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Book Anti Knight Sudoku 9x9   Easy to Extreme   Volume 1   276 Puzzles

Download or read book Anti Knight Sudoku 9x9 Easy to Extreme Volume 1 276 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 9x9. 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 9x9 - Easy to Extreme is a collection of 276 puzzles: 54 easy Anti-Knight Sudoku 9x9 puzzles 54 medium Anti-Knight Sudoku 9x9 puzzles 54 hard Anti-Knight Sudoku 9x9 puzzles 54 extreme Anti-Knight Sudoku 9x9 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 9x9 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.

Book Anti Knight Sudoku 15x15   Easy to Extreme   Volume 4   276 Puzzles

Download or read book Anti Knight Sudoku 15x15 Easy to Extreme Volume 4 276 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 15x15. 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 15x15 - Easy to Extreme is a collection of 276 puzzles: 54 easy Anti-Knight Sudoku 15x15 puzzles 54 medium Anti-Knight Sudoku 15x15 puzzles 54 hard Anti-Knight Sudoku 15x15 puzzles 54 extreme Anti-Knight Sudoku 15x15 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 15x15 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.

Book Anti Knight Sudoku 12x12   Easy to Extreme   Volume 3   276 Puzzles

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.

Book Anti Knight Sudoku 10x10   Easy to Extreme   Volume 2   276 Puzzles

Download or read book Anti Knight Sudoku 10x10 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-Knight Sudoku 10x10. 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 10x10 - Easy to Extreme is a collection of 276 puzzles: 54 easy Anti-Knight Sudoku 10x10 puzzles 54 medium Anti-Knight Sudoku 10x10 puzzles 54 hard Anti-Knight Sudoku 10x10 puzzles 54 extreme Anti-Knight Sudoku 10x10 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 10x10 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 10x10 is also known as No Knight Step Sudoku.

Book Anti Knight Sudoku 16x16   Easy to Extreme   Volume 5   276 Puzzles

Download or read book Anti Knight Sudoku 16x16 Easy to Extreme Volume 5 276 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 16x16. 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 16x16 - Easy to Extreme is a collection of 276 puzzles: 54 easy Anti-Knight Sudoku 16x16 puzzles 54 medium Anti-Knight Sudoku 16x16 puzzles 54 hard Anti-Knight Sudoku 16x16 puzzles 54 extreme Anti-Knight Sudoku 16x16 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 16x16 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.

Book Hitori Mixed Grids Deluxe   Volume 2   255 Logic Puzzles

Download or read book Hitori Mixed Grids Deluxe Volume 2 255 Logic Puzzles written by Nick Snels and published by PuzzleBooks.net. This book was released on 2014-12-21 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 Hitori. You will experience Hitori 21x21, Hitori 24x24, Hitori 27x27 and Hitori 30x30. You get the perfect mix of different sizes of Hitori to keep you entertained for weeks. After solving all the puzzles in this book, you will be a Hitori Pro. You start with small Hitori puzzles, which keep getting bigger and bigger and you gradually build your way up to the colossal Hitori 30x30 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. Hitori Mixed Grids Deluxe is a collection of 255 puzzles: 54 Hitori 21x21 puzzles 54 Hitori 24x24 puzzles 54 Hitori 27x27 puzzles 54 Hitori 30x30 puzzles 39 extra logic puzzles The goal of Hitori is to paint out some cells so that there are no duplicate numbers in any row or column. You can only connect black cells diagonally and you must connect all the white cells horizontally or vertically in a single group. I guarantee that every logic puzzle in this Hitori puzzle book has been carefully checked to ensure that each puzzle has only 1 solution.

Book Killer Sudoku 9x9 Large Print   Hard   Volume 27   270 Logic Puzzles

Download or read book Killer Sudoku 9x9 Large Print Hard Volume 27 270 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. Killer Sudoku is a fun and addicting logic puzzle game that combines Sudoku with an addition math game. Killer Sudoku is a fun way for kids and adults to practice addition facts. In this book, you do not need to wade through tons of easy Killer Sudoku puzzles before getting to the real brain teasers. Once you pick up this book, you won't be able to put it back down. You have been warned! Only 1 Killer Sudoku puzzle per page, with lots of white space for scribbling. Killer Sudoku 9x9 Large Print - Hard is a collection of 270 puzzles: 216 hard Killer Sudoku 9x9 puzzles 54 extra logic 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. 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.

Book Anti King Sudoku 12x12   Easy to Extreme   Volume 3   276 Puzzles

Download or read book Anti King 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-King Sudoku 12x12. After solving all the puzzles in this book, you will be a Anti-King Sudoku Pro. You start with easy Anti-King Sudoku puzzles and you gradually build your way up to extremely difficult Anti-King Sudoku puzzles. Once you pick up this book, you won't be able to put it back down. You have been warned! Anti-King Sudoku 12x12 - Easy to Extreme is a collection of 276 puzzles: 54 easy Anti-King Sudoku 12x12 puzzles 54 medium Anti-King Sudoku 12x12 puzzles 54 hard Anti-King Sudoku 12x12 puzzles 54 extreme Anti-King Sudoku 12x12 puzzles 60 extra logic puzzles The goal of Anti-King 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 equal numbers can be neither orthogonally nor diagonally adjacent. I guarantee that every logic puzzle in this Anti-King 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. Anti-King Sudoku is also known as Touchless Sudoku.

Book Futoshiki 9x9   Medium   Volume 9   276 Puzzles

Download or read book Futoshiki 9x9 Medium Volume 9 276 Puzzles written by Nick Snels and published by PuzzleBooks.net. This book was released on 2014-11-21 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. Futoshiki is a fun and addicting logic puzzle game that combines Sudoku with inequality constraints. This book is ideal for you if you already know how to solve Futoshiki 9x9 puzzles but you find our hard Futoshiki puzzles too difficult. Once you pick up this book, you won't be able to put it back down. You have been warned! Futoshiki 9x9 - Medium is a collection of 276 puzzles: 216 medium Futoshiki 9x9 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 English PuzzleBooks.net books. Futoshiki is also known as Hutoshiki and Unequal.

Book CalcuDoku 9x9   Hard   Volume 10   276 Puzzles

Download or read book CalcuDoku 9x9 Hard Volume 10 276 Puzzles written by Nick Snels and published by PuzzleBooks.net. This book was released on 2014-11-22 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. 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 9x9 puzzles. You do not need to wade through tons of easy CalcuDoku puzzles before getting to the real brain teasers. Once you pick up this book, you won't be able to put it back down. You have been warned! CalcuDoku 9x9 - Hard is a collection of 276 puzzles: 216 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.

Book Numbricks Mixed Grids Large Print   Hard   Volume 10   276 Logic Puzzles

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.

Book Huge Hashi 30x30 Deluxe   Volume 4   255 Logic Puzzles

Download or read book Huge Hashi 30x30 Deluxe Volume 4 255 Logic Puzzles written by Nick Snels and published by PuzzleBooks.net. This book was released on 2014-12-21 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. Huge Hashi Deluxe bundles the biggest and baddest Hashi 30x30 puzzles ever. Your brain will work overtime on these colossal logic puzzles. The goal of Hashi is to connect all of the encircled numbers (islands) into one single connected group by drawing lines (bridges) between the islands. Once you pick up this book, you won't be able to put it back down. You have been warned! Only 1 Hashi puzzle per page, with lots of white space for scribbling. Huge Hashi 30x30 Deluxe is a collection of 255 puzzles: 216 Hashi 30x30 puzzles 39 extra logic puzzles I guarantee that every logic puzzle in this Hashi 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. Hashi is also known as Hashiwokakero, Bridges, Chopsticks and Ai-Ki-Ai.

Book Futoshiki 9x9   Easy to Hard   Volume 7   276 Puzzles

Download or read book Futoshiki 9x9 Easy to Hard Volume 7 276 Puzzles written by Nick Snels and published by PuzzleBooks.net. This book was released on 2014-11-21 with total page 181 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 9x9. After solving all the puzzles in this book, you will be a Futoshiki Pro. You start with easy Futoshiki puzzles 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 9x9 - Easy to Hard is a collection of 276 puzzles: 72 easy Futoshiki 9x9 puzzles 72 medium Futoshiki 9x9 puzzles 72 hard Futoshiki 9x9 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 English PuzzleBooks.net books. Futoshiki is also known as Hutoshiki and Unequal.

Book CalcuDoku 9x9   Easy to Hard   Volume 7   276 Puzzles

Download or read book CalcuDoku 9x9 Easy to Hard Volume 7 276 Puzzles written by Nick Snels and published by PuzzleBooks.net. This book was released on 2014-11-22 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 9x9. After solving all the puzzles in this book, you will be a CalcuDoku Pro. You start with easy CalcuDoku puzzles and you gradually build your way up to extremely difficult CalcuDoku puzzles. Once you pick up this book, you won't be able to put it back down. You have been warned! CalcuDoku 9x9 - Easy to Hard is a collection of 276 puzzles: 72 easy CalcuDoku 9x9 puzzles 72 medium CalcuDoku 9x9 puzzles 72 hard CalcuDoku 9x9 puzzles 60 extra logic puzzles The goal of CalcuDoku 9x9 is to fill the grid in with the numbers 1-9 such that: Each row contains exactly one of each number. Each column contains exactly one of each number. Each bold-outlined group of cells (cages) contains numbers which achieve the specified result using the specified mathematical operation (+, -, ×, ÷). Sometimes the sign +, -, × or ÷ is omitted, in which case you also need to find the correct sign. Numbers may repeat within a cage. 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.

Book Numbricks 15x15   Easy to Hard   Volume 11   276 Logic Puzzles

Download or read book Numbricks 15x15 Easy to Hard Volume 11 276 Logic Puzzles written by Nick Snels and published by PuzzleBooks.net. This book was released on 2014-12-20 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 Numbricks 15x15. After solving all the puzzles in this book, you will be a Numbricks Pro. You start with easy Numbricks 15x15 puzzles, which keep getting bigger and bigger and you gradually build your way up to extremely difficult Numbricks puzzles. Once you pick up this book, you won't be able to put it back down. You have been warned! Numbricks 15x15 - Easy to Hard is a collection of 276 puzzles: 72 hard Numbricks 15x15 puzzles 72 hard Numbricks 15x15 puzzles 72 hard 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.

Book CalcuDoku Mixed Grids Deluxe   Hard   Volume 14   468 Logic Puzzles

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.

Book CalcuDoku 9x9 Deluxe   Easy to Hard   Volume 12   468 Puzzles

Download or read book CalcuDoku 9x9 Deluxe Easy to Hard Volume 12 468 Puzzles written by Nick Snels and published by PuzzleBooks.net. This book was released on 2014-11-22 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 CalcuDoku 9x9. After solving all the puzzles in this book, you will be a CalcuDoku Pro. You start with easy CalcuDoku puzzles and you gradually build your way up to extremely difficult CalcuDoku puzzles. Once you pick up this book, you won't be able to put it back down. You have been warned! CalcuDoku 9x9 Deluxe - Easy to Hard is a collection of 468 puzzles: 136 easy CalcuDoku 9x9 puzzles 136 medium CalcuDoku 9x9 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.