Jigsaw Sudoku Puzzle Books 250 Easy Puzzles Volume 2
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Jigsaw Sudoku Puzzle Books 250 Easy Puzzles Volume 2
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Author : Christian Demarco
language : en
Publisher:
Release Date : 2019-04-16
Jigsaw Sudoku Puzzle Books 250 Easy Puzzles Volume 2 written by Christian Demarco and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-04-16 with categories.
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.
Jigsaw Sudoku Puzzle Books 250 Easy Puzzles Volume 1
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Author : Christian Demarco
language : en
Publisher:
Release Date : 2019-04-16
Jigsaw Sudoku Puzzle Books 250 Easy Puzzles Volume 1 written by Christian Demarco and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-04-16 with categories.
Title: Jigsaw Sudoku Puzzle Books - 250 Easy Puzzles Volume 1Subtitle: Handy 6 x 9 inch Book Layout - Ideal for BeginnersWelcome 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.
200 Easy Jigsaw Sudoku With Solution Vol 2
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Author : Tewebook Sudoku Puzzle
language : en
Publisher:
Release Date : 2019-07-20
200 Easy Jigsaw Sudoku With Solution Vol 2 written by Tewebook Sudoku Puzzle and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-07-20 with categories.
Sudoku Puzzlebook 200 easy Sudoku Puzzle in compact format for on the go, on vacation, at the beach or just passing the time in rainy weather at home. At the end of the booklet there is to each puzzle the solution 200 puzzles Two puzzles per page At the end of the book solutions to all puzzles
Irregular Sudoku
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Author : P Proof
language : en
Publisher:
Release Date : 2020-11-18
Irregular Sudoku written by P Proof and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-11-18 with categories.
Looking For Easy Irregular Jigsaw Sudoku Puzzles? You Just Found 250 Of Them! Puzzles Are All Easy And Printed On A White Paper, Two Sudoku puzzles per page. You will find solutions at the back of the book. If you love Easy irregular Sudoku, You will enjoy solving these Puzzles! Check out our PuzzleProof author page for more Sudoku Puzzle books for various difficulty levels.
Jigsaw Sudoku Puzzle Books 250 Easy Puzzles Volume 5
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Author : Christian Demarco
language : en
Publisher:
Release Date : 2019-04-16
Jigsaw Sudoku Puzzle Books 250 Easy Puzzles Volume 5 written by Christian Demarco and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-04-16 with categories.
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.
Jigsaw Sudoku Puzzle Books 250 Easy Puzzles Volume 4
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Author : Christian Demarco
language : en
Publisher:
Release Date : 2019-04-16
Jigsaw Sudoku Puzzle Books 250 Easy Puzzles Volume 4 written by Christian Demarco and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-04-16 with categories.
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.
Jigsaw Sudoku Puzzle Books 250 Easy Puzzles Volume 3
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Author : Christian Demarco
language : en
Publisher:
Release Date : 2019-04-16
Jigsaw Sudoku Puzzle Books 250 Easy Puzzles Volume 3 written by Christian Demarco and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-04-16 with categories.
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.
Jigsaw Sudoku Puzzle Books 250 Medium Puzzles Volume 3
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Author : Christian Demarco
language : en
Publisher:
Release Date : 2019-04-19
Jigsaw Sudoku Puzzle Books 250 Medium Puzzles Volume 3 written by Christian Demarco and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-04-19 with categories.
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.
Jigsaw Sudoku Puzzle Books 250 Medium Puzzles Volume 1
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Author : Christian Demarco
language : en
Publisher:
Release Date : 2019-04-18
Jigsaw Sudoku Puzzle Books 250 Medium Puzzles Volume 1 written by Christian Demarco and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-04-18 with categories.
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.
Sudoku Puzzle Books 250 Hard Puzzles Volume 2
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Author : Christian Demarco
language : en
Publisher:
Release Date : 2019-04-04
Sudoku Puzzle Books 250 Hard Puzzles Volume 2 written by Christian Demarco and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-04-04 with categories.
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.