Download or read book CalcuDoku Mixed Grids Easy to Hard Volume 1 276 Puzzles written by Nick Snels and published by PuzzleBooks.net. This book was released on 2014-10-11 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: When you buy this book you get an electronic version (PDF file) of the interior of this book. Become a master in solving CalcuDoku. You will experience CalcuDoku 7x7, CalcuDoku 8x8 and CalcuDoku 9x9. You get the perfect mix of different sizes of CalcuDoku to keep you entertained for weeks. After solving all the puzzles in this book, you will be a CalcuDoku Pro. You start with easy CalcuDoku puzzles, which keep getting bigger and bigger and you gradually build your way up to extremely hard CalcuDoku puzzles. Once you pick up this book, you won't be able to put it back down. You have been warned! CalcuDoku Mixed Grids - Easy to Hard is a collection of 276 puzzles: 24 easy CalcuDoku puzzles per grid size, totaling 72 easy puzzles 24 medium CalcuDoku puzzles per grid size, totaling 72 medium puzzles 24 hard CalcuDoku puzzles per grid size, totaling 72 hard puzzles 60 extra logic puzzles I guarantee that every logic puzzle in this CalcuDoku puzzle book has been carefully checked to ensure that each puzzle has only 1 solution. None of the puzzles in this book will appear in any of the other PuzzleBooks.net books. CalcuDoku is also known as Square Wisdom, CanCan, MinuPlu, Mathdoku and Calcu-Doku.

Download or read book Flower Sudoku Easy to Extreme Volume 1 276 Logic Puzzles written by Nick Snels and published by PuzzleBooks.net. This book was released on 2015-01-11 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: When you buy this book you get an electronic version (PDF file) of the interior of this book. Become a master in solving Flower Sudoku. After solving all the puzzles in this book, you will be a Flower Sudoku Pro. You start with easy Flower Sudoku puzzles and you gradually build your way up to extremely difficult Flower Sudoku puzzles. Once you pick up this book, you won't be able to put it back down. You have been warned! Flower Sudoku - Easy to Extreme is a collection of 276 puzzles: 54 easy Flower Sudoku puzzles 54 medium Flower Sudoku puzzles 54 hard Flower Sudoku puzzles 54 extreme Flower Sudoku puzzles 60 extra logic puzzles Flower Sudoku has five Sudoku puzzles in layout. The center grid is fully covered by the remaining four sub-puzzles. For each grid the goal is to fill in the empty cells, one number in each, so that each column, row, and region contains the numbers 1-9 exactly once. This means that the numbers must be placed correctly for all the five grids. I guarantee that every logic puzzle in this Flower Sudoku puzzle book has been carefully checked to ensure that each puzzle has only 1 solution. None of the puzzles in this book will appear in any of the other English PuzzleBooks.net books. Flower Sudoku is also known as Musketry Sudoku.

Download or read book Futoshiki Mixed Grids Easy to Hard Volume 1 276 Puzzles written by Nick Snels and published by PuzzleBooks.net. This book was released on 2014-10-17 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: When you buy this book you get an electronic version (PDF file) of the interior of this book. Become a master in solving Futoshiki. You will experience Futoshiki 7x7, Futoshiki 8x8 and Futoshiki 9x9. You get the perfect mix of different sizes of Futoshiki to keep you entertained for weeks. After solving all the puzzles in this book, you will be a Futoshiki Pro. You start with easy Futoshiki puzzles, which keep getting bigger and bigger and you gradually build your way up to extremely hard Futoshiki puzzles. Once you pick up this book, you won't be able to put it back down. You have been warned! Futoshiki Mixed Grids - Easy to Hard is a collection of 276 puzzles: 24 easy Futoshiki puzzles per grid size, totaling 72 easy puzzles 24 medium Futoshiki puzzles per grid size, totaling 72 medium puzzles 24 hard Futoshiki puzzles per grid size, totaling 72 hard puzzles 60 extra logic puzzles The goal of Futoshiki is to place one number in each empty cell, so that each column and row contains each number exactly once. Some numbers may be given at the start. In addition, inequality constraints are specified between some of the squares, such that the number must be higher or lower than its neighbor. These constraints must be honored as the grid is filled out. I guarantee that every logic puzzle in this Futoshiki puzzle book has been carefully checked to ensure that each puzzle has only 1 solution. None of the puzzles in this book will appear in any of the other PuzzleBooks.net books. Futoshiki is also known as Hutoshiki and Unequal.

Download or read book Center Dot Sudoku Easy to Extreme Volume 1 276 Puzzles written by Nick Snels and published by PuzzleBooks.net. This book was released on 2014-11-06 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: When you buy this book you get an electronic version (PDF file) of the interior of this book. Become a master in solving Center Dot Sudoku. After solving all the puzzles in this book, you will be a Center Dot Sudoku Pro. You start with easy Center Dot Sudoku puzzles and you gradually build your way up to extremely difficult Center Dot Sudoku puzzles. Once you pick up this book, you won't be able to put it back down. You have been warned! Center Dot Sudoku - Easy to Extreme is a collection of 276 puzzles: 54 easy Center Dot Sudoku puzzles 54 medium Center Dot Sudoku puzzles 54 hard Center Dot Sudoku puzzles 54 extreme Center Dot Sudoku puzzles 60 extra logic puzzles The goal of Center Dot Sudoku is to fill in the empty cells, one number in each, so that each column, row, region and shaded central cells of each region contain the numbers 1-9 exactly once. I guarantee that every logic puzzle in this Center Dot Sudoku X puzzle book has been carefully checked to ensure that each puzzle has only 1 solution. None of the puzzles in this book will appear in any of the other PuzzleBooks.net books. Center Dot Sudoku is also known as Centerdot Sudoku, Center-Dot Sudoku.

Download or read book Numbricks Mixed Grids Easy to Hard Volume 1 276 Puzzles written by Nick Snels and published by PuzzleBooks.net. This book was released on 2014-10-17 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: When you buy this book you get an electronic version (PDF file) of the interior of this book. Become a master in solving Numbricks. You will experience Numbricks 10x10, Numbricks 13x13 and Numbricks 15x15. You get the perfect mix of different sizes of Numbricks to keep you entertained for weeks. After solving all the puzzles in this book, you will be a Numbricks Pro. You start with easy Numbricks puzzles, which keep getting bigger and bigger and you gradually build your way up to extremely hard Numbricks puzzles. Once you pick up this book, you won't be able to put it back down. You have been warned! Numbricks Mixed Grids - Easy to Hard is a collection of 276 puzzles: 24 easy Numbricks puzzles per grid size, totaling 72 easy puzzles 24 medium Numbricks puzzles per grid size, totaling 72 medium puzzles 24 hard Numbricks puzzles per grid size, totaling 72 hard puzzles 60 extra logic puzzles The goal of Numbricks is to fill in the missing numbers, in sequential order, going horizontally and vertically only. Diagonal paths are not allowed. I guarantee that every logic puzzle in this Numbricks puzzle book has been carefully checked to ensure that each puzzle has only 1 solution. None of the puzzles in this book will appear in any of the other PuzzleBooks.net books.

Download or read book Hyper Sudoku 9x9 Easy to Extreme Volume 1 276 Puzzles written by Nick Snels and published by PuzzleBooks.net. This book was released on 2014-10-20 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: When you buy this book you get an electronic version (PDF file) of the interior of this book. Become a master in solving Hyper Sudoku 9x9. After solving all the puzzles in this book, you will be a Hyper Sudoku Pro. You start with easy Hyper Sudoku puzzles and you gradually build your way up to extremely difficult Hyper Sudoku puzzles. Once you pick up this book, you won't be able to put it back down. You have been warned! Hyper Sudoku 9x9 - Easy to Extreme is a collection of 276 puzzles: 54 easy Hyper Sudoku 9x9 puzzles 54 medium Hyper Sudoku 9x9 puzzles 54 hard Hyper Sudoku 9x9 puzzles 54 extreme Hyper Sudoku 9x9 puzzles 60 extra logic puzzles The goal of Hyper Sudoku is to fill in the empty cells, one number in each, so that each column, row, and region contains each number exactly once. Furthermore, Hyper Sudoku contains four colored regions, each colored region contains each number exactly once. I guarantee that every logic puzzle in this Hyper Sudoku puzzle book has been carefully checked to ensure that each puzzle has only 1 solution. None of the puzzles in this book will appear in any of the other PuzzleBooks.net books. Hyper Sudoku is also known as Windoku, Four-Box Sudoku, Hypersudoku, NRC Sudoku and Four-Square Sudoku.

Download or read book Consecutive Sudoku Easy to Extreme Volume 1 276 Logic Puzzles written by Nick Snels and published by PuzzleBooks.net. This book was released on 2015-01-10 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: When you buy this book you get an electronic version (PDF file) of the interior of this book. Become a master in solving Consecutive Sudoku. After solving all the puzzles in this book, you will be a Consecutive Sudoku Pro. You start with easy Consecutive Sudoku puzzles and you gradually build your way up to extremely difficult Consecutive Sudoku puzzles. Once you pick up this book, you won't be able to put it back down. You have been warned! Consecutive Sudoku - Easy to Extreme is a collection of 276 puzzles: 54 easy Consecutive Sudoku puzzles 54 medium Consecutive Sudoku puzzles 54 hard Consecutive Sudoku puzzles 54 extreme Consecutive Sudoku puzzles 60 extra logic puzzles The goal of Consecutive Sudoku is to fill in the empty cells so that each column, row, and region contains each number exactly once. All the places where orthogonally adjacent cells are consecutive numbers have been marked. I guarantee that every logic puzzle in this Consecutive Sudoku puzzle book has been carefully checked to ensure that each puzzle has only 1 solution. None of the puzzles in this book will appear in any of the other English PuzzleBooks.net books. Consecutive Sudoku is also known as 1-away Disallowed Number Place.

Download or read book CalcuDoku Mixed Grids Deluxe Hard Volume 14 468 Logic Puzzles written by Nick Snels and published by PuzzleBooks.net. This book was released on 2014-12-20 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: When you buy this book you get an electronic version (PDF file) of the interior of this book. CalcuDoku is a fun and addicting logic puzzle game that combines Sudoku with math. CalcuDoku is a fun way for kids and adults to practice addition, subtraction, multiplication, and division facts. This book is ideal for you if you love to solve difficult CalcuDoku puzzles no matter their size. You do not need to wade through tons of easy CalcuDoku puzzles before getting to the real brain teasers. You will experience extremely difficult CalcuDoku 7x7, CalcuDoku 8x8 and CalcuDoku 9x9. You get the perfect mix of different sizes of CalcuDoku to keep you entertained for weeks. Once you pick up this book, you won't be able to put it back down. You have been warned! CalcuDoku Mixed Grids Deluxe - Hard is a collection of 468 puzzles: 136 hard CalcuDoku 7x7 puzzles 136 hard CalcuDoku 8x8 puzzles 136 hard CalcuDoku 9x9 puzzles 60 extra logic puzzles I guarantee that every logic puzzle in this CalcuDoku puzzle book has been carefully checked to ensure that each puzzle has only 1 solution. None of the puzzles in this book will appear in any of the other English PuzzleBooks.net books. CalcuDoku is also known as Square Wisdom, CanCan, MinuPlu, Mathdoku and Calcu-Doku.

Download or read book Numbricks Mixed Grids Large Print Medium Volume 9 276 Logic Puzzles written by Nick Snels and published by PuzzleBooks.net. This book was released on 2014-12-20 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt: When you buy this book you get an electronic version (PDF file) of the interior of this book. Numbricks is a fun and addicting logic puzzle game. It is very similar to Hidoku. The goal of Numbricks is to fill in the missing numbers, in sequential order, going horizontally and vertically only. Unlike Hidoku, diagonal paths are not allowed. This book is ideal for you if you already know how to solve Numbricks puzzles but you find our hard Numbricks puzzles too difficult. You will experience Numbricks 13x13, Numbricks 14x14 and Numbricks 15x15. You get the perfect mix of different sizes of Numbricks to keep you entertained for weeks. Once you pick up this book, you won't be able to put it back down. You have been warned! Only 1 large print puzzle per page, with lots of white space for scribbling. Numbricks Mixed Grids Large Print - Medium is a collection of 276 puzzles: 72 medium Numbricks 10x10 puzzles 72 medium Numbricks 13x13 puzzles 72 medium Numbricks 15x15 puzzles 60 extra logic puzzles The goal of Numbricks is to fill in the missing numbers, in sequential order, going horizontally and vertically only. Diagonal paths are not allowed. I guarantee that every logic puzzle in this Numbricks puzzle book has been carefully checked to ensure that each puzzle has only 1 solution. None of the puzzles in this book will appear in any of the other PuzzleBooks.net books.

Download or read book Consecutive Sudoku Deluxe Easy to Extreme Volume 7 468 Logic Puzzles written by Nick Snels and published by PuzzleBooks.net. This book was released on 2015-01-10 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: When you buy this book you get an electronic version (PDF file) of the interior of this book. Become a master in solving Consecutive Sudoku. After solving all the puzzles in this book you will be a Consecutive Sudoku Pro. You start with easy Consecutive Sudoku puzzles and you gradually build your way up to extremely difficult Consecutive Sudoku puzzles. Once you pick up this book, you won't be able to put it back down. You have been warned! Consecutive Sudoku Large Print - Easy to Extreme is a collection of 468 puzzles: 102 easy Consecutive Sudoku puzzles 102 medium Consecutive Sudoku puzzles 102 hard Consecutive Sudoku puzzles 102 extreme Consecutive Sudoku puzzles 60 extra logic puzzles The goal of Consecutive Sudoku is to fill in the empty cells so that each column, row, and region contains each number exactly once. All the places where orthogonally adjacent cells are consecutive numbers have been marked. I guarantee that every logic puzzle in this Consecutive Sudoku puzzle book has been carefully checked to ensure that each puzzle has only 1 solution. None of the puzzles in this book will appear in any of the other English PuzzleBooks.net books. Consecutive Sudoku is also known as 1-away Disallowed Number Place.

Download or read book Numbricks Mixed Grids Large Print Hard Volume 10 276 Logic Puzzles written by Nick Snels and published by PuzzleBooks.net. This book was released on 2014-12-20 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt: When you buy this book you get an electronic version (PDF file) of the interior of this book. Numbricks is a fun and addicting logic puzzle game. It is very similar to Hidoku. The goal of Numbricks is to fill in the missing numbers, in sequential order, going horizontally and vertically only. Unlike Hidoku, diagonal paths are not allowed. This book is ideal for you if you love to solve difficult and big Numbricks puzzles. You do not need to wade through tons of easy Numbricks puzzles before getting to the real brain teasers. You will experience Numbricks 13x13, Numbricks 14x14 and Numbricks 15x15. You get the perfect mix of different sizes of Numbricks to keep you entertained for weeks. Once you pick up this book, you won't be able to put it back down. You have been warned! Only 1 large print puzzle per page, with lots of white space for scribbling. Numbricks Mixed Grids Large Print - Hard is a collection of 276 puzzles: 72 hard Numbricks 10x10 puzzles 72 hard Numbricks 13x13 puzzles 72 hard Numbricks 15x15 puzzles 60 extra logic puzzles I guarantee that every logic puzzle in this Numbricks puzzle book has been carefully checked to ensure that each puzzle has only 1 solution. None of the puzzles in this book will appear in any of the other PuzzleBooks.net books.

Download or read book Anti Knight Sudoku 12x12 Easy to Extreme Volume 3 276 Puzzles written by Nick Snels and published by PuzzleBooks.net. This book was released on 2014-11-08 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: When you buy this book you get an electronic version (PDF file) of the interior of this book. Become a master in solving Anti-Knight Sudoku 12x12. After solving all the puzzles in this book, you will be a Anti-Knight Sudoku Pro. You start with easy Anti-Knight Sudoku puzzles and you gradually build your way up to extremely difficult Anti-Knight Sudoku puzzles. Once you pick up this book, you won't be able to put it back down. You have been warned! Anti-Knight Sudoku 12x12 - Easy to Extreme is a collection of 276 puzzles: 54 easy Anti-Knight Sudoku 12x12 puzzles 54 medium Anti-Knight Sudoku 12x12 puzzles 54 hard Anti-Knight Sudoku 12x12 puzzles 54 extreme Anti-Knight Sudoku 12x12 puzzles 60 extra logic puzzles The goal of Anti-Knight Sudoku is to fill in the empty cells, one number in each, so that each column, row, and region contains each number exactly once and all cells at a chess knight move (at a distance of 2 by 1) must hold different numbers. I guarantee that every logic puzzle in this Anti-Knight Sudoku 12x12 puzzle book has been carefully checked to ensure that each puzzle has only 1 solution. None of the puzzles in this book will appear in any of the other PuzzleBooks.net books. Anti-Knight Sudoku is also known as No Knight Step Sudoku.

Download or read book Hoshi Sudoku Large Print Easy to Extreme Volume 6 276 Puzzles written by Nick Snels and published by PuzzleBooks.net. This book was released on 2014-11-22 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt: When you buy this book you get an electronic version (PDF file) of the interior of this book. Become a master in solving Hoshi Sudoku. After solving all the puzzles in this book, you will be a Hoshi Sudoku Pro. You start with easy Hoshi Sudoku puzzles and you gradually build your way up to extremely difficult Hoshi Sudoku puzzles. Once you pick up this book, you won't be able to put it back down. You have been warned! Only 1 large print puzzle per page, with lots of white space for scribbling. Hoshi Sudoku Large Print - Easy to Extreme is a collection of 276 puzzles: 54 easy Hoshi Sudoku puzzles 54 medium Hoshi Sudoku puzzles 54 hard Hoshi Sudoku puzzles 54 extreme Hoshi Sudoku puzzles 60 extra logic puzzles Hoshi Sudoku consists of six large triangles. You must place the numbers 1-9 into the triangular cells of each large triangle. Every line, even an uncontinuous line, contains every number only once. I guarantee that every logic puzzle in this Hoshi Sudoku puzzle book has been carefully checked to ensure that each puzzle has only 1 solution. None of the puzzles in this book will appear in any of the other English PuzzleBooks.net books.

Download or read book Killer Sudoku 9x9 Deluxe Easy to Hard Volume 6 462 Puzzles written by Nick Snels and published by PuzzleBooks.net. This book was released on 2014-10-08 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: When you buy this book you get an electronic version (PDF file) of the interior of this book. Become a master in solving Killer Sudoku 9x9. After solving all the puzzles in this book, you will be a Killer Sudoku Pro. You start with easy Killer Sudoku puzzles and you gradually build your way up to extremely hard Killer Sudoku puzzles. The goal of Killer Sudoku is to fill in the empty cells, one number in each, so that each column, row, and region contains each number exactly once. The sum of all numbers in a cage (indicated by the dashed lines) must match the small number printed in its corner. No number can be repeated within a cage. Killer Sudoku 9x9 Deluxe - Easy to Hard is a collection of 462 puzzles: 136 easy Killer Sudoku 9x9 puzzles 136 medium Killer Sudoku 9x9 puzzles 136 hard Killer Sudoku 9x9 puzzles 54 extra logic puzzles I guarantee that every logic puzzle in this Killer Sudoku puzzle book has been carefully checked to ensure that each puzzle has only 1 solution. None of the puzzles in this book will appear in any of the other PuzzleBooks.net books. Killer Sudoku is also known as Sums Sudoku, Sumdoku, Sum Doku, Addoku, Killer Su Doku, Samunamupure, Kikagaku Nampure, Samu Nanpure, Sums Number Place.

Download or read book Slitherlink Mixed Grids Deluxe Easy to Hard Volume 6 474 Puzzles written by Nick Snels and published by PuzzleBooks.net. This book was released on 2014-10-18 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: When you buy this book you get an electronic version (PDF file) of the interior of this book. Become a master in solving Slitherlink. You will experience Slitherlink 15x15, Slitherlink 20x20 and Slitherlink 25x25. You get the perfect mix of different sizes of Slitherlink to keep you entertained for weeks. After solving all the puzzles in this book, you will be a Slitherlink Pro. You start with easy Slitherlink puzzles, which keep getting bigger and bigger and you gradually build your way up to extremely hard Slitherlink puzzles. Once you pick up this book, you won't be able to put it back down. You have been warned! Slitherlink Mixed Grids Deluxe - Easy to Hard is a collection of 474 puzzles: 48 easy Slitherlink puzzles per grid size, totaling 144 easy puzzles 48 medium Slitherlink puzzles per grid size, totaling 144 medium puzzles 48 hard Slitherlink puzzles per grid size, totaling 144 hard puzzles 42 extra logic puzzles The goal of Slitherlink is to connect horizontally and vertically adjacent dots so that the lines form one single loop with no loose ends. In addition, the number inside a square represents how many of its four sides are segments in the loop. Dotted squares without a number can have any number of loop sides. I guarantee that every logic puzzle in this Slitherlink puzzle book has been carefully checked to ensure that each puzzle has only 1 solution. None of the puzzles in this book will appear in any of the other PuzzleBooks.net books. Slitherlink is also known as Fences, Loop the Loop, Dotty Dilemma, Sli-Lin, Great Wall of China, Takegaki, Loopy, Ouroboros, Suriza and Slither Link.

Download or read book Anti Diagonal Sudoku 16x16 Easy to Extreme Volume 2 276 Puzzles written by Nick Snels and published by PuzzleBooks.net. This book was released on 2014-11-08 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: When you buy this book you get an electronic version (PDF file) of the interior of this book. Become a master in solving Anti Diagonal Sudoku 16x16. After solving all the puzzles in this book, you will be a Anti Diagonal Sudoku Pro. You start with easy Anti Diagonal Sudoku puzzles and you gradually build your way up to extremely difficult Anti Diagonal Sudoku puzzles. Once you pick up this book, you won't be able to put it back down. You have been warned! Anti Diagonal Sudoku 16x16 - Easy to Extreme is a collection of 276 puzzles: 54 easy Anti Diagonal Sudoku 16x16 puzzles 54 medium Anti Diagonal Sudoku 16x16 puzzles 54 hard Anti Diagonal Sudoku 16x16 puzzles 54 extreme Anti Diagonal Sudoku 16x16 puzzles 60 extra logic puzzles The goal of Anti Diagonal Sudoku is to fill in the empty cells, one number in each, so that each column, row, and region contains each number exactly once and each diagonal has at most three different numbers for 9x9 grids and at most four different numbers for 16x16 grids. I guarantee that every logic puzzle in this Anti Diagonal Sudoku puzzle book has been carefully checked to ensure that each puzzle has only 1 solution. None of the puzzles in this book will appear in any of the other PuzzleBooks.net books.

Download or read book Star Sudoku Deluxe Easy to Extreme Volume 7 468 Logic Puzzles written by Nick Snels and published by PuzzleBooks.net. This book was released on 2015-01-11 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: When you buy this book you get an electronic version (PDF file) of the interior of this book. Become a master in solving Star Sudoku. After solving all the puzzles in this book you will be a Star Sudoku Pro. You start with easy Star Sudoku puzzles and you gradually build your way up to extremely difficult Star Sudoku puzzles. Once you pick up this book, you won't be able to put it back down. You have been warned! Star Sudoku Deluxe - Easy to Extreme is a collection of 468 puzzles: 102 easy Star Sudoku puzzles 102 medium Star Sudoku puzzles 102 hard Star Sudoku puzzles 102 extreme Star Sudoku puzzles 60 extra logic puzzles Star Sudoku consists of six large triangles. You must place the numbers 1-9 into the triangular cells of each large triangle. Every line, even an uncontinuous line, contains every number only once. The row on the outer edge of the grid includes the cell on the nearest sharp end of the figure. I guarantee that every logic puzzle in this Star Sudoku puzzle book has been carefully checked to ensure that each puzzle has only 1 solution. None of the puzzles in this book will appear in any of the other English PuzzleBooks.net books.