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Book Diagonal Jigsaw Sudoku

    Book Details:
  • Author : M. S. Moayeri
  • Publisher : Sterling Publishing Company
  • Release : 2008-06
  • ISBN : 1402750382
  • Pages : 148 pages

Download or read book Diagonal Jigsaw Sudoku written by M. S. Moayeri and published by Sterling Publishing Company. This book was released on 2008-06 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduces a fresh variant of sudoku that features irregular regions of nine neighboring cells; they're called jigsaw elements because they all fit together to create one 9X9 grid.

Book Jigsaw Sudoku Variants

    Book Details:
  • Author : Somatomint
  • Publisher :
  • Release : 2020-06-07
  • ISBN :
  • Pages : 112 pages

Download or read book Jigsaw Sudoku Variants written by Somatomint and published by . This book was released on 2020-06-07 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: Keep your mind young and your memory sharp with 450 Jigsaw Sudoku Variety Puzzles Book. Scientific research has shown that solving logic puzzles as Sudoku keeps your memory sharper and your mind younger. There are 5 different types of puzzles in this book, Diagonal Jigsaw Sudoku, Anti-diagonal Jigsaw Sudoku, Girandola jigsaw Sudoku, Jigsaw Windoku, Consecutive jigsaw Sudoku. The book has 90 puzzles for each type from easy to hard, a total of 450 puzzles with solutions. Jigsaw Sudoku is variation of classic sudoku where the 3x3 blocks are no longer square, instead it's irregular region of 9 cells, and all numbers from 1 to 9 must be fit inside with no repetition in any row or column or region. As twisted as it sounds, these puzzles are challenging and addictive. Diagonal jigsaw Sudoku or Jigsaw Sudoku X is like classic sudoku in the rules where no repetition of numbers in any column or row or block. The difference between classic Sudoku and Sudoku x or diagonal sudoku is the extra constrain or rule where the numbers 1 to 9 must fit in the diagonal lines and no repetition of any number in the diagonals marked by the gray big X lines. The Anti-diagonal variation is an added extra step to make solving the puzzles a little challenging. Where the diagonal lines should only have at most three different numbers. Repeated numbers are okay in the diagonal line, that is why it's called anti-diagonal. Other sudoku rules as no repetition in the blocks, rows and columns should be followed. Girandola Jigsaw Sudoku has the same rules as Jigsaw Sudoku plus an additional rule where the scatted shaded cells must contain the numbers 1 to 9 with no repetition in those shaded cells. Jigsaw Windoku has extra four (3x3) blocks (shaded) where the numbers 1 to 9 can fit in without repetition, so there are the 9 blocks and the extra four shaded blocks making in total 13 overlapping regions. Consecutive Sudoku is a variation of traditional sudoku with the same rules, i.e. numbers from 1 to 9 to be placed in every row, column, and block without repetition. However, consecutive Sudoku takes it little further by consecutive condition, where there are little rectangles or rods between cells that contain consecutive numbers. If there is nothing between the cells, then the numbers on those neighbor cells may have non-consecutive numbers. Features Size: 8 x 11.5 inch (large size) with softcover and paperback binding. Pages: 110 pages with full-page 450 different puzzles. (6 puzzles per page so it's compact for easy carrying and holding). Plus, the Answers of all the puzzles at the end. Stretch your brain with this unique selection of fun and challenging twisted Jigsaw Sudoku Variety. Scroll up and order your copy.

Book Sudoku X

    Book Details:
  • Author : Christopher Monckton
  • Publisher : Justin, Charles & Co.
  • Release : 2005-10-25
  • ISBN : 1932112456
  • Pages : 161 pages

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 Jigsaw Sudoku X Pocket Rocket  100 Easy Pocket Size Jigsaw Sudoku x Puzzles   Volume 5

Download or read book Jigsaw Sudoku X Pocket Rocket 100 Easy Pocket Size Jigsaw Sudoku x Puzzles Volume 5 written by Christian Demarco and published by . This book was released on 2019-01-23 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt: Get ready to Blast-off into the world of Pocket Size Jigsaw Sudoku-x Puzzles. With a book size of only 4 x 6 inches and 1 puzzle per page, the Jigsaw Sudoku-x Pocket Rocket Book can be taken with you wherever you go. The Jigsaw Sudoku-x Puzzles in the Easy series of books do not require any advanced solving techniques. The Pocket Rocket series is available in; Sudoku, Jigsaw Sudoku, Sudoku X and Jigsaw Sudoku-x. In my classic Jigsaw Sudoku-x 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 irregular shapes that all contain 9 cells. However, in Jigsaw Sudoku-X puzzles there is one other element that can be used to determine the correct numbers, and that is the two diagonal lines of shaded squares that run from corner to corner. The aim of the puzzle is to fill the blank cells with the correct numbers. Each row, column, irregular shape and both shaded diagonals must end up containing all of the numbers from 1 to 9. Each number can only appear once in any row, column, irregular shape and shaded diagonal. 100 Easy Jigsaw Sudoku-x Puzzles Handy & Portable 4 x 6 inch Book Layout Easy to read (1 Puzzle per Page) Advanced Solving Techniques Not Required Ideal For Beginners Solutions Included

Book Large Print   250 Jigsaw Sudoku   X Diagonal   Deluxe Puzzles

Download or read book Large Print 250 Jigsaw Sudoku X Diagonal Deluxe Puzzles written by Andrii Pitenko and published by Createspace Independent Publishing Platform. This book was released on 2018-07-12 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt: - 250 royal puzzles + surprise in 250 killer sudoku very hard (need to download and print)- Sudoku 9x9. The entire playing field consists of 81 cells. It is required to fill empty cells with numbers from 1 to 9. Numbers from 1 to 9 are not repeated in the columns and rows of the square 9 x 9. In this puzzle, the digits from 1 to 9 should not be repeated in the central diagonals. The puzzle contains areas in an arbitrary form. They can be called figurative or geometric, they also have names ("Jigsaw Sudoku," "Geometry Sudoku," "Irregular Sudoku," "Kikagaku Nanpure").- levels continue to please. 50 Easy + 50 Medium + 50 Hard + 100 Very hard- all riddles have only one verified solution- 2 puzzles on 1 page, very practical and convenient- a lot of free space for the progress of your thoughts- good mind support in the excellent form- large font- develops memory, logical thinking, helps to focus- creative possibilities are expandingIdeal gift for all fans of puzzles. An excellent book for free time and learning of the mind. I hope you enjoy the book. I would be very grateful if you write a review.Best regards, Andrii Pitenko

Book 400 Variety Sudoku

    Book Details:
  • Author : Inna Maliarenko
  • Publisher :
  • Release : 2019-06-13
  • ISBN : 9781791646561
  • Pages : 232 pages

Download or read book 400 Variety Sudoku written by Inna Maliarenko and published by . This book was released on 2019-06-13 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sudoku puzzle books Variety is one of the best books containing number games based on Sudoku, the popular brainteaser. The book is perfect for the development of logical and creative thinking. We have collected for you 400 of the most diverse varieties of brainteasers for beginners to experts. The book contains classic sudoku, jigsaw sudoku, diagonal sudoku, and argyle sudoku, allowing you to choose your favorite version of the game without having to buy several books. With the help of this book you will be able to test your intellectual abilities and reach a new level of mastery. Sometimes users call this game suduko variety, sumoku variants, samurai book puzzles, etc. Our team has carefully tested all games to ensure they are free of errors. The convenient format lets you comfortably solve each puzzle. Enjoy: )

Book Large Print   250 Jigsaw Sudoku   Anti Diagonal   Amusing Puzzles

Download or read book Large Print 250 Jigsaw Sudoku Anti Diagonal Amusing Puzzles written by Andrii Pitenko and published by Createspace Independent Publishing Platform. This book was released on 2018-07-12 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt: - 250 great puzzles + surprise in 250 killer sudoku very hard (need to download and print) - Sudoku 9x9. The entire playing field consists of 81 cells. It is required to fill empty cells with numbers from 1 to 9. Numbers from 1 to 9 are not repeated in the columns and rows of the square 9 x 9. In Sudoku Anti Diagonal each diagonal of the square contains no more than three different digits. The puzzle contains areas in an arbitrary form. They can be called figurative or geometric, they also have names ("Jigsaw Sudoku," "Geometry Sudoku," "Irregular Sudoku," "Kikagaku Nanpure"). - levels continue to please. 50 Easy + 50 Medium + 50 Hard + 100 Very hard - all riddles have only one verified solution - 2 puzzles on 1 page, very practical and convenient - a lot of free space for the progress of your thoughts - good mind support in excellent form - large font - develops memory, logical thinking, helps to focus - creative possibilities are expanding Ideal gift for all fans of puzzles. An excellent book for free time and learning of the mind. I hope you enjoy the book. I would be very grateful if you write a review. Best regards, Andrii Pitenko

Book Jigsaw Sudoku X Pocket Rocket  100 Medium Pocket Size Jigsaw Sudoku x Puzzles   Volume 3

Download or read book Jigsaw Sudoku X Pocket Rocket 100 Medium Pocket Size Jigsaw Sudoku x Puzzles Volume 3 written by Christian Demarco and published by . This book was released on 2019-01-28 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt: Get ready to Blast-off into the world of Pocket Size Jigsaw Sudoku-x Puzzles. With a book size of only 4 x 6 inches and 1 puzzle per page, the Jigsaw Sudoku-x Pocket Rocket Book can be taken with you wherever you go. The Jigsaw Sudoku-x Puzzles in the Medium series of books do not require any advanced solving techniques. The Pocket Rocket series is available in; Sudoku, Jigsaw Sudoku, Sudoku X and Jigsaw Sudoku-x. In my classic Jigsaw Sudoku-x 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 irregular shapes that all contain 9 cells. However, in Jigsaw Sudoku-X puzzles there is one other element that can be used to determine the correct numbers, and that is the two diagonal lines of shaded squares that run from corner to corner. The aim of the puzzle is to fill the blank cells with the correct numbers. Each row, column, irregular shape and both shaded diagonals must end up containing all of the numbers from 1 to 9. Each number can only appear once in any row, column, irregular shape and shaded diagonal. 100 Medium Jigsaw Sudoku-x Puzzles Handy & Portable 4 x 6 inch Book Layout Easy to read (1 Puzzle per Page) Advanced Solving Techniques Not Required Ideal For Intermediate Solvers Solutions Included

Book 200 Brickwalldoku   200 Jigsaw Killer X Diagonal Sudoku  Puzzles Easy Levels

Download or read book 200 Brickwalldoku 200 Jigsaw Killer X Diagonal Sudoku Puzzles Easy Levels written by Basford Holmes and published by Independently Published. This book was released on 2018-12-17 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: Amazing fitness and energy for the brain.BrickWallDoku. A brick wall is a logical puzzle. Fill the grid with numbers so that in each row and in each column they do not repeat. On each brick, one number is even, the other is odd.Killer jigsaw sudoku X Diagonal - This Sudoku leads step by step to the top of the skill. It is necessary to fill empty cells with numbers from 1 to 9, each of the digits should appear only once in each row and column of the 9x9 square. The puzzle contains areas in an arbitrary form. The sum of all the numbers in the cage must correspond to the number printed in the corner. They can be called figurative or geometric, they also have names (Killer Jigsaw Sudoku, Killer Geometry Sudoku, Killer Irregular Sudoku, Killer Kikagaku Nanpure). In this puzzle, the main diagonals of the square contain numbers from 1 to 9.200 BrickWallDoku sudoku puzzle easy levels.200 Jigsaw Killer "X" Diagonal sudoku puzzle easy levels.- unique puzzles+ 250 sudokus difficult level that can be downloaded and printed.+ 250 maze puzzles that can be downloaded and printed.- only 1 verified solution.- all answers are at the end of the book.- exclusive puzzles.- a link to the surprise is at the end of the book.An excellent book for free time and mind exploration.I hope you enjoy the book.Best regards, Basford Holmes

Book Luxe Sudoku   Jigsaw Killer Puzzles    x  Diagonal   250 Logical Rebus

Download or read book Luxe Sudoku Jigsaw Killer Puzzles x Diagonal 250 Logical Rebus written by Andrii Pitenko and published by Createspace Independent Publishing Platform. This book was released on 2018-07-17 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt: - 250 best puzzles + surprise in 250 Anti-Diagonal classic sudoku very hard (need to download and print)- Sudoku 9x9. The entire playing field consists of 81 cells. It is required to fill empty cells with numbers from 1 to 9. Numbers from 1 to 9 are not repeated in the columns and rows of the square 9 x 9. The sum of all the numbers in the cage must corre¬spond to the number printed in the corner. In this puzzle, the digits from 1 to 9 should not be repeated in the central diagonals. The puzzle contains areas in an arbitrary form. They can be called figurative or geometric, they also have names ("Jigsaw Sudoku," "Geometry Sudoku," "Irregular Sudoku," "Kikagaku Nanpure").- levels continue to please. 50 Easy + 50 Medium + 50 Hard + 100 Very hard- all riddles have only one verified solution- 2 puzzles on 1 page, very practical and convenient- a lot of free space for the progress of your thoughts- good mind support in the excellent form- large font- develops memory, logical thinking, helps to focus- creative possibilities are expandingIdeal gift for all fans of puzzles. An excellent book for free time and learning of the mind. I hope you enjoy the book. I would be very grateful if you write a review.Best regards, Andrii Pitenko

Book Jigsaw Sudoku Compendium

    Book Details:
  • Author : Djape
  • Publisher : Createspace Independent Publishing Platform
  • Release : 2016-11-12
  • ISBN : 9781540332608
  • Pages : 154 pages

Download or read book Jigsaw Sudoku Compendium written by Djape and published by Createspace Independent Publishing Platform. This book was released on 2016-11-12 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains 200 brand NEW, previously UNPUBLISHED Jigsaw Sudoku puzzles and variants thereof. All in all, you get: 20 puzzles 7x7 in size 10 puzzles 8x8 in size 50 classic Jigsaw Sudoku puzzles (9x9) 10 puzzles 10x10 in size 10 Odd-Even Sudoku Jigsaw 10 Diagonal Jigsaw Sudoku (no repeats on the diagonals) 10 Jigsaw Combo (both classic Sudoku and Jigsaw) 10 Jigsaw Windoku (4 additional square nonets) 10 Consecutive Sudoku Jigsaw 10 Non-Consecutive Jigsaw - two numbers that are touching may not be consecutive 10 Outside Jigsaw - the clues have been thrown outside the puzzle! 10 Frame Sudoku Jigsaw 10 Jigsaw TwoDoku - 2 slightly overlapping puzzles 10 Double Jigsaw Sudoku - 2 heavily overlapping puzzles 5 Triple Jigsaw Sudoku - 3 overlapping puzzles 5 LOCO Jigsaw Multi Sudoku! Jigsaw (or irregularly shaped) Sudoku puzzles share the same rules with classic Sudoku. The only difference is that the nine nonets are, well, irregularly shaped. This makes the puzzles slightly harder than the original Sudoku and surely more entertaining, because every puzzle has a unique nonet design and therefore, they can never become boring.

Book 200 Brickwalldoku   200 Jigsaw Killer X Diagonal Sudoku  Puzzles Very Hard Levels

Download or read book 200 Brickwalldoku 200 Jigsaw Killer X Diagonal Sudoku Puzzles Very Hard Levels written by Basford Holmes and published by Independently Published. This book was released on 2018-12-24 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: Good fitness and energy for the brain.BrickWallDoku. A brick wall is a logical puzzle. Fill the grid with numbers so that in each row and in each column they do not repeat. On each brick, one number is even, the other is odd.Killer jigsaw sudoku X Diagonal - This Sudoku leads step by step to the top of the skill. It is necessary to fill empty cells with numbers from 1 to 9, each of the digits should appear only once in each row and column of the 9x9 square. The puzzle contains areas in an arbitrary form. The sum of all the numbers in the cage must correspond to the number printed in the corner. They can be called figurative or geometric, they also have names (Killer Jigsaw Sudoku, Killer Geometry Sudoku, Killer Irregular Sudoku, Killer Kikagaku Nanpure). In this puzzle, the main diagonals of the square contain numbers from 1 to 9.200 BrickWallDoku sudoku puzzle very hard levels.200 Jigsaw Killer "X" Diagonal sudoku puzzle very hard levels.- unique puzzles+ 250 sudokus difficult level that can be downloaded and printed.+ 250 maze puzzles that can be downloaded and printed.- only 1 verified solution.- all answers are at the end of the book.- exclusive puzzles.- a link to the surprise is at the end of the book.An excellent book for free time and mind exploration.I hope you enjoy the book.Best regards, Basford Holmes

Book 200 Brickwalldoku   200 Jigsaw Killer X Diagonal Sudoku  Puzzles Easy   Medium   Hard   Very Hard Levels

Download or read book 200 Brickwalldoku 200 Jigsaw Killer X Diagonal Sudoku Puzzles Easy Medium Hard Very Hard Levels written by Basford Holmes and published by Independently Published. This book was released on 2018-12-15 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: Good fitness and energy for the brain.BrickWallDoku. A brick wall is a logical puzzle. Fill the grid with numbers so that in each row and in each column they do not repeat. On each brick, one number is even, the other is odd.Killer jigsaw sudoku X Diagonal - This Sudoku leads step by step to the top of the skill. It is necessary to fill empty cells with numbers from 1 to 9, each of the digits should appear only once in each row and column of the 9x9 square. The puzzle contains areas in an arbitrary form. The sum of all the numbers in the cage must correspond to the number printed in the corner. They can be called figurative or geometric, they also have names (Killer Jigsaw Sudoku, Killer Geometry Sudoku, Killer Irregular Sudoku, Killer Kikagaku Nanpure). In this puzzle, the main diagonals of the square contain numbers from 1 to 9.50 BrickWallDoku sudoku puzzles easy levels.50 BrickWallDoku sudoku puzzle medium levels.50 BrickWallDoku sudoku puzzle hard levels.50 BrickWallDoku sudoku puzzle very hard levels.50 Jigsaw Killer "X" Diagonal sudoku puzzle easy levels.50 Jigsaw Killer "X" Diagonal sudoku puzzle medium levels.50 Jigsaw Killer "X" Diagonal sudoku puzzle hard levels.50 Jigsaw Killer "X" Diagonal sudoku puzzle very hard levels.- unique puzzles+ 250 sudokus difficult level that can be downloaded and printed.+ 250 maze puzzles that can be downloaded and printed.- only 1 verified solution.- all answers are at the end of the book.- exclusive puzzles.- a link to the surprise is at the end of the book.An excellent book for free time and mind exploration.I hope you enjoy the book.Best regards, Basford Holmes

Book 200 Brickwalldoku   200 Jigsaw Killer X Diagonal Sudoku  Puzzles Hard Levels

Download or read book 200 Brickwalldoku 200 Jigsaw Killer X Diagonal Sudoku Puzzles Hard Levels written by Basford Holmes and published by Independently Published. This book was released on 2018-12-21 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: Premium fitness and energy for the brain.BrickWallDoku. A brick wall is a logical puzzle. Fill the grid with numbers so that in each row and in each column they do not repeat. On each brick, one number is even, the other is odd.Killer jigsaw sudoku X Diagonal - This Sudoku leads step by step to the top of the skill. It is necessary to fill empty cells with numbers from 1 to 9, each of the digits should appear only once in each row and column of the 9x9 square. The puzzle contains areas in an arbitrary form. The sum of all the numbers in the cage must correspond to the number printed in the corner. They can be called figurative or geometric, they also have names (Killer Jigsaw Sudoku, Killer Geometry Sudoku, Killer Irregular Sudoku, Killer Kikagaku Nanpure). In this puzzle, the main diagonals of the square contain numbers from 1 to 9.200 BrickWallDoku sudoku puzzle hard levels.200 Jigsaw Killer "X" Diagonal sudoku puzzle hard levels.- unique puzzles+ 250 sudokus difficult level that can be downloaded and printed.+ 250 maze puzzles that can be downloaded and printed.- only 1 verified solution.- all answers are at the end of the book.- exclusive puzzles.- a link to the surprise is at the end of the book.An excellent book for free time and mind exploration.I hope you enjoy the book.Best regards, Basford Holmes

Book 200 Brickwalldoku   200 Jigsaw Killer X Diagonal Sudoku  Puzzles Hard and Very Hard Levels

Download or read book 200 Brickwalldoku 200 Jigsaw Killer X Diagonal Sudoku Puzzles Hard and Very Hard Levels written by Basford Holmes and published by Independently Published. This book was released on 2018-12-28 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cool fitness and energy for the brain.BrickWallDoku. A brick wall is a logical puzzle. Fill the grid with numbers so that in each row and in each column they do not repeat. On each brick, one number is even, the other is odd.Killer jigsaw sudoku X Diagonal - This Sudoku leads step by step to the top of the skill. It is necessary to fill empty cells with numbers from 1 to 9, each of the digits should appear only once in each row and column of the 9x9 square. The puzzle contains areas in an arbitrary form. The sum of all the numbers in the cage must correspond to the number printed in the corner. They can be called figurative or geometric, they also have names (Killer Jigsaw Sudoku, Killer Geometry Sudoku, Killer Irregular Sudoku, Killer Kikagaku Nanpure). In this puzzle, the main diagonals of the square contain numbers from 1 to 9.100 BrickWallDoku sudoku puzzle hard levels.100 BrickWallDoku sudoku puzzle very hard levels.100 Jigsaw Killer "X" Diagonal sudoku puzzle hard levels.100 Jigsaw Killer "X" Diagonal sudoku puzzle very hard levels.- unique puzzles+ 250 sudokus difficult level that can be downloaded and printed.+ 250 maze puzzles that can be downloaded and printed.- only 1 verified solution.- all answers are at the end of the book.- exclusive puzzles.- a link to the surprise is at the end of the book.An excellent book for free time and mind exploration.I hope you enjoy the book.Best regards, Basford Holmes

Book Krazydad Two Not Touch Volume 1  360 Star Battle Puzzles to Preserve Your Sanity in These Trying Times

Download or read book Krazydad Two Not Touch Volume 1 360 Star Battle Puzzles to Preserve Your Sanity in These Trying Times written by Jim Bumgardner and published by Krazydad Two Not Touch. This book was released on 2020-07-27 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Book Sudoku Variants

    Book Details:
  • Author : Conceptis Puzzles
  • Publisher : Sterling Publishing Company, Inc.
  • Release : 2006-08
  • ISBN : 9781402741111
  • Pages : 154 pages

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.