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Calcudoku 9x9 Medium Volume 9 276 Puzzles
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Book Synopsis CalcuDoku 9x9 - Medium - Volume 9 - 276 Puzzles by : Nick Snels
Download or read book CalcuDoku 9x9 - Medium - Volume 9 - 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 already know how to solve CalcuDoku puzzles but you find our hard CalcuDoku puzzles too difficult. Once you pick up this book, you won't be able to put it back down. You have been warned! CalcuDoku 9x9 - Medium is a collection of 276 puzzles: 216 medium 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 Synopsis CalcuDoku 9x9 - Easy to Hard - Volume 7 - 276 Puzzles by : Nick Snels
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 Synopsis CalcuDoku 9x9 - Easy - Volume 8 - 276 Puzzles by : Nick Snels
Download or read book CalcuDoku 9x9 - Easy - Volume 8 - 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 beginners to learn how to solve CalcuDoku 9x9. Once you pick up this book, you won't be able to put it back down. You have been warned! CalcuDoku 9x9 - Easy is a collection of 276 puzzles: 216 easy 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 Synopsis CalcuDoku 9x9 Large Print - Easy to Hard - Volume 11 - 276 Puzzles by : Nick Snels
Download or read book CalcuDoku 9x9 Large Print - Easy to Hard - Volume 11 - 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 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! Only 1 large print puzzle per page, with lots of white space for scribbling. CalcuDoku 9x9 Large Print - 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 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 Synopsis Futoshiki 9x9 - Medium - Volume 9 - 276 Puzzles by : Nick Snels
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 Synopsis CalcuDoku Mixed Grids - Easy - Volume 2 - 276 Puzzles by : Nick Snels
Download or read book CalcuDoku Mixed Grids - Easy - Volume 2 - 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. 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 beginners to learn how to solve different sizes of 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. Once you pick up this book, you won't be able to put it back down. You have been warned! CalcuDoku Mixed Grids - Easy is a collection of 276 puzzles: 72 easy CalcuDoku 7x7 puzzles 72 easy CalcuDoku 8x8 puzzles 72 easy 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 PuzzleBooks.net books. CalcuDoku is also known as Square Wisdom, CanCan, MinuPlu, Mathdoku and Calcu-Doku.
Book Synopsis CalcuDoku 9x9 - Hard - Volume 10 - 276 Puzzles by : Nick Snels
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 Synopsis CalcuDoku Mixed Grids - Medium - Volume 3 - 276 Puzzles by : Nick Snels
Download or read book CalcuDoku Mixed Grids - Medium - Volume 3 - 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. 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 already know how to solve CalcuDoku puzzles but you find our hard CalcuDoku puzzles too difficult. 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. Once you pick up this book, you won't be able to put it back down. You have been warned! CalcuDoku Mixed Grids - Medium is a collection of 276 puzzles: 72 medium CalcuDoku 7x7 puzzles 72 medium CalcuDoku 8x8 puzzles 72 medium 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 PuzzleBooks.net books. CalcuDoku is also known as Square Wisdom, CanCan, MinuPlu, Mathdoku and Calcu-Doku.
Book Synopsis CalcuDoku Mixed Grids Large Print - Easy to Hard - Volume 5 - 276 Puzzles by : Nick Snels
Download or read book CalcuDoku Mixed Grids Large Print - Easy to Hard - Volume 5 - 276 Puzzles written by Nick Snels and published by PuzzleBooks.net. This book was released on 2014-10-11 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 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! Only 1 large print puzzle per page, with lots of white space for scribbling. CalcuDoku Mixed Grids Large Print - 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.
Book Synopsis CalcuDoku Mixed Grids - Hard - Volume 4 - 276 Puzzles by : Nick Snels
Download or read book CalcuDoku Mixed Grids - Hard - Volume 4 - 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. 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 hard 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 - Hard is a collection of 276 puzzles: 72 hard CalcuDoku 7x7 puzzles 72 hard CalcuDoku 8x8 puzzles 72 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 PuzzleBooks.net books. CalcuDoku is also known as Square Wisdom, CanCan, MinuPlu, Mathdoku and Calcu-Doku.
Book Synopsis CalcuDoku Mixed Grids - Easy to Hard - Volume 1 - 276 Puzzles by : Nick Snels
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.
Book Synopsis Classic Sudoku 9x9 - Medium - Volume 3 - 276 Puzzles by : Nick Snels
Download or read book Classic Sudoku 9x9 - Medium - Volume 3 - 276 Puzzles written by Nick Snels and published by PuzzleBooks.net. This book was released on 2014-09-17 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. You can play the puzzles in this book on your mobile phone! Sudoku is a fun and addicting logic puzzle game that has taken the world by storm. This book is ideal if you already know how to solve Sudoku puzzle, but you find our hard Sudoku puzzle too difficult. 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. Classic Sudoku 9x9 - Medium is a collection of 276 puzzle: 216 medium Sudoku 9x9 puzzle 60 extra logic puzzle The goal of Sudoku is to fill in the empty cells, one number in each, so that each column, row, and region contains each number exactly once. I guarantee that every logic puzzle in this Sudoku puzzle book has been carefully checked to ensure that each puzzle has only 1 solution. None of the puzzle in this book will appear in any of the other English PuzzleBooks.net books. Sudoku is also known as Number Place, Nanpure, Su Doku. Quite often Sudoku is misspelled as Suduko, Soduko, Sodoku, Sudoko, Suduku or Soduku.
Book Synopsis Binary Puzzles 14x14 - Medium - Volume 9 - 276 Puzzles by : Nick Snels
Download or read book Binary Puzzles 14x14 - Medium - Volume 9 - 276 Puzzles written by Nick Snels and published by PuzzleBooks.net. This book was released on 2014-11-23 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. Binary Puzzles are fun and addicting logic puzzle games. The goal seems to be very simple, fill in the grid with the numbers 0 and 1. However, do not be fooled by its simplicity, Binary Puzzles are really challenging logic puzzles and are excellent brain games. This book is ideal for you if you already know how to solve Binary Puzzles but you find our hard Binary Puzzles too difficult. Once you pick up this book, you won't be able to put it back down. You have been warned! Binary Puzzles 14x14 - Medium is a collection of 276 puzzles: 216 medium Binary Puzzles 14x14 60 extra logic puzzles The goal of a Binary Puzzle is to fill in the grid with the numbers 0 and 1 according to the following rules: There are as many ones as zeros in every row and every column (or one more for odd sized grids). No more than two of the same number can be next to or under each other. Each row is unique, and each column is unique. I guarantee that every logic puzzle in this Binary 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. Binary Puzzles are also known as Takuzu, Tohu wa Vohu and Binero.
Book Synopsis Wordoku 9x9 - Extreme - Volume 9 - 276 Logic Puzzles by : Nick Snels
Download or read book Wordoku 9x9 - Extreme - Volume 9 - 276 Logic Puzzles written by Nick Snels and published by PuzzleBooks.net. This book was released on 2014-12-21 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. You can play the puzzles in this book on your mobile phone! Wordoku or Alphabet Sudoku is played in the same way as Sudoku, except it uses letters instead of numbers. This book is ideal if you are a Wordoku expert. In this book, you find the most extreme Wordoku puzzle ever. 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. Wordoku 9x9 - Extreme is a collection of 276 puzzle: 216 extreme Wordoku 9x9 puzzle 60 extra logic puzzle I guarantee that every logic puzzle in this Wordoku puzzle book has been carefully checked to ensure that each puzzle has only 1 solution. None of the puzzle in this book will appear in any of the other English PuzzleBooks.net books. Wordoku is also known as Wordoku, Alphabet Sudoku, Word Sudoku.
Book Synopsis Calcudoku - 200 Easy Puzzles 9x9 by : K Ken
Download or read book Calcudoku - 200 Easy Puzzles 9x9 written by K Ken and published by . This book was released on 2019-11-26 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt: About Book Want to exercise your brainpower and have fun at the same time? Then this book is for you. This book introduces you to the amazing world of Calcudoku puzzles. It will help you understand the rules of this puzzle. This book is perfect for players of all skill levels and ages. You will find 200 exciting puzzles, both for beginners and for professionals. HOW TO PLAY The objective is to fill the grid in with the digits 1 through 9 (where 9 is the number of rows or columns in the grid) such that: Each column contains exactly one of each digit. Each bold-outlined group of cells (block) contains digits which achieve the specified result using the specified mathematical operation: addition (+), subtraction (-), multiplication (?), and division (?). No single number can repeat in any row or column. As Calcudoku belongs to the same class of puzzles as Sudoku the puzzle can demonstrate a wide spectrum of relative difficulty. The grade is determined by a combination of opportunities to solve at each stage and the difficulty of the strategy that grants each solution. Puzzles almost like Killer Sudoku, but unlike Killer Sudoku, digits may repeat within a block.
Book Synopsis CalcuDoku 9x9 Deluxe - Easy to Hard - Volume 12 - 468 Puzzles by : Nick Snels
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.
Book Synopsis Calcudoku - 200 Easy to Normal Puzzles 9x9 by : K Ken
Download or read book Calcudoku - 200 Easy to Normal Puzzles 9x9 written by K Ken and published by . This book was released on 2019-11-28 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt: About Book Want to exercise your brainpower and have fun at the same time? Then this book is for you. This book introduces you to the amazing world of Calcudoku puzzles. It will help you understand the rules of this puzzle. This book is perfect for players of all skill levels and ages. You will find 200 exciting puzzles, both for beginners and for professionals. HOW TO PLAY The objective is to fill the grid in with the digits 1 through 9 (where 9 is the number of rows or columns in the grid) such that: Each column contains exactly one of each digit. Each bold-outlined group of cells (block) contains digits which achieve the specified result using the specified mathematical operation: addition (+), subtraction (-), multiplication (?), and division (?). No single number can repeat in any row or column. As Calcudoku belongs to the same class of puzzles as Sudoku the puzzle can demonstrate a wide spectrum of relative difficulty. The grade is determined by a combination of opportunities to solve at each stage and the difficulty of the strategy that grants each solution. Puzzles almost like Killer Sudoku, but unlike Killer Sudoku, digits may repeat within a block.
