy to Medium Sudoku X 8x8: Sudoku Puzzle Book for Adults written by James Forest and published by Independently Published. This book was released on 2019-01-09 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sometimes classic also means superior. Sudoku X is a favorite pastime of many people the whole world over. In the years since the puzzles first reached monumental popularity, many puzzle makers have tried to experiment with and push the genre forward, crafting puzzles that are different and unique and that redefine what a sudoku puzzle can be. Among sudoku puzzle books, you will find plenty of variety, plenty of Sudoku X books for adults that you can turn to for a fresh experience. Sometimes, however, you just want the Sudoku X puzzle, something reminiscent of the sudoku puzzles you first did when you were falling in love with sudoku itself. What's wrong with the classics, right? If you are someone who has looked back fondly on the sudoku puzzles of years gone by, then Sudoku X Puzzles is the sudoku book for you. You can look back on all the wonderful hours you have spent playing the sudoku puzzles that you enjoy the most, the ones that are not quite simple but that are also never convoluted. The Sudoku X puzzles that you enjoy are the ones that don't feel the need to distract you with flair or fireworks. You want sudoku puzzles that are comfortable with their own straightforwardness! We are right there with you, right there filling in numbers, right there plotting out moves, and we want you to know that we have created this book because we share your passion for great Sudoku X puzzles. This is the Sudoku X puzzle book you have been searching for, a true-blue classic filled with new puzzles. Get solving! The handy size means you can carry your book wherever you roam. Puzzles are pre-checked to eliminate error potential. Other names that are searched for Sudoku: soduko, suduko.
Book Synopsis 250 Easy to Medium Sudoku X 9x9 by : James Forest
Download or read book 250 Easy to Medium Sudoku X 9x9 written by James Forest and published by Independently Published. This book was released on 2019-01-09 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sometimes classic also means superior. Sudoku X is a favorite pastime of many people the whole world over. In the years since the puzzles first reached monumental popularity, many puzzle makers have tried to experiment with and push the genre forward, crafting puzzles that are different and unique and that redefine what a sudoku puzzle can be. Among sudoku puzzle books, you will find plenty of variety, plenty of Sudoku X books for adults that you can turn to for a fresh experience. Sometimes, however, you just want the Sudoku X puzzle, something reminiscent of the sudoku puzzles you first did when you were falling in love with sudoku itself. What's wrong with the classics, right? If you are someone who has looked back fondly on the sudoku puzzles of years gone by, then Sudoku X Puzzles is the sudoku book for you. You can look back on all the wonderful hours you have spent playing the sudoku puzzles that you enjoy the most, the ones that are not quite simple but that are also never convoluted. The Sudoku X puzzles that you enjoy are the ones that don't feel the need to distract you with flair or fireworks. You want sudoku puzzles that are comfortable with their own straightforwardness! We are right there with you, right there filling in numbers, right there plotting out moves, and we want you to know that we have created this book because we share your passion for great Sudoku X puzzles. This is the Sudoku X puzzle book you have been searching for, a true-blue classic filled with new puzzles. Get solving! The handy size means you can carry your book wherever you roam. Puzzles are pre-checked to eliminate error potential. Other names that are searched for Sudoku: soduko, suduko.
Book Synopsis 250 Medium Sudoku X 9x9 by : James Forest
Download or read book 250 Medium Sudoku X 9x9 written by James Forest and published by Independently Published. This book was released on 2019-01-09 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sometimes classic also means superior. Sudoku X is a favorite pastime of many people the whole world over. In the years since the puzzles first reached monumental popularity, many puzzle makers have tried to experiment with and push the genre forward, crafting puzzles that are different and unique and that redefine what a sudoku puzzle can be. Among sudoku puzzle books, you will find plenty of variety, plenty of Sudoku X books for adults that you can turn to for a fresh experience. Sometimes, however, you just want the Sudoku X puzzle, something reminiscent of the sudoku puzzles you first did when you were falling in love with sudoku itself. What's wrong with the classics, right? If you are someone who has looked back fondly on the sudoku puzzles of years gone by, then Sudoku X Puzzles is the sudoku book for you. You can look back on all the wonderful hours you have spent playing the sudoku puzzles that you enjoy the most, the ones that are not quite simple but that are also never convoluted. The Sudoku X puzzles that you enjoy are the ones that don't feel the need to distract you with flair or fireworks. You want sudoku puzzles that are comfortable with their own straightforwardness! We are right there with you, right there filling in numbers, right there plotting out moves, and we want you to know that we have created this book because we share your passion for great Sudoku X puzzles. This is the Sudoku X puzzle book you have been searching for, a true-blue classic filled with new puzzles. Get solving! The handy size means you can carry your book wherever you roam. Puzzles are pre-checked to eliminate error potential. Other names that are searched for Sudoku: soduko, suduko.
Book Synopsis Sudoku Compilation Puzzle Book for Adults - Sudoku, Jigsaw Sudoku, Sudoku-X and Jigsaw Sudoku-X by : Christian Demarco
Download or read book Sudoku Compilation Puzzle Book for Adults - Sudoku, Jigsaw Sudoku, Sudoku-X and Jigsaw Sudoku-X written by Christian Demarco and published by . This book was released on 2018-10-26 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt: If you are a Sudoku fan, the Variety Sudoku Compilation Puzzle Books for Adults Series is the ideal companion for puzzle solvers that just want an easy puzzle to solve without having to write in candidates or use any sort of advanced solving techniques. Keep the brain active and improve your Sudoku solving skills. Please Note: This book does not require any advanced solving techniques. 200 Easy Sudoku Puzzles 50 Sudoku Puzzles, 50 Jigsaw Sudoku Puzzles, 50 Sudoku-X Puzzles & 50 Jigsaw Sudoku-X Puzzles Handy 6 x 9 inch Book Layout Easy to read (2 Puzzles per Page) No Advanced Solving Techniques Required Ideal For Beginners Solutions Included Standard Sudoku: In our classic Sudoku puzzles, the grid is 9 cells wide and 9 cells deep. The lines of squares running horizontally are called rows, and the lines running vertically are called columns. The grid is further divided by thicker lines into nine 3 X 3 square boxes. The aim of the puzzle is to fill the blank cells with the correct numbers. Each row, column and box must end up containing all of the numbers from 1 to 9. Each number can only appear once in any row, column or box. Jigsaw Sudoku: In Jigsaw Sudoku, instead of the cells being divided into 3x3 boxes, the cells are split into irregular shapes that all contain 9 cells. Much like regular Sudoku, the aim of the puzzle is to fill the blank squares with the correct numbers. Each row, column and irregular shape must end up containing all of the numbers from 1 to 9. Each number can only appear once in a row, column or irregular shape. Sudoku-X: Sudoku-X follows the same rules as a standard Sudoku puzzle, with the only difference being the cross of shaded squares running from corner to corner, which must also contain one instance of the numbers 1-9. Jigsaw Sudoku-X: Jigsaw Sudoku-X puzzles share the same rules as both Jigsaw Sudoku and Sudoku-X. Every row, column, irregular shape and shaded diagonal line must end up containing all the numbers 1-9, with only one instance of each number allowed in any row, column, irregular shape and shaded diagonal line.
Book Synopsis 250 Hard Sudoku X 8x8 by : James Forest
Download or read book 250 Hard Sudoku X 8x8 written by James Forest and published by Independently Published. This book was released on 2019-01-09 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sometimes classic also means superior. Sudoku X is a favorite pastime of many people the whole world over. In the years since the puzzles first reached monumental popularity, many puzzle makers have tried to experiment with and push the genre forward, crafting puzzles that are different and unique and that redefine what a sudoku puzzle can be. Among sudoku puzzle books, you will find plenty of variety, plenty of Sudoku X books for adults that you can turn to for a fresh experience. Sometimes, however, you just want the Sudoku X puzzle, something reminiscent of the sudoku puzzles you first did when you were falling in love with sudoku itself. What's wrong with the classics, right? If you are someone who has looked back fondly on the sudoku puzzles of years gone by, then Sudoku X Puzzles is the sudoku book for you. You can look back on all the wonderful hours you have spent playing the sudoku puzzles that you enjoy the most, the ones that are not quite simple but that are also never convoluted. The Sudoku X puzzles that you enjoy are the ones that don't feel the need to distract you with flair or fireworks. You want sudoku puzzles that are comfortable with their own straightforwardness! We are right there with you, right there filling in numbers, right there plotting out moves, and we want you to know that we have created this book because we share your passion for great Sudoku X puzzles. This is the Sudoku X puzzle book you have been searching for, a true-blue classic filled with new puzzles. Get solving! The handy size means you can carry your book wherever you roam. Puzzles are pre-checked to eliminate error potential. Other names that are searched for Sudoku: soduko, suduko.
Book Synopsis 250 Medium to Hard Sudoku X 8x8 by : James Forest
Download or read book 250 Medium to Hard Sudoku X 8x8 written by James Forest and published by Independently Published. This book was released on 2019-01-09 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sometimes classic also means superior. Sudoku X is a favorite pastime of many people the whole world over. In the years since the puzzles first reached monumental popularity, many puzzle makers have tried to experiment with and push the genre forward, crafting puzzles that are different and unique and that redefine what a sudoku puzzle can be. Among sudoku puzzle books, you will find plenty of variety, plenty of Sudoku X books for adults that you can turn to for a fresh experience. Sometimes, however, you just want the Sudoku X puzzle, something reminiscent of the sudoku puzzles you first did when you were falling in love with sudoku itself. What's wrong with the classics, right? If you are someone who has looked back fondly on the sudoku puzzles of years gone by, then Sudoku X Puzzles is the sudoku book for you. You can look back on all the wonderful hours you have spent playing the sudoku puzzles that you enjoy the most, the ones that are not quite simple but that are also never convoluted. The Sudoku X puzzles that you enjoy are the ones that don't feel the need to distract you with flair or fireworks. You want sudoku puzzles that are comfortable with their own straightforwardness! We are right there with you, right there filling in numbers, right there plotting out moves, and we want you to know that we have created this book because we share your passion for great Sudoku X puzzles. This is the Sudoku X puzzle book you have been searching for, a true-blue classic filled with new puzzles. Get solving! The handy size means you can carry your book wherever you roam. Puzzles are pre-checked to eliminate error potential. Other names that are searched for Sudoku: soduko, suduko.
Book Synopsis 250 Medium to Hard Sudoku X 9x9 by : James Forest
Download or read book 250 Medium to Hard Sudoku X 9x9 written by James Forest and published by Independently Published. This book was released on 2019-01-09 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sometimes classic also means superior. Sudoku X is a favorite pastime of many people the whole world over. In the years since the puzzles first reached monumental popularity, many puzzle makers have tried to experiment with and push the genre forward, crafting puzzles that are different and unique and that redefine what a sudoku puzzle can be. Among sudoku puzzle books, you will find plenty of variety, plenty of Sudoku X books for adults that you can turn to for a fresh experience. Sometimes, however, you just want the Sudoku X puzzle, something reminiscent of the sudoku puzzles you first did when you were falling in love with sudoku itself. What's wrong with the classics, right? If you are someone who has looked back fondly on the sudoku puzzles of years gone by, then Sudoku X Puzzles is the sudoku book for you. You can look back on all the wonderful hours you have spent playing the sudoku puzzles that you enjoy the most, the ones that are not quite simple but that are also never convoluted. The Sudoku X puzzles that you enjoy are the ones that don't feel the need to distract you with flair or fireworks. You want sudoku puzzles that are comfortable with their own straightforwardness! We are right there with you, right there filling in numbers, right there plotting out moves, and we want you to know that we have created this book because we share your passion for great Sudoku X puzzles. This is the Sudoku X puzzle book you have been searching for, a true-blue classic filled with new puzzles. Get solving! The handy size means you can carry your book wherever you roam. Puzzles are pre-checked to eliminate error potential. Other names that are searched for Sudoku: soduko, suduko.
Book Synopsis 250 Hard Sudoku X 9x9 by : James Forest
Download or read book 250 Hard Sudoku X 9x9 written by James Forest and published by Independently Published. This book was released on 2019-01-09 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sometimes classic also means superior. Sudoku X is a favorite pastime of many people the whole world over. In the years since the puzzles first reached monumental popularity, many puzzle makers have tried to experiment with and push the genre forward, crafting puzzles that are different and unique and that redefine what a sudoku puzzle can be. Among sudoku puzzle books, you will find plenty of variety, plenty of Sudoku X books for adults that you can turn to for a fresh experience. Sometimes, however, you just want the Sudoku X puzzle, something reminiscent of the sudoku puzzles you first did when you were falling in love with sudoku itself. What's wrong with the classics, right? If you are someone who has looked back fondly on the sudoku puzzles of years gone by, then Sudoku X Puzzles is the sudoku book for you. You can look back on all the wonderful hours you have spent playing the sudoku puzzles that you enjoy the most, the ones that are not quite simple but that are also never convoluted. The Sudoku X puzzles that you enjoy are the ones that don't feel the need to distract you with flair or fireworks. You want sudoku puzzles that are comfortable with their own straightforwardness! We are right there with you, right there filling in numbers, right there plotting out moves, and we want you to know that we have created this book because we share your passion for great Sudoku X puzzles. This is the Sudoku X puzzle book you have been searching for, a true-blue classic filled with new puzzles. Get solving! The handy size means you can carry your book wherever you roam. Puzzles are pre-checked to eliminate error potential. Other names that are searched for Sudoku: soduko, suduko.
Book Synopsis Sudoku X Puzzle Book by : Khalid Alzamili
Download or read book Sudoku X Puzzle Book written by Khalid Alzamili and published by . This book was released on 2019-10-10 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of Sudoku X is to fill every row, column, diagonal and box (3x3grid) with numbers 1-9 and each row, column, and box must have each number exactly once. This Sudoku book is packed with the following features: 500 Easy to Hard Sudoku X Puzzles Answers to every puzzle are provided at the back of the book. Each puzzle is guaranteed to have only one solution. Includes free bonus puzzles you can download book (Tons of Sudoku Puzzles for Adults & Seniors) Includes free bonus puzzles you can download book (Word Search With Hidden Message: 102 Puzzles for Adults and Seniors) SUDOKU X Puzzle Book is a collection of 500 sudoku puzzles. Part of the popular "Brain Games for Adults" series, the book is designed to help keep your brain cognitively fit, flexible, and young. SUDOKU X Puzzle Book are sorted into three levels of difficulty (easy, medium and hard).
Book Synopsis Sudoku Compilation Puzzle Book for Adults - Sudoku, Jigsaw Sudoku, Sudoku-X and Jigsaw Sudoku-X by : Christian Demarco
Download or read book Sudoku Compilation Puzzle Book for Adults - Sudoku, Jigsaw Sudoku, Sudoku-X and Jigsaw Sudoku-X written by Christian Demarco and published by . This book was released on 2018-10-26 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt: If you are a Sudoku fan, the Variety Sudoku Compilation Puzzle Books for Adults Series is the ideal companion for puzzle solvers that just want an easy puzzle to solve without having to write in candidates or use any sort of advanced solving techniques. Keep the brain active and improve your Sudoku solving skills. Please Note: This book does not require any advanced solving techniques. 200 Easy Sudoku Puzzles 50 Sudoku Puzzles, 50 Jigsaw Sudoku Puzzles, 50 Sudoku-X Puzzles & 50 Jigsaw Sudoku-X Puzzles Handy 6 x 9 inch Book Layout Easy to read (2 Puzzles per Page) No Advanced Solving Techniques Required Ideal For Beginners Solutions Included Standard Sudoku: In our classic Sudoku puzzles, the grid is 9 cells wide and 9 cells deep. The lines of squares running horizontally are called rows, and the lines running vertically are called columns. The grid is further divided by thicker lines into nine 3 X 3 square boxes. The aim of the puzzle is to fill the blank cells with the correct numbers. Each row, column and box must end up containing all of the numbers from 1 to 9. Each number can only appear once in any row, column or box. Jigsaw Sudoku: In Jigsaw Sudoku, instead of the cells being divided into 3x3 boxes, the cells are split into irregular shapes that all contain 9 cells. Much like regular Sudoku, the aim of the puzzle is to fill the blank squares with the correct numbers. Each row, column and irregular shape must end up containing all of the numbers from 1 to 9. Each number can only appear once in a row, column or irregular shape. Sudoku-X: Sudoku-X follows the same rules as a standard Sudoku puzzle, with the only difference being the cross of shaded squares running from corner to corner, which must also contain one instance of the numbers 1-9. Jigsaw Sudoku-X: Jigsaw Sudoku-X puzzles share the same rules as both Jigsaw Sudoku and Sudoku-X. Every row, column, irregular shape and shaded diagonal line must end up containing all the numbers 1-9, with only one instance of each number allowed in any row, column, irregular shape and shaded diagonal line.
Book Synopsis X Sudoku Books For Adults by : Panda Puzzle Book
Download or read book X Sudoku Books For Adults written by Panda Puzzle Book and published by . This book was released on 2019-10-26 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sudoku puzzles are a proven method for enhancing logic skills. As a logic puzzle, Sudoku is also a great brain game. If you play Sudoku everyday, you'll soon begin to see improvements within your concentration and overall brain power. You could reduce your probabilities of Dementia or Alzheimer's simply by solving Sudoku puzzles. By using this selection of sudoku puzzle books you would experience enhanced brain capabilities for example focus, logical thinking and memory. Sudoku X follows exactly the same guidelines as the standard 9x9 Sudoku puzzle, with the only difference is the cross of shaded squares running from all of four corners to the center square, which should also contain one instance of the numbers 1-9. The goal of the puzzle is to complete the blank squares with the correct numbers. All rows, columns, boxes and also shaded diagonals should end up containing all of the numbers from 1 to 9. Each number can only appear once in a row, column, box and shaded diagonal line. To assist you on the way, a few of the cells have already been filled in with a number. Book features: This book contains 200 Sudoku X Puzzles Large print Sudoku X Books. Sudoku grids are large, very easy to read, and fill out. Large and Easy To Read Font 2 puzzles per page, solving could be easy on your eyes An answer key for those sudoku puzzle Puzzles are printed on high quality white paper, size 8,5 x 11 inches A simple instructions for beginners Perfect puzzle book as a special gift Choose your book today by clicking on the BUY NOW button at the top of this page.
Book Synopsis 250 Easy Sudoku X 8x8 by : James Forest
Download or read book 250 Easy Sudoku X 8x8 written by James Forest and published by Independently Published. This book was released on 2019-01-09 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sometimes classic also means superior. Sudoku X is a favorite pastime of many people the whole world over. In the years since the puzzles first reached monumental popularity, many puzzle makers have tried to experiment with and push the genre forward, crafting puzzles that are different and unique and that redefine what a sudoku puzzle can be. Among sudoku puzzle books, you will find plenty of variety, plenty of Sudoku X books for adults that you can turn to for a fresh experience. Sometimes, however, you just want the Sudoku X puzzle, something reminiscent of the sudoku puzzles you first did when you were falling in love with sudoku itself. What's wrong with the classics, right? If you are someone who has looked back fondly on the sudoku puzzles of years gone by, then Sudoku X Puzzles is the sudoku book for you. You can look back on all the wonderful hours you have spent playing the sudoku puzzles that you enjoy the most, the ones that are not quite simple but that are also never convoluted. The Sudoku X puzzles that you enjoy are the ones that don't feel the need to distract you with flair or fireworks. You want sudoku puzzles that are comfortable with their own straightforwardness! We are right there with you, right there filling in numbers, right there plotting out moves, and we want you to know that we have created this book because we share your passion for great Sudoku X puzzles. This is the Sudoku X puzzle book you have been searching for, a true-blue classic filled with new puzzles. Get solving! The handy size means you can carry your book wherever you roam. Puzzles are pre-checked to eliminate error potential. Other names that are searched for Sudoku: soduko, suduko.
Book Synopsis Christmas Sudoku Puzzle Book for Adults by : Cindy Latulippe Publish
Download or read book Christmas Sudoku Puzzle Book for Adults written by Cindy Latulippe Publish and published by . This book was released on 2020-11-03 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt: Enjoy hours of fun solving these easy to hard sudoku puzzles! 8.5 x 11 inches Soft glossy cover 60 Sudoku puzzles with solutions Perfect gift idea for birthdays, Christmas or other special occasions Great for adults, teens who love to solve puzzles!
Book Synopsis Sudoku X - 120 Easy To Master Puzzles 6x6 - 8 by : John Collins
Download or read book Sudoku X - 120 Easy To Master Puzzles 6x6 - 8 written by John Collins and published by . This book was released on 2020-01-10 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sudoku X also called Diagonal Sudoku.The puzzle is a 6x6 grid made up of 3x2 subgrids (called "regions").Some cells already contain numbers, known as "givens".The goal is to fill in the empty cells, one number in each, so that each column, row, region and diagonal contains the numbers 1 through 6 exactly once.Each number in the solution therefore occurs only once in each of three "directions", hence the "single numbers" implied by the puzzle's name.
