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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 Large Print Jigsaw Sudoku X Puzzle Book for Adults   200 Easy Puzzles   Volume 10

Download or read book Large Print Jigsaw Sudoku X Puzzle Book for Adults 200 Easy Puzzles Volume 10 written by Christian Demarco and published by . This book was released on 2021-01-09 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: Welcome to the "Large Print Jigsaw Sudoku-x Puzzle Book for Adults". Jigsaw Sudoku, also known as Geometric Sudoku, Nonomino or Irregular Sudoku shares the same rules as a regular Sudoku puzzle, with the only difference being the fact that Jigsaw Sudoku has irregular shaped blocks as opposed to the 3 x 3 square blocks in a regular Sudoku puzzle. However, in Jigsaw Sudoku X puzzles there is also one more difference that will actually make the puzzle easier to solve, and that is the cross of shaded squares that run from corner to corner. Each shaded diagonal must also contain the numbers 1 to 9, with only one instance of each number allowed. Your task is to fill each row, column, irregular shape and both shaded diagonals with the numbers 1 to 9, with only one instance of each number allowed in any row, column, irregular shape and shaded diagonal. The Easy version does not require any advanced solving techniques, making it perfect for beginners and those that just want a book of easy puzzles in large print format. Please read the full description to determine if this difficulty level is the right one for you. The book size of 8.5 x 11 inches and only 2 puzzles per page provides a large, clear work area that is ideal for people with vision impairments, hand-eye co-ordination difficulties or for those that simply want an easy to view puzzle book. Please note: This is a large book and won't fit into a pocket or small bag, however, with the wide inner margins, puzzles are easy to tear out and take with you. 200 Easy Jigsaw Sudoku-x Puzzles in Large Print Format Every Puzzle Has a Unique Solution Advanced Solving is Not Required Large 8.5 x 11 Inch Book Size Only 2 Puzzles per Page Large, Clear Work Area on Quality White Paper Wide Inner Margins Make it Easy to Fold the Book Open and Tear-out Pages Solutions Included at the Back of Book 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, irregular shapes and shaded diagonals, whereas, in the "Medium" level there is sometimes 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-x 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, irregular shapes and both shaded diagonals 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 moderate 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-x 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 solver. Extreme: As the difficulty level suggests, these puzzles are extremely difficult to complete. Unless you are an expert Jigsaw Sudoku-x solver, these puzzles may be too hard for you.

Book Sudoku X

    Book Details:
  • Author : Mindful Puzzle Books
  • Publisher :
  • Release : 2019-08-07
  • ISBN : 9781088899878
  • Pages : 146 pages

Download or read book Sudoku X written by Mindful Puzzle Books and published by . This book was released on 2019-08-07 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt: In some sudokus main diagonals also contain the digits 1 through 9. This variant is called Sudoku X ("Diagonal Sudoku"). Use the check box Diagonals for such sudokus.

Book Large Print Jigsaw Sudoku

    Book Details:
  • Author : Clarity Media
  • Publisher : Createspace Independent Publishing Platform
  • Release : 2016-08-30
  • ISBN : 9781537388502
  • Pages : 120 pages

Download or read book Large Print Jigsaw Sudoku written by Clarity Media and published by Createspace Independent Publishing Platform. This book was released on 2016-08-30 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt: Welcome to our large print book of Jigsaw Sudoku! This book features our best collection of jigsaw sudoku puzzles in large print font size. If you enjoy classic sudoku or other variants, but struggle to clearly see the numbers in the grid then this is the book for you! We have created the grids with a huge font size of 40pt! This is generally 4 times the sizes of a standard puzzle. Jigsaw regions are also coloured in different shades of grey to help the eye see the shape. If you are new to this puzzle type, How To Solve instructions are featured inside. We have also included solutions towards the back so if you need a helping hand along the way, take a peek there!Good luck and happy solving

Book Jigsaw Sudoku X

    Book Details:
  • Author : Christian Demarco
  • Publisher :
  • Release : 2018-10-16
  • ISBN : 9781728873282
  • Pages : 130 pages

Download or read book Jigsaw Sudoku X written by Christian Demarco and published by . This book was released on 2018-10-16 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt: Jigsaw Sudoku, also known as Geometric Sudoku, Nonomino or Irregular Sudoku shares the same rules as a regular Sudoku puzzle, with the only difference being the fact that Jigsaw Sudoku has irregular shaped blocks as opposed to the 3x3 square blocks in a regular Sudoku puzzle. However, in Jigsaw Sudoku X puzzles there is also one more difference that will actually make the puzzle easier to solve, and that is the cross of shaded squares that run from corner to corner. Each shaded diagonal must also contain the numbers 1-9, with only one instance of each number allowed. Your task is to fill each row, column, irregular shape and both shaded diagonal with the numbers 1 - 9, with only one instance of each number allowed in any row, column, irregular shape and shaded diagonal. With only 2 puzzles per page and a 6 x 9 inch layout, the Jigsaw Sudoku Puzzle Book provides a large, clear puzzle area. 200 Easy Jigsaw Sudoku X Puzzles Handy 6 x 9 inch Book Layout Easy to read (2 Puzzles per Page) No Advanced Solving Techniques Required Mystery Bonus Puzzles Ideal For Beginners Solutions Included

Book Jigsaw Sudoku X

    Book Details:
  • Author : Christian Demarco
  • Publisher :
  • Release : 2018-10-16
  • ISBN : 9781728868363
  • Pages : 130 pages

Download or read book Jigsaw Sudoku X written by Christian Demarco and published by . This book was released on 2018-10-16 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt: Jigsaw Sudoku, also known as Geometric Sudoku, Nonomino or Irregular Sudoku shares the same rules as a regular Sudoku puzzle, with the only difference being the fact that Jigsaw Sudoku has irregular shaped blocks as opposed to the 3x3 square blocks in a regular Sudoku puzzle. However, in Jigsaw Sudoku X puzzles there is also one more difference that will actually make the puzzle easier to solve, and that is the cross of shaded squares that run from corner to corner. Each shaded diagonal must also contain the numbers 1-9, with only one instance of each number allowed. Your task is to fill each row, column, irregular shape and both shaded diagonal with the numbers 1 - 9, with only one instance of each number allowed in any row, column, irregular shape and shaded diagonal. With only 2 puzzles per page and a 6 x 9 inch layout, the Jigsaw Sudoku Puzzle Book provides a large, clear puzzle area. 200 Easy Jigsaw Sudoku X Puzzles Handy 6 x 9 inch Book Layout Easy to read (2 Puzzles per Page) No Advanced Solving Techniques Required Mystery Bonus Puzzles Ideal For Beginners Solutions Included

Book 9 X 9 X Diagonal   Best Classic Sudoku   Luxurious Puzzles

Download or read book 9 X 9 X Diagonal Best Classic Sudoku Luxurious Puzzles written by Andrii Pitenko and published by Createspace Independent Publishing Platform. This book was released on 2018-07-02 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt: - 250 deluxe puzzles + surprise in 250 killer sudoku very hard (need to download and print). - Sudoku 9x9, separated by smaller squares of 3x3 cells. The entire playing field consists of 81 cells. It is required to fill empty cells with numbers from 1 to 9, each of the digits should appear only once in each row, column and 3x3 square. In this puzzle, the digits from 1 to 9 should not be repeated in the central diagonals. - 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

    Book Details:
  • Author : Christian Demarco
  • Publisher :
  • Release : 2018-10-16
  • ISBN : 9781728875323
  • Pages : 130 pages

Download or read book Jigsaw Sudoku X written by Christian Demarco and published by . This book was released on 2018-10-16 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt: Jigsaw Sudoku, also known as Geometric Sudoku, Nonomino or Irregular Sudoku shares the same rules as a regular Sudoku puzzle, with the only difference being the fact that Jigsaw Sudoku has irregular shaped blocks as opposed to the 3x3 square blocks in a regular Sudoku puzzle. However, in Jigsaw Sudoku X puzzles there is also one more difference that will actually make the puzzle easier to solve, and that is the cross of shaded squares that run from corner to corner. Each shaded diagonal must also contain the numbers 1-9, with only one instance of each number allowed. Your task is to fill each row, column, irregular shape and both shaded diagonal with the numbers 1 - 9, with only one instance of each number allowed in any row, column, irregular shape and shaded diagonal. With only 2 puzzles per page and a 6 x 9 inch layout, the Jigsaw Sudoku Puzzle Book provides a large, clear puzzle area. 200 Easy Jigsaw Sudoku X Puzzles Handy 6 x 9 inch Book Layout Easy to read (2 Puzzles per Page) No Advanced Solving Techniques Required Mystery Bonus Puzzles Ideal For Beginners Solutions Included

Book Jigsaw Sudoku X

    Book Details:
  • Author : Christian Demarco
  • Publisher :
  • Release : 2018-01-26
  • ISBN : 9781984275646
  • Pages : 122 pages

Download or read book Jigsaw Sudoku X written by Christian Demarco and published by . This book was released on 2018-01-26 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt: Jigsaw Sudoku, also known as Geometric Sudoku, Nonomino or Irregular Sudoku shares the same rules as a regular Sudoku puzzle, with the only difference being the fact that Jigsaw Sudoku has irregular shaped blocks as opposed to the 3x3 square blocks in a regular Sudoku puzzle. However, in Jigsaw Sudoku X puzzles there is one other feature that will actually make the puzzle easier to solve, and that is the cross of shaded squares that run from corner to corner. These shaded squares must also contain one instance of the numbers 1 to 9. Your task is to fill each row, column, irregular shape and shaded squares with the numbers 1 - 9, with only one instance of each number allowed in any row, column, irregular shape and each shaded diagonal. With only 2 puzzles per page and a 6 x 9 inch layout, the Jigsaw Sudoku Puzzle Book provides a large, clear puzzle area. * 200 Hard Puzzles * Handy 6 x 9 inch Book Layout * Easy to read (2 Puzzles per Page) * Advanced Solving Techniques are Required * Solutions Included

Book Jigsaw Sudoku X Pocket Rocket  100 Medium Pocket Size Jigsaw Sudoku x Puzzles   Volume 4

Download or read book Jigsaw Sudoku X Pocket Rocket 100 Medium Pocket Size Jigsaw Sudoku x Puzzles Volume 4 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 Jigsaw Sudoku X

    Book Details:
  • Author : Christian Demarco
  • Publisher :
  • Release : 2018-10-16
  • ISBN : 9781728864013
  • Pages : 130 pages

Download or read book Jigsaw Sudoku X written by Christian Demarco and published by . This book was released on 2018-10-16 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt: Jigsaw Sudoku, also known as Geometric Sudoku, Nonomino or Irregular Sudoku shares the same rules as a regular Sudoku puzzle, with the only difference being the fact that Jigsaw Sudoku has irregular shaped blocks as opposed to the 3x3 square blocks in a regular Sudoku puzzle. However, in Jigsaw Sudoku X puzzles there is also one more difference that will actually make the puzzle easier to solve, and that is the cross of shaded squares that run from corner to corner. Each shaded diagonal must also contain the numbers 1-9, with only one instance of each number allowed. Your task is to fill each row, column, irregular shape and both shaded diagonal with the numbers 1 - 9, with only one instance of each number allowed in any row, column, irregular shape and shaded diagonal. With only 2 puzzles per page and a 6 x 9 inch layout, the Jigsaw Sudoku Puzzle Book provides a large, clear puzzle area. 200 Easy Jigsaw Sudoku X Puzzles Handy 6 x 9 inch Book Layout Easy to read (2 Puzzles per Page) No Advanced Solving Techniques Required Mystery Bonus Puzzles Ideal For Beginners Solutions Included

Book Jigsaw Sudoku X

    Book Details:
  • Author : Christian Demarco
  • Publisher :
  • Release : 2018-01-26
  • ISBN : 9781984275967
  • Pages : 122 pages

Download or read book Jigsaw Sudoku X written by Christian Demarco and published by . This book was released on 2018-01-26 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt: Jigsaw Sudoku, also known as Geometric Sudoku, Nonomino or Irregular Sudoku shares the same rules as a regular Sudoku puzzle, with the only difference being the fact that Jigsaw Sudoku has irregular shaped blocks as opposed to the 3x3 square blocks in a regular Sudoku puzzle. However, in Jigsaw Sudoku X puzzles there is one other feature that will actually make the puzzle easier to solve, and that is the cross of shaded squares that run from corner to corner. These shaded squares must also contain one instance of the numbers 1 to 9. Your task is to fill each row, column, irregular shape and shaded squares with the numbers 1 - 9, with only one instance of each number allowed in any row, column, irregular shape and each shaded diagonal. With only 2 puzzles per page and a 6 x 9 inch layout, the Jigsaw Sudoku Puzzle Book provides a large, clear puzzle area. * 200 Hard Puzzles * Handy 6 x 9 inch Book Layout * Easy to read (2 Puzzles per Page) * Advanced Solving Techniques are Required * Solutions Included

Book Jigsaw Sudoku X Pocket Rocket  100 Medium Pocket Size Jigsaw Sudoku x Puzzles   Volume 2

Download or read book Jigsaw Sudoku X Pocket Rocket 100 Medium Pocket Size Jigsaw Sudoku x Puzzles Volume 2 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 Jigsaw Sudoku X

    Book Details:
  • Author : Christian Demarco
  • Publisher :
  • Release : 2018-10-17
  • ISBN : 9781728919690
  • Pages : 130 pages

Download or read book Jigsaw Sudoku X written by Christian Demarco and published by . This book was released on 2018-10-17 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt: Jigsaw Sudoku, also known as Geometric Sudoku, Nonomino or Irregular Sudoku shares the same rules as a regular Sudoku puzzle, with the only difference being the fact that Jigsaw Sudoku has irregular shaped blocks as opposed to the 3x3 square blocks in a regular Sudoku puzzle. However, in Jigsaw Sudoku X puzzles there is also one more difference that will actually make the puzzle easier to solve, and that is the cross of shaded squares that run from corner to corner. Each shaded diagonal must also contain the numbers 1-9, with only one instance of each number allowed. Your task is to fill each row, column, irregular shape and both shaded diagonal with the numbers 1 - 9, with only one instance of each number allowed in any row, column, irregular shape and shaded diagonal. With only 2 puzzles per page and a 6 x 9 inch layout, the Jigsaw Sudoku Puzzle Book provides a large, clear puzzle area. 200 Hard Jigsaw Sudoku X Puzzles Handy 6 x 9 inch Book Layout Easy to read (2 Puzzles per Page) Advanced Solving Techniques May be Required Mystery Bonus Puzzles Ideal For Intermediate Puzzle Solvers Solutions Included

Book Jigsaw Sudoku X

    Book Details:
  • Author : Christian Demarco
  • Publisher :
  • Release : 2018-10-17
  • ISBN : 9781728910888
  • Pages : 130 pages

Download or read book Jigsaw Sudoku X written by Christian Demarco and published by . This book was released on 2018-10-17 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt: Jigsaw Sudoku, also known as Geometric Sudoku, Nonomino or Irregular Sudoku shares the same rules as a regular Sudoku puzzle, with the only difference being the fact that Jigsaw Sudoku has irregular shaped blocks as opposed to the 3x3 square blocks in a regular Sudoku puzzle. However, in Jigsaw Sudoku X puzzles there is also one more difference that will actually make the puzzle easier to solve, and that is the cross of shaded squares that run from corner to corner. Each shaded diagonal must also contain the numbers 1-9, with only one instance of each number allowed. Your task is to fill each row, column, irregular shape and both shaded diagonal with the numbers 1 - 9, with only one instance of each number allowed in any row, column, irregular shape and shaded diagonal. With only 2 puzzles per page and a 6 x 9 inch layout, the Jigsaw Sudoku Puzzle Book provides a large, clear puzzle area. 200 Hard Jigsaw Sudoku X Puzzles Handy 6 x 9 inch Book Layout Easy to read (2 Puzzles per Page) Advanced Solving Techniques May be Required Mystery Bonus Puzzles Ideal For Intermediate Puzzle Solvers Solutions Included

Book Jigsaw Sudoku X

    Book Details:
  • Author : Christian Demarco
  • Publisher :
  • Release : 2018-01-26
  • ISBN : 9781984275226
  • Pages : 122 pages

Download or read book Jigsaw Sudoku X written by Christian Demarco and published by . This book was released on 2018-01-26 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt: Jigsaw Sudoku, also known as Geometric Sudoku, Nonomino or Irregular Sudoku shares the same rules as a regular Sudoku puzzle, with the only difference being the fact that Jigsaw Sudoku has irregular shaped blocks as opposed to the 3x3 square blocks in a regular Sudoku puzzle. However, in Jigsaw Sudoku X puzzles there is one other feature that will actually make the puzzle easier to solve, and that is the cross of shaded squares that run from corner to corner. These shaded squares must also contain one instance of the numbers 1 to 9. Your task is to fill each row, column, irregular shape and shaded squares with the numbers 1 - 9, with only one instance of each number allowed in any row, column, irregular shape and each shaded diagonal. With only 2 puzzles per page and a 6 x 9 inch layout, the Jigsaw Sudoku Puzzle Book provides a large, clear puzzle area. * 200 Hard Puzzles * Handy 6 x 9 inch Book Layout * Easy to read (2 Puzzles per Page) * Advanced Solving Techniques are Required * Solutions Included

Book Luxe Puzzles   8 X 8 X Diagonal   Best Classic Sudoku

Download or read book Luxe Puzzles 8 X 8 X Diagonal Best Classic Sudoku written by Andrii Pitenko and published by Createspace Independent Publishing Platform. This book was released on 2018-07-10 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt: - 250 deluxe puzzles + surprise in 250 killer sudoku very hard (need to download and print). - Sudoku 8x8, separated by smaller rectangles of 4x2 cells. It is necessary to fill empty cells with numbers from 1 to 8, each of the digits should appear only once in each line of the 8x8 square, 8x8 column and 4x2 rectangle. In this puzzle, the digits from 1 to 8 should not be repeated in the central diagonals. - 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