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Book Sudoku Puzzle Book with Solutions   250  Medium Difficulty   Volume 3

Download or read book Sudoku Puzzle Book with Solutions 250 Medium Difficulty Volume 3 written by Activity Makers and published by . This book was released on 2019-08-15 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt: Level up your Brain with our Sudoku Puzzle Book which comes with 250+ Sudoku puzzles with solutions. Sudoku is one of the most popular numbers puzzle game. If you are new this book is ideal as it doesn't take much effort to solve them. Answers also are provided in case if you get stuck. As you solve the problems progressively move to harder puzzles available with us. Click on the Author name link under the title to check more Sudoku and other puzzle books. Playing Sudoku or other similar puzzle games has huge benefits like: It improves your memory Stress Relief Improves concentration Reduces the chances of developing Alzheimers Builds self confidence Features & Product Description 250+ Puzzles. Stuck ? No problem find solutions at the end. 4 Puzzles Per Page. Thick border lines for 3x3 Sub Grids to easily focus on on compartment at a time. Professionally designed cover with Matte finish. Ideal gift for Sudoku lovers, teachers, students & anyone who love to solve Math challenges. What are you waiting for? Grab the book and level up your brain by solving challenges. Don't forget to check other volumes & puzzle books on your Author page.

Book Sudoku Puzzle Books   250 Medium Puzzles Volume 3

Download or read book Sudoku Puzzle Books 250 Medium Puzzles Volume 3 written by Christian Demarco and published by . This book was released on 2019-04-03 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: Welcome to the Sudoku Puzzle Books Series. The puzzles in the "Medium" version are ideal for those wanting to move on from the "Easy" difficulty level and try a slightly more challenging puzzle. As with the "Easy" puzzles there are no advanced solving methods required. Each puzzle has a unique solution which can be completed by scanning rows, columns and 3 x 3 boxes to determine the correct numbers. Please read the full description to determine if this difficulty level is the right one for you. There is nothing more frustrating than purchasing a puzzle book only to find that it is either not challenging enough or too difficult to complete. The Sudoku Puzzle Book series is available in the following difficulty levels: Easy, Medium, Hard, Very Hard and Extreme. All difficulty levels are available in the following formats: Sudoku, Jigsaw Sudoku, Sudoku-X and Jigsaw Sudoku-X In my 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 3 X 3 box must end up containing all of the numbers from 1 to 9. Each number can only appear once in any row, column and 3 X 3 box. 250 Medium Sudoku Puzzles Handy 6 x 9 inch Book Layout Easy to read (2 Puzzles per Page) Advanced Solving Techniques Not Required Solutions Included How the Difficulty Levels of the Puzzles are Determined: Difficulty levels are determined by the complexity of the methods used to deduce the correct solution: Each level (Hard, Very Hard & Extreme) necessitates a mode of deduction which was not required in the previous level. The "Easy" and "Medium" Difficulty levels require no advance solving techniques, however, in the "Easy" level, there will always be one or more cells that can be filled-in by scanning rows columns and 3 X 3 boxes, whereas, in the "Medium" level there is usually only one cell that can be filled-in at any one time. Easy: Ideal for beginners or those that simply want a very easy to solve Sudoku puzzle. No Advanced solving techniques required. Medium: A little more challenging than the "Easy" difficulty level. You may have to check a lot of rows, columns and 3 X 3 boxes before finding a cell that can be filled in. As with the "Easy" difficulty puzzles, advanced solving techniques are not required. Hard: The "Hard" difficulty level puzzles do require some advanced solving methods to be employed. These puzzles are more suited to those learning to use more complex deduction processes and moderately experienced Sudoku puzzle solvers. Very Hard:The "Very Hard" series is one step up from the "Hard" level, forcing the solver to use more complex deduction methods. This level is definitely one for the more experienced solvers and Sudoku fanatics. Extreme: As the difficulty level suggests, these puzzles are extremely difficult to complete. Unless you are an expert Sudoku solver, these puzzles may be too hard for you.

Book SUDOKU Puzzle Book 3

    Book Details:
  • Author : Doubati PUBLISHING
  • Publisher :
  • Release : 2020-02-06
  • ISBN :
  • Pages : 90 pages

Download or read book SUDOKU Puzzle Book 3 written by Doubati PUBLISHING and published by . This book was released on 2020-02-06 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt: Relieve stress by playing Sudoku. There are 4 puzzles per page and solutions are at the end of every 50 SUDOKU in the book. 250 SUDOKU Puzzles.best mind games to offer as a gift or the offer to your self.

Book Jigsaw Sudoku Puzzle Books   250 Medium Puzzles Volume 3

Download or read book Jigsaw Sudoku Puzzle Books 250 Medium Puzzles Volume 3 written by Christian Demarco and published by . This book was released on 2019-04-19 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: Welcome to the Jigsaw Sudoku Puzzle Books Series. The puzzles in the "Medium" version are ideal for Jigsaw Sudoku beginners and those that just want a moderately easy Jigsaw Sudoku puzzle to solve. There are no advanced solving methods required. Each puzzle has a unique solution which can be completed using simple logic. Please read the full description to determine if this difficulty level is the right one for you. There is nothing more frustrating than purchasing a puzzle book only to find that it is either not challenging enough or too difficult to complete. The Jigsaw Sudoku Puzzle Book series is available in the following difficulty levels: Easy, Medium, Hard, Very Hard and Extreme. All difficulty levels are available in the following formats: Sudoku, Jigsaw Sudoku, Sudoku-X and Jigsaw Sudoku-X In my classic Jigsaw 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 irregular shaped boxes that all contain 9 cells. The aim of the puzzle is to fill the blank cells with the correct numbers. Each row, column and irregular shaped box must end up containing all of the numbers from 1 to 9. Each number can only appear once in any row, column and irregular shaped box. 250 Medium Jigsaw Sudoku Puzzles Handy 6 x 9 inch Book Layout Easy to read (2 Puzzles per Page) Advanced Solving Techniques Not Required Ideal For Beginners Solutions Included How the Puzzles are graded: Difficulty levels are determined by the complexity of the methods used to deduce the correct solution: Each level (Hard, Very Hard & Extreme) necessitates a mode of deduction which was not required in the previous level. The "Easy" and "Medium" Difficulty levels require no advance solving techniques, however, in the "Easy" level, there will always be one or more cells that can be filled-in by scanning rows columns and irregular shapes, whereas, in the "Medium" level there is usually only one cell that can be filled-in at any one time. Easy: Ideal for beginners or those that simply want a very easy to solve Jigsaw Sudoku puzzle. No Advanced solving techniques required. Medium: A little more challenging than the "Easy" difficulty level. You may have to check a lot of rows, columns and irregular shapes before finding a cell that can be filled in. As with the "Easy" difficulty puzzles, advanced solving techniques are not required. Hard: The "Hard" difficulty level puzzles do require some advanced solving methods to be employed. These puzzles are more suited to those learning to use more complex deduction processes and moderately experienced Jigsaw Sudoku puzzle solvers. Very Hard:The "Very Hard" series is one step up from the "Hard" level, forcing the solver to use more complex deduction methods. This level is definitely one for the more experienced solvers and the Jigsaw Sudoku fanatic. Extreme: As the difficulty level suggests, these puzzles are extremely difficult to complete. Unless you are an expert Jigsaw Sudoku solver, these puzzles may be too hard for you.

Book Sudoku Puzzle Book  Medium

    Book Details:
  • Author : C. R. Gilbert
  • Publisher :
  • Release : 2017-08-19
  • ISBN : 9781974677573
  • Pages : 142 pages

Download or read book Sudoku Puzzle Book Medium written by C. R. Gilbert and published by . This book was released on 2017-08-19 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt: 200 Medium Sudoku Puzzles with LARGE Type

Book Sudoku Puzzle Book Medium

Download or read book Sudoku Puzzle Book Medium written by James Watts and published by . This book was released on 2020-08-05 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Must Have Sudoku Puzzle book is a fresh new collection of 300+ Sudoku puzzles for the leap year. This Book Contains 300+ Medium Sudoku Puzzles for beginners and experienced Sudoku Puzzlers. Improves your memory. Memory and logic work side-by-side when you are playing Sudoku Stimulates your mind keeping your brain active Learns to do things quickly Increases your concentration power. Feel Happy.

Book Sudoku Puzzle Book Volume 3

    Book Details:
  • Author : Ronald S. Kogut
  • Publisher : Createspace Independent Publishing Platform
  • Release : 2016-12-22
  • ISBN : 9781541272606
  • Pages : 74 pages

Download or read book Sudoku Puzzle Book Volume 3 written by Ronald S. Kogut and published by Createspace Independent Publishing Platform. This book was released on 2016-12-22 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt: Are you ready for Sudoku Puzzles-Volume 2 is for you! In this book, Easy, Medium, Hard, Very Hard difficulty and this book is very suitable for a gift. You can even buy several copies and compete with your friends to see who can solve more puzzles.

Book Color Sudoku

    Book Details:
  • Author : Philip Riley
  • Publisher : Sterling Publishing Company
  • Release : 2007-06
  • ISBN : 9781402747144
  • Pages : 244 pages

Download or read book Color Sudoku written by Philip Riley and published by Sterling Publishing Company. This book was released on 2007-06 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sudoku fans will welcome this bright new twist to the popular puzzles! Every one of these ingenious creations--from "Bold X" to "Rainbow Up"--makes colors and patterns part of the solving fun. And although each puzzle maintains the normal 9x9 grid and follows the basic rules of the game, every style adds an additional restriction to intensify the challenge. In "Worms," for example, swirly, squirmy shapes fill the grids; the numbers increase as you work your way from head to tail. "Even/Odd" features squares in two colors, depending on whether the number to fill it is even or odd. And in "Positional Board," no two of the red squares can be the same number. They're all lots of fun!

Book Sudoku Puzzle Book for Adults

    Book Details:
  • Author : Agenda Book Edition
  • Publisher : Independently Published
  • Release : 2020-11-13
  • ISBN :
  • Pages : 102 pages

Download or read book Sudoku Puzzle Book for Adults written by Agenda Book Edition and published by Independently Published. This book was released on 2020-11-13 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt: ★ Sudoku puzzle book for adults 200 Sudoku puzzles 3 levels of difficulty (easy, medium, hard) for beginners, advanced and experts The Sudoku puzzle book is the perfect gift for adults who love brain jogging and mental excercises.

Book Sudoku Puzzle Book for Adults

Download or read book Sudoku Puzzle Book for Adults written by Agenda Book Edition and published by . This book was released on 2020-10-23 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: ★ Sudoku Puzzle Book for Adults 320 Medium Sudoku Puzzles - Vol. 3 ✓ Solving Sudoku is a lot of fun and very easy to learn. Have fun with this Sudoku book! You will find 320 Puzzles to solve. Book features: 320 Sudoku Hard level Many hours of fun! Great gift for all new and "old" Sudoku fans!

Book Sudoku Puzzle Book Volume 3

    Book Details:
  • Author : Colormazen
  • Publisher : Createspace Independent Publishing Platform
  • Release : 2018-03-26
  • ISBN : 9781986841276
  • Pages : 82 pages

Download or read book Sudoku Puzzle Book Volume 3 written by Colormazen and published by Createspace Independent Publishing Platform. This book was released on 2018-03-26 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt: Do you like to use your spare moments indulging in Sudoku? If so, Colormazen Sudoku Puzzle Book will be your perfect take-anywhere companion. With 200 puzzles guaranteed to sharpen your mind and keep you thoroughly entertained, this collection is a real treat for anyone who loves Sudoku. Are you ready to rise to the ultimate brain-training challenge? Working the puzzles in this book can provide a vigorous mental workout for virtually everyone from teenagers to senior citizens, all while fitting within the theme of Sudoku. Included in Colormazen Sudoku Puzzle Book Volume 3: - --50 Easy Sudoku Puzzles --50 Medium Sudoku Puzzles --50 Hard Sudoku Puzzles --50 Very Hard Puzzles -- And so much more! Activate your brain cells and grab a pencil - Colormazen Sudoku Puzzle Book Volume 3 is here to provide you hours of challenging entertainment, one page at a time!

Book Sudoku Puzzle Books   250 Very Hard Puzzles Volume 3

Download or read book Sudoku Puzzle Books 250 Very Hard Puzzles Volume 3 written by Christian Demarco and published by . This book was released on 2019-04-08 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: Welcome to the Sudoku Puzzle Books Series. The puzzles in the "Very Hard" version are ideal for those wanting to move on from the "Hard" difficulty level and try a more challenging set of puzzles that require an additional set of advanced solving techniques. Please read the full description to determine if this difficulty level is the right one for you. There is nothing more frustrating than purchasing a puzzle book only to find that it is either not challenging enough or too difficult to complete. The Sudoku Puzzle Book series is available in the following difficulty levels: Easy, Medium, Hard, Very Hard and Extreme. All difficulty levels are available in the following formats: Sudoku, Jigsaw Sudoku, Sudoku-X and Jigsaw Sudoku-X In my 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 3 X 3 box must end up containing all of the numbers from 1 to 9. Each number can only appear once in any row, column and 3 X 3 box. 250 Very Hard Sudoku Puzzles Handy 6 x 9 inch Book Layout Easy to read (2 Puzzles per Page) Advanced Solving Techniques Required Solutions Included How the Difficulty Levels of the Puzzles are Determined: Difficulty levels are determined by the complexity of the methods used to deduce the correct solution: Each level (Hard, Very Hard & Extreme) necessitates a mode of deduction which was not required in the previous level. The "Easy" and "Medium" Difficulty levels require no advance solving techniques, however, in the "Easy" level, there will always be one or more cells that can be filled-in by scanning rows columns and 3 X 3 boxes, whereas, in the "Medium" level there is usually only one cell that can be filled-in at any one time. Easy: Ideal for beginners or those that simply want a very easy to solve Sudoku puzzle. No Advanced solving techniques required. These Sudoku puzzles can be solved by scanning rows, columns and 3 x 3 boxes to determine the correct numbers. Medium: A little more challenging than the "Easy" difficulty level. You may have to check a lot of rows, columns and 3 X 3 boxes before finding a cell that can be filled in. As with the "Easy" difficulty puzzles, advanced solving techniques are not required, and all puzzles can be solved by scanning rows, columns and 3 x 3 boxes to determine the correct numbers. Hard: The "Hard" difficulty level puzzles do require some advanced solving methods to be employed. These puzzles are more suited to those learning to use more complex deduction processes and moderately experienced Sudoku puzzle solvers. Very Hard:The "Very Hard" series is one step up from the "Hard" level, forcing the solver to use more complex deduction methods. This level is definitely one for the more experienced solvers and Sudoku fanatics. Extreme: As the difficulty level suggests, these puzzles are extremely difficult to complete. Unless you are an expert Sudoku solver, these puzzles may be too hard for you.

Book Sudoku Puzzle Books   250 Hard Puzzles Volume 3

Download or read book Sudoku Puzzle Books 250 Hard Puzzles Volume 3 written by Christian Demarco and published by . This book was released on 2019-04-04 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: Welcome to the Sudoku Puzzle Books Series. The puzzles in the "Hard" version are ideal for those wanting to move on from the "Medium" difficulty level and try a more challenging set of puzzles that require some advanced solving techniques. Please read the full description to determine if this difficulty level is the right one for you. There is nothing more frustrating than purchasing a puzzle book only to find that it is either not challenging enough or too difficult to complete. The Sudoku Puzzle Book series is available in the following difficulty levels: Easy, Medium, Hard, Very Hard and Extreme. All difficulty levels are available in the following formats: Sudoku, Jigsaw Sudoku, Sudoku-X and Jigsaw Sudoku-X In my 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 3 X 3 box must end up containing all of the numbers from 1 to 9. Each number can only appear once in any row, column and 3 X 3 box. 250 Hard Sudoku Puzzles Handy 6 x 9 inch Book Layout Easy to read (2 Puzzles per Page) Advanced Solving Techniques Required Solutions Included How the Difficulty Levels of the Puzzles are Determined: Difficulty levels are determined by the complexity of the methods used to deduce the correct solution: Each level (Hard, Very Hard & Extreme) necessitates a mode of deduction which was not required in the previous level. The "Easy" and "Medium" Difficulty levels require no advance solving techniques, however, in the "Easy" level, there will always be one or more cells that can be filled-in by scanning rows columns and 3 X 3 boxes, whereas, in the "Medium" level there is usually only one cell that can be filled-in at any one time. Easy: Ideal for beginners or those that simply want a very easy to solve Sudoku puzzle. No Advanced solving techniques required. Medium: A little more challenging than the "Easy" difficulty level. You may have to check a lot of rows, columns and 3 X 3 boxes before finding a cell that can be filled in. As with the "Easy" difficulty puzzles, advanced solving techniques are not required. Hard: The "Hard" difficulty level puzzles do require some advanced solving methods to be employed. These puzzles are more suited to those learning to use more complex deduction processes and moderately experienced Sudoku puzzle solvers. Very Hard:The "Very Hard" series is one step up from the "Hard" level, forcing the solver to use more complex deduction methods. This level is definitely one for the more experienced solvers and Sudoku fanatics. Extreme: As the difficulty level suggests, these puzzles are extremely difficult to complete. Unless you are an expert Sudoku solver, these puzzles may be too hard for you.

Book Medium Sudoku Puzzle Book Volume 3

    Book Details:
  • Author : Lucas Game
  • Publisher : Createspace Independent Publishing Platform
  • Release : 2016-11-11
  • ISBN : 9781540348142
  • Pages : 90 pages

Download or read book Medium Sudoku Puzzle Book Volume 3 written by Lucas Game and published by Createspace Independent Publishing Platform. This book was released on 2016-11-11 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Medium Sudoku Puzzle Book Volume 3 has been designed for fun for all ages and can be played by children, adults and senior citizens alike - suitable for all intermediate sudoku puzzle lovers!. Perfect for stimulating the mind and improving reasoning skills, this book contains 200 medium difficulty level sudoku puzzles with solutions for each of the puzzles. A 'Beginners Guide' is included providing valuable tips for solving the puzzles. Whatever your age, you'll love this Medium Sudoku Puzzle Book! The Medium Sudoku Puzzle Book Volume 3 makes an excellent gift and is ideal for the intermediate Sudoku player.

Book Sudoku

    Book Details:
  • Author : Alvin C. Jones
  • Publisher : Createspace Independent Publishing Platform
  • Release : 2016-12-24
  • ISBN : 9781541294868
  • Pages : 76 pages

Download or read book Sudoku written by Alvin C. Jones and published by Createspace Independent Publishing Platform. This book was released on 2016-12-24 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: 200+ Sudoku Puzzles makes an excellent gift and is perfect for Sudoku players of all levels. You can even buy several copies and compete with your friends to see who can solve more puzzles. 200 unique sudoku puzzles 4 difficulty Levels - easy, medium, hard, very hard Includes answers for every puzzle (but no cheating!) Hours of entertainment Perfect gift for that special someone

Book Sudoku Medium Puzzles Volume 3

    Book Details:
  • Author : A. D. Ardson
  • Publisher : Createspace Independent Publishing Platform
  • Release : 2016-07-02
  • ISBN : 9781535065979
  • Pages : 150 pages

Download or read book Sudoku Medium Puzzles Volume 3 written by A. D. Ardson and published by Createspace Independent Publishing Platform. This book was released on 2016-07-02 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt: SUDOKU MEDIUM PUZZLES Volume 3: 400 Sudoku Puzzles - Medium Level Sudoku, Sudoku puzzles, Sudoku puzzle books, Sudoku medium, Sudoku easy, Sudoku for kids, Sudoku hard Do you like solving Sudoku Puzzles? This book is for you! SUDOKU MEDIUM PUZZLES Volume 3 - 400 Sudoku Puzzles Medium Level is the third book in Sudoku Medium Puzzles Book Series by A. D. Ardson. This book contains 400 brand new, challenging Sudoku puzzles for beginners and experienced Sudoku solvers alike. Features: - 400 new Sudoku puzzles, difficulty level medium - Full solution to each puzzle at the end of the book Whether you are a novice or a skilled puzzler, these Sudoku puzzles will enhance your concentration and it will generate a lot of fun!

Book Jigsaw Sudoku Puzzle Books   250 Easy Puzzles Volume 3

Download or read book Jigsaw Sudoku Puzzle Books 250 Easy Puzzles Volume 3 written by Christian Demarco and published by . This book was released on 2019-04-16 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: Welcome to the Jigsaw Sudoku Puzzle Books Series. The puzzles in the "Easy" version are ideal for Jigsaw Sudoku beginners, children and those that just want a very easy Jigsaw Sudoku puzzle to solve. There are no advanced solving methods required. Each puzzle has a unique solution which can be completed using simple logic. Please read the full description to determine if this difficulty level is the right one for you. There is nothing more frustrating than purchasing a puzzle book only to find that it is either not challenging enough or too difficult to complete. The Jigsaw Sudoku Puzzle Book series is available in the following difficulty levels: Easy, Medium, Hard, Very Hard and Extreme. All difficulty levels are available in the following formats: Sudoku, Jigsaw Sudoku, Sudoku-X and Jigsaw Sudoku-X In my classic Jigsaw 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 irregular shaped boxes that all contain 9 cells. The aim of the puzzle is to fill the blank cells with the correct numbers. Each row, column and irregular shaped box must end up containing all of the numbers from 1 to 9. Each number can only appear once in any row, column and irregular shaped box. 250 Easy Jigsaw Sudoku Puzzles Handy 6 x 9 inch Book Layout Easy to read (2 Puzzles per Page) Advanced Solving Techniques Not Required Ideal For Beginners and Children Solutions Included How the Puzzles are graded: Difficulty levels are determined by the complexity of the methods used to deduce the correct solution: Each level (Hard, Very Hard & Extreme) necessitates a mode of deduction which was not required in the previous level. The "Easy" and "Medium" Difficulty levels require no advance solving techniques, however, in the "Easy" level, there will always be one or more cells that can be filled-in by scanning rows columns and irregular shapes, whereas, in the "Medium" level there is usually only one cell that can be filled-in at any one time. Easy: Ideal for beginners or those that simply want a very easy to solve Jigsaw Sudoku puzzle. No Advanced solving techniques required. Medium: A little more challenging than the "Easy" difficulty level. You may have to check a lot of rows, columns and irregular shapes before finding a cell that can be filled in. As with the "Easy" difficulty puzzles, advanced solving techniques are not required. Hard: The "Hard" difficulty level puzzles do require some advanced solving methods to be employed. These puzzles are more suited to those learning to use more complex deduction processes and moderately experienced Jigsaw Sudoku puzzle solvers. Very Hard:The "Very Hard" series is one step up from the "Hard" level, forcing the solver to use more complex deduction methods. This level is definitely one for the more experienced solvers and the Jigsaw Sudoku fanatic. Extreme: As the difficulty level suggests, these puzzles are extremely difficult to complete. Unless you are an expert Jigsaw Sudoku solver, these puzzles may be too hard for you.