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250 Hard Classic Sudoku Puzzles 9x9
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Book Synopsis 250 Medium to Hard Classic Sudoku Puzzles 9x9 by : Anna Magey
Download or read book 250 Medium to Hard Classic Sudoku Puzzles 9x9 written by Anna Magey and published by Createspace Independent Publishing Platform. This book was released on 2018-01-29 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sudoku (also known as "Number Place") is a placement puzzle. The puzzle is most frequently a 9 x 9 grid made up of 3 x 3 subgrids (called "regions"). Some cells already contain numbers, known as "givens". The goal is to fill in the empty cells, one number in each, so that each column, row, and region contains the numbers 1 through 9 exactly once. Each number in the solution therefore occurs only once in each of three "directions", hence the "single numbers" implied by the puzzle's name.
Book Synopsis 250 Hard to Very Hard Classic Sudoku Puzzles 9x9 by : Anna Magey
Download or read book 250 Hard to Very Hard Classic Sudoku Puzzles 9x9 written by Anna Magey and published by Createspace Independent Publishing Platform. This book was released on 2018-01-29 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sudoku (also known as "Number Place") is a placement puzzle. The puzzle is most frequently a 9 x 9 grid made up of 3 x 3 subgrids (called "regions"). Some cells already contain numbers, known as "givens". The goal is to fill in the empty cells, one number in each, so that each column, row, and region contains the numbers 1 through 9 exactly once. Each number in the solution therefore occurs only once in each of three "directions", hence the "single numbers" implied by the puzzle's name.
Book Synopsis 250 Hard Classic Sudoku Puzzles 9x9 by : Anna Magey
Download or read book 250 Hard Classic Sudoku Puzzles 9x9 written by Anna Magey and published by Createspace Independent Publishing Platform. This book was released on 2018-01-25 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sudoku (also known as "Number Place") is a placement puzzle. The puzzle is most frequently a 9 x 9 grid made up of 3 x 3 subgrids (called "regions"). Some cells already contain numbers, known as "givens". The goal is to fill in the empty cells, one number in each, so that each column, row, and region contains the numbers 1 through 9 exactly once. Each number in the solution therefore occurs only once in each of three "directions", hence the "single numbers" implied by the puzzle's name.
Book Synopsis 250 Very Hard Classic Sudoku Puzzles 9x9 by : Anna Magey
Download or read book 250 Very Hard Classic Sudoku Puzzles 9x9 written by Anna Magey and published by Createspace Independent Publishing Platform. This book was released on 2018-01-23 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sudoku (also known as "Number Place") is a placement puzzle. The puzzle is most frequently a 9 x 9 grid made up of 3 x 3 subgrids (called "regions"). Some cells already contain numbers, known as "givens". The goal is to fill in the empty cells, one number in each, so that each column, row, and region contains the numbers 1 through 9 exactly once. Each number in the solution therefore occurs only once in each of three "directions", hence the "single numbers" implied by the puzzle's name.
Book Synopsis Brickwalldoku 400 Hard by : Basford Holmes
Download or read book Brickwalldoku 400 Hard written by Basford Holmes and published by Brickwalldoku Classic Sudoku 9. This book was released on 2018-10-04 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is not a movie, it is a climb to the top of the mastery of sudoku! You are ready?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.- 200 Professional (hard levels) - 200 Veteran (very hard levels) + 250 classic sudoku 9 x 9 bonus of a very difficult level (bonus puzzles need to be downloaded and printed)- only 1 verified solution- all answers are at the end of the book- develops memory, logical thinking, helps with concentration.- only original puzzles for the power of your brainIdeal gift for all fans of puzzles.A great book for free time and studying the mind.I hope you enjoy the book.I would really appreciate it if you write a review.Best regards, Basford Holme
Book Synopsis 1,000 + Sudoku Classic 9x9 by : Basford Holmes
Download or read book 1,000 + Sudoku Classic 9x9 written by Basford Holmes and published by . This book was released on 2019-11-30 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt: Positive brain, cool game. Suitable for adults and children. 6 puzzles per page. 250 Sudoku puzzles 9x9 easy levels. 250 Sudoku puzzles 9x9 medium levels. 250 Sudoku puzzles 9x9 hard levels. 252 Sudoku puzzles 9x9 extreme levels. Thick paper. Glossy cover. Sudoku puzzles of easy, medium, hard and extreme levels have a lot of names: sudoku, sudoku puzzles, sudoku game, sudoku solver, sudoku extreme, sudoku easy, sudoku medium, sudoku hard, sudoku very hard, daily sudoku, play sudoku, game sudoku, extreme sudoku puzzles, hard sudoku puzzles, very hard sudoku puzzles, easy sudoku puzzles, medium sudoku puzzles, le puzzle, daily puzzle, how to solve sudoku, logic puzzle games, su doku, puzzle en francais, daily jigsaw puzzle, 7sudoku, the puzzle, jigsaw sudoku, sudoku solution, the jigsaw puzzles, bubble puzzle, logic puzzles, sudoku for beginners, sudoku solutions, answers to sudoku puzzles, sudoku u, daily sudoku very hard, daily sudoku extreme, daily sudoku hard, daily sudoku easy, daily sudoku medium, sudoku creator, sudoku 9x9, sudoku puzzles collection, mega sudoku, best sudoku puzzles, all puzzle games, puzzle bubble, ultimate sudoku, sudoku of the day, best for puzzles sudoku, english sudoku puzzles, sudoku expert, monster sudoku, sudoku plus, puzzle pirates, sudoku x, epuzzle, sudoku net, sudoku mania, games puzzle games, fiendish sudoku, sudoku junior, usa sudoku, sudoku au, puzzle g, the sudoku, sudoku uk, sudoku evil, sudoku kingdom, usa today sudoku, hard extreme sudoku puzzles, best sudoku, big sudoku, addicted, how to sudoku, the daily sudoku, sudoku billions, sudoku maker, sudoku c, how to solve sudoku puzzles, sudoku name, daily sudoku game, sudoku o, blank sudoku grid, sudoku on, sudoku today hard, sudoku today easy, sudoku today medium, sudoku today extreme, sudoku sudoku, puzzled, sudoku competition, puzzle software, math sudoku, simple sudoku game. I hope you enjoy these puzzles. Best regards, Basford Holmes
Book Synopsis 400 Calcudoku Hard Puzzles 9 X 9 + Bonus 250 Classic Sudoku: Sudoku Hard Puzzles and Classic Sudoku 9x9 Very Hard Levels by : Basford Holmes
Download or read book 400 Calcudoku Hard Puzzles 9 X 9 + Bonus 250 Classic Sudoku: Sudoku Hard Puzzles and Classic Sudoku 9x9 Very Hard Levels written by Basford Holmes and published by Calcudoku Classic Sudoku. This book was released on 2018-09-27 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: Prepare your mind for an exciting excursion to the world of numbers. Way. This is a mathematical and logical puzzle. It is necessary to fill the grid with numbers so that in each line and in each column they are not repeated. The number in the corner of each selected block is the result of an arithmetic operation on the digits in this block. The numbers inside the block can be repeated. The puzzle can be called Square Wisdom, Kendoku. - 400 amusing classic puzzles + bonus in classic Sudoku 9x9 very hard levels (bonus puzzles need to be downloaded and printed) The way to mastery of Sudoku! - 400 unique Sudoku puzzles - fitness for your brain - Original Sudoku for the power of your brain - just tested puzzles - answers at the end of the book - all riddles have only one proven solution - good mind support in excellent form - develops memory, logical thinking, helps to focus - creative possibilities expand. Ideal gift for all fans of puzzles. A great book for free time and studying the mind. I hope you enjoy the book. I would really appreciate it if you write a review. Best regards, Basford Holmes
Book Synopsis 250 Hard Killer Sudoku 9x9: Sudoku Puzzle Book for Adults by : James Forest
Download or read book 250 Hard Killer Sudoku 9x9: Sudoku Puzzle Book for Adults written by James Forest and published by Book. This book was released on 2019-01-22 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sometimes classic also means superior. Killer Sudoku is a favorite pastime of many people the whole world over. In the years since the puzzles first reached monumental popularity, many puzzle makers have tried to experiment with and push the genre forward, crafting puzzles that are different and unique and that redefine what a sudoku puzzle can be. Among sudoku puzzle books, you will find plenty of variety, plenty of Killer Sudoku books for adults that you can turn to for a fresh experience. Sometimes, however, you just want the Killer Sudoku puzzle, something reminiscent of the sudoku puzzles you first did when you were falling in love with sudoku itself. What's wrong with the classics, right? If you are someone who has looked back fondly on the sudoku puzzles of years gone by, then Killer Sudoku Puzzles is the sudoku book for you. You can look back on all the wonderful hours you have spent playing the sudoku puzzles that you enjoy the most, the ones that are not quite simple but that are also never convoluted. The Killer Sudoku puzzles that you enjoy are the ones that don't feel the need to distract you with flair or fireworks. You want sudoku puzzles that are comfortable with their own straightforwardness! We are right there with you, right there filling in numbers, right there plotting out moves, and we want you to know that we have created this book because we share your passion for great Killer Sudoku puzzles. This is the Killer Sudoku puzzle book you have been searching for, a true-blue classic filled with new puzzles. Get solving! The handy size means you can carry your book wherever you roam. Puzzles are pre-checked to eliminate error potential. Other names that are searched for Sudoku: soduko, suduko.
Book Synopsis 1,000 + Sudoku Jigsaw 9x9 by : Basford Holmes
Download or read book 1,000 + Sudoku Jigsaw 9x9 written by Basford Holmes and published by . This book was released on 2019-10-30 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sudoku likes the brain. Suitable for adults and children. 6 puzzles per page. 250 jigsaw sudoku puzzles 9x9 easy levels. 250 jigsaw sudoku puzzles 9x9 medium levels. 250 jigsaw sudoku puzzles 9x9 hard levels. 252 jigsaw sudoku puzzles 9x9 extreme levels. Thick paper. Glossy cover. Sudoku puzzles of easy, medium, hard and extreme levels have a lot of names:sudoku, sudoku puzzles, sudoku game, sudoku solver, sudoku extreme, sudoku easy, sudoku medium, sudoku hard, sudoku very hard, daily sudoku, play sudoku, game sudoku, extreme sudoku puzzles, hard sudoku puzzles, very hard sudoku puzzles, easy sudoku puzzles, medium sudoku puzzles, le puzzle, sudoku with answers, sudoku grid, how to play sudoku, sudoku answers, play sudoku very hard, play sudoku extreme, play sudoku hard, play sudoku easy, play sudoku medium, sudoku puzzle solver, play sudoku game, simple sudoku, mini sudoku, sudoku classic, sudoku puzzle game, super sudoku, how to play sudoku game, jigsaw puzzle, puzzle games, i want to play sudoku, sudoku challenge, sudoku pro, simple sudoku puzzle, sud0ku, find sudoku, play sudoku puzzles, play sudoku now, puzzle e, jigsaw puzzle games, brain games sudoku, play puzzle games, puzzle maker, life sudoku, sudoku number puzzle, maths puzzle games, un puzzle, jigsaw puzzel, sudoku puzzels, maths puzzles, loco sudoku, mathematical puzzles, very hard sudoku printable, extreme sudoku printable, hard sudoku printable, easy sudoku printable, sudoku card game, puzzle inlay, sudoku number game, sukado game, puzzlemania, puzle, puzzle bubble game, games sudoku very hard, games sudoku extreme, games sudoku hard, games sudoku easy, games sudoku medium, sudoku number, jigsaw game. I hope you enjoy these puzzles. Best regards, Basford Holmes
Book Synopsis 250 Medium to Hard Killer Sudoku 9x9: Sudoku Puzzle Book for Adults by : James Forest
Download or read book 250 Medium to Hard Killer Sudoku 9x9: Sudoku Puzzle Book for Adults written by James Forest and published by Book. This book was released on 2019-01-22 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sometimes classic also means superior. Killer Sudoku is a favorite pastime of many people the whole world over. In the years since the puzzles first reached monumental popularity, many puzzle makers have tried to experiment with and push the genre forward, crafting puzzles that are different and unique and that redefine what a sudoku puzzle can be. Among sudoku puzzle books, you will find plenty of variety, plenty of Killer Sudoku books for adults that you can turn to for a fresh experience. Sometimes, however, you just want the Killer Sudoku puzzle, something reminiscent of the sudoku puzzles you first did when you were falling in love with sudoku itself. What's wrong with the classics, right? If you are someone who has looked back fondly on the sudoku puzzles of years gone by, then Killer Sudoku Puzzles is the sudoku book for you. You can look back on all the wonderful hours you have spent playing the sudoku puzzles that you enjoy the most, the ones that are not quite simple but that are also never convoluted. The Killer Sudoku puzzles that you enjoy are the ones that don't feel the need to distract you with flair or fireworks. You want sudoku puzzles that are comfortable with their own straightforwardness! We are right there with you, right there filling in numbers, right there plotting out moves, and we want you to know that we have created this book because we share your passion for great Killer Sudoku puzzles. This is the Killer Sudoku puzzle book you have been searching for, a true-blue classic filled with new puzzles. Get solving! The handy size means you can carry your book wherever you roam. Puzzles are pre-checked to eliminate error potential. Other names that are searched for Sudoku: soduko, suduko.
Book Synopsis 400 Jigsaw Puzzles 9 X 9 Very Hard + Bonus 250 Labyrinth 20 X 20: Sudoku Very Hard Levels and Maze Puzzles Very Hard Level by : Basford Holmes
Download or read book 400 Jigsaw Puzzles 9 X 9 Very Hard + Bonus 250 Labyrinth 20 X 20: Sudoku Very Hard Levels and Maze Puzzles Very Hard Level written by Basford Holmes and published by Jigsaw Classic Sudoku. This book was released on 2018-09-22 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: Get ready for these super heavy puzzles. In this sudoku 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 square of 9x9. 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). - 400 high-quality classic puzzles + bonus in 250 labyrinths 20 x 20 very hard levels (bonus puzzles need to be downloaded and printed) The way to mastery of Sudoku! - 400 unique Sudoku puzzles - fitness for your brain - printed on high-quality, clean white paper - Original Sudoku for the power of your brain - just tested puzzles - answers at the end of the book - all the riddles have only one proven solution - good mind support in great shape - develops memory, logical thinking, helps to focus - creative opportunities are expanding. Ideal gift for all fans of puzzles. A great book for free time and studying the mind. I hope you enjoy the book. I would really appreciate it if you write a review. Best regards, Basford Holmes
Book Synopsis 250 Hard Sudoku X 9x9 by : James Forest
Download or read book 250 Hard Sudoku X 9x9 written by James Forest and published by Independently Published. This book was released on 2019-01-09 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sometimes classic also means superior. Sudoku X is a favorite pastime of many people the whole world over. In the years since the puzzles first reached monumental popularity, many puzzle makers have tried to experiment with and push the genre forward, crafting puzzles that are different and unique and that redefine what a sudoku puzzle can be. Among sudoku puzzle books, you will find plenty of variety, plenty of Sudoku X books for adults that you can turn to for a fresh experience. Sometimes, however, you just want the Sudoku X puzzle, something reminiscent of the sudoku puzzles you first did when you were falling in love with sudoku itself. What's wrong with the classics, right? If you are someone who has looked back fondly on the sudoku puzzles of years gone by, then Sudoku X Puzzles is the sudoku book for you. You can look back on all the wonderful hours you have spent playing the sudoku puzzles that you enjoy the most, the ones that are not quite simple but that are also never convoluted. The Sudoku X puzzles that you enjoy are the ones that don't feel the need to distract you with flair or fireworks. You want sudoku puzzles that are comfortable with their own straightforwardness! We are right there with you, right there filling in numbers, right there plotting out moves, and we want you to know that we have created this book because we share your passion for great Sudoku X puzzles. This is the Sudoku X puzzle book you have been searching for, a true-blue classic filled with new puzzles. Get solving! The handy size means you can carry your book wherever you roam. Puzzles are pre-checked to eliminate error potential. Other names that are searched for Sudoku: soduko, suduko.
Book Synopsis 400 Calcudoku Puzzles 9 X 9 + Bonus 250 Classic Sudoku: Sudoku Easy, Medium, Hard, Very Hard Puzzles and Classic Sudoku 9x9 Very Hard Levels by : Basford Holmes
Download or read book 400 Calcudoku Puzzles 9 X 9 + Bonus 250 Classic Sudoku: Sudoku Easy, Medium, Hard, Very Hard Puzzles and Classic Sudoku 9x9 Very Hard Levels written by Basford Holmes and published by Calcudoku Classic Sudoku. This book was released on 2018-09-26 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: Prepare your mind for an exciting excursion to the world of numbers. This is a mathematical and logical puzzle. It is necessary to fill the grid with numbers so that in each line and in each column they are not repeated. The number in the corner of each selected block is the result of an arithmetic operation on the digits in this block. The numbers inside the block can be repeated. The puzzle can be called Square Wisdom, Kendoku. - 400 amusing classic puzzles + bonus in classic Sudoku 9x9 very hard levels (bonus puzzles need to be downloaded and printed) The way to mastery of Sudoku! The puzzles will lead you from the light level to the super heavy. - 400 unique Sudoku puzzles - 4 difficulty levels (all difficulty levels) - fitness for your brain - Original Sudoku for the power of your brain - just tested puzzles - answers at the end of the book - all riddles have only one proven solution - good mind support in excellent form - develops memory, logical thinking, helps to focus - creative possibilities expand. Ideal gift for all fans of puzzles. A great book for free time and studying the mind. I hope you enjoy the book. I would really appreciate it if you write a review. Best regards, Basford Holmes
Book Synopsis 250 Medium to Hard Sudoku X 9x9 by : James Forest
Download or read book 250 Medium to Hard Sudoku X 9x9 written by James Forest and published by Independently Published. This book was released on 2019-01-09 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sometimes classic also means superior. Sudoku X is a favorite pastime of many people the whole world over. In the years since the puzzles first reached monumental popularity, many puzzle makers have tried to experiment with and push the genre forward, crafting puzzles that are different and unique and that redefine what a sudoku puzzle can be. Among sudoku puzzle books, you will find plenty of variety, plenty of Sudoku X books for adults that you can turn to for a fresh experience. Sometimes, however, you just want the Sudoku X puzzle, something reminiscent of the sudoku puzzles you first did when you were falling in love with sudoku itself. What's wrong with the classics, right? If you are someone who has looked back fondly on the sudoku puzzles of years gone by, then Sudoku X Puzzles is the sudoku book for you. You can look back on all the wonderful hours you have spent playing the sudoku puzzles that you enjoy the most, the ones that are not quite simple but that are also never convoluted. The Sudoku X puzzles that you enjoy are the ones that don't feel the need to distract you with flair or fireworks. You want sudoku puzzles that are comfortable with their own straightforwardness! We are right there with you, right there filling in numbers, right there plotting out moves, and we want you to know that we have created this book because we share your passion for great Sudoku X puzzles. This is the Sudoku X puzzle book you have been searching for, a true-blue classic filled with new puzzles. Get solving! The handy size means you can carry your book wherever you roam. Puzzles are pre-checked to eliminate error potential. Other names that are searched for Sudoku: soduko, suduko.
Book Synopsis 400 Calcudoku Medium - Hard Puzzles 9 X 9 + Bonus 250 Classic Sudoku: Sudoku Medium - Hard Puzzles and Classic Sudoku 9x9 Very Hard Levels by : Basford Holmes
Download or read book 400 Calcudoku Medium - Hard Puzzles 9 X 9 + Bonus 250 Classic Sudoku: Sudoku Medium - Hard Puzzles and Classic Sudoku 9x9 Very Hard Levels written by Basford Holmes and published by Calcudoku Classic Sudoku. This book was released on 2018-09-30 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: Prepare your mind for an exciting excursion to the world of numbers. Prepare a pencil and mood! This is a mathematical and logical puzzle. It is necessary to fill the grid with numbers so that in each line and in each column they are not repeated. The number in the corner of each selected block is the result of an arithmetic operation on the digits in this block. The numbers inside the block can be repeated. The puzzle can be called Square Wisdom, Kendoku. - 400 amusing classic puzzles + bonus in classic Sudoku 9x9 very hard levels (bonus puzzles need to be downloaded and printed) The way to mastery of Sudoku! - 400 unique Sudoku puzzles - fitness for your brain - Original Sudoku for the power of your brain - just tested puzzles - answers at the end of the book - all riddles have only one proven solution - good mind support in the excellent form - develops memory, logical thinking, helps to focus - creative possibilities expand. Ideal gift for all fans of puzzles. A great book for free time and studying the mind. I hope you enjoy the book. I would really appreciate it if you write a review. Best regards, Basford Holmes
Book Synopsis 400 Calcudoku Hard - Very Hard Puzzles 9 X 9 + Bonus 250 Classic Sudoku: Sudoku Hard - Very Hard Puzzles and Classic Sudoku 9 X 9 Very Hard Levels by : Basford Holmes
Download or read book 400 Calcudoku Hard - Very Hard Puzzles 9 X 9 + Bonus 250 Classic Sudoku: Sudoku Hard - Very Hard Puzzles and Classic Sudoku 9 X 9 Very Hard Levels written by Basford Holmes and published by Calcudoku Classic Sudoku. This book was released on 2018-09-30 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: Prepare your mind for an exciting excursion to the world of numbers. Top Sudoku calcudoku. Prepare a pencil and mood! This is a mathematical and logical puzzle. It is necessary to fill the grid with numbers so that in each line and in each column they are not repeated. The number in the corner of each selected block is the result of an arithmetic operation on the digits in this block. The numbers inside the block can be repeated. The puzzle can be called Square Wisdom, Kendoku. - 400 amusing classic puzzles + bonus in classic Sudoku 9x9 very hard levels (bonus puzzles need to be downloaded and printed) The way to mastery of Sudoku! - 400 unique Sudoku puzzles - fitness for your brain - Original Sudoku for the power of your brain - just tested puzzles - answers at the end of the book - all riddles have only one proven solution - good mind support in the excellent form - develops memory, logical thinking, helps to focus - creative possibilities expand. Ideal gift for all fans of puzzles. A great book for free time and studying the mind. I hope you enjoy the book. I would really appreciate it if you write a review. Best regards, Basford Holmes
Book Synopsis 9 X 9 Anti-Diagonal - Best Classic Sudoku - Luxurious Puzzles by : Andrii Pitenko
Download or read book 9 X 9 Anti-Diagonal - Best Classic Sudoku - Luxurious Puzzles written by Andrii Pitenko and published by Createspace Independent Publishing Platform. This book was released on 2018-07-09 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt: - 250 wonderful 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 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 Pitenk
