Bøger af John Collins

Binary puzzle (also known as "Binairo", "Takuzu", "Tohu wa Vohu") is a logic puzzle that you can solve by using only zeros and ones. The rectangular or square grid should fill the numbers in accordance with the following rules: - Each row and each column contain the same number of digits "1" as digits "0" (or one more for odd sized grids). - The same number can only be in no more than two cells in a row. - Each line must be unique, and each column must be unique. In the book you will find a description and examples of solutions for all puzzles.The book is for those who like logic and math problems. Decide, developing and improving.

Killer Sudoku (also called Sums Sudoku, Sums Number Place, Samunamupure, Kikagaku Nampure) is a puzzle that combines elements of Sudoku and Kakuro.Despite the name, the simpler killer sudokus can be easier to solve than regular sudokus, depending on the solver's skill at mental arithmetic, the hardest ones, however, can take hours to crack.In Killer Sudoku, sub-regions have specified sums, and no number can be repeated within a region.

Suguru (also known as "Number Blocks") is a logic puzzle that has simple rules, but which provides sufficient challenges to satisfy the most enthusiastic solvers!The task consists of a rectangular or square grid divided into regions.Each region must be filled with each of the digits from 1 to the number of cells in the region.Cells with the same digits must not be orthogonally or diagonally adjacent.Even though the rules are simple, you will need all your skills to solve it.

Suguru (also known as "Number Blocks") is a logic puzzle that has simple rules, but which provides sufficient challenges to satisfy the most enthusiastic solvers!The task consists of a rectangular or square grid divided into regions.Each region must be filled with each of the digits from 1 to the number of cells in the region.Cells with the same digits must not be orthogonally or diagonally adjacent.Even though the rules are simple, you will need all your skills to solve it.

Killer Sudoku (also called Sums Sudoku, Sums Number Place, Samunamupure, Kikagaku Nampure) is a puzzle that combines elements of Sudoku and Kakuro.Despite the name, the simpler killer sudokus can be easier to solve than regular sudokus, depending on the solver's skill at mental arithmetic, the hardest ones, however, can take hours to crack.In Killer Sudoku, sub-regions have specified sums, and no number can be repeated within a region.

Diagonal Sudoku also called Sudoku X.The puzzle is a 10x10 grid made up of 5x2 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, region and diagonal contains the numbers 1 through 10 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.

Straights is a logic puzzle.It is a grid, partially divided by black cells into compartments.Each compartment, vertically or horizontally, must contain a straight - a set of consecutive numbers, but in any order (for example: 2-1-3-4).The aim is to fill all white cells with the numbers from 1 to N (where N is the size of the grid).No single number can repeat in any row or column.Clues in black cells remove that number as an option in that row and column, and are not part of any straight.

Sudoku Jigsaw (also known as "Irregular", "Nonomino" or "Geometric Sudoku") is a logic-based, combinatorial number-placement puzzle.Jigsaw Sudokus are very similar to regular Sudoku puzzles. Regular 8x8 Sudoku that row and column rules apply, but instead of a 4x2 grid they are nime Jigsaw shapes.Each row, column and jigsaw shape contains all of the digits 1 through 8. In all other respects the puzzle works in the same way, but this change in the region shapes introduces new twists into the logic required to solve the puzzle - and often makes it much harder for you to find the next move as a result!Every Jigsaw Sudoku puzzle only ever has one possible solution, and it can always be reached via reasonable logical deduction. In other words, guessing is never required.

Sudoku Jigsaw (also known as "Irregular", "Nonomino" or "Geometric Sudoku") is a logic-based, combinatorial number-placement puzzle.Jigsaw Sudokus are very similar to regular Sudoku puzzles. Regular 12x12 Sudoku that row and column rules apply, but instead of a 6x2 grid they are nime Jigsaw shapes.Each row, column and jigsaw shape contains all of the digits 1 through 12. In all other respects the puzzle works in the same way, but this change in the region shapes introduces new twists into the logic required to solve the puzzle - and often makes it much harder for you to find the next move as a result!Every Jigsaw Sudoku puzzle only ever has one possible solution, and it can always be reached via reasonable logical deduction. In other words, guessing is never required.

Killer Sudoku (also called Sums Sudoku, Sums Number Place, Samunamupure, Kikagaku Nampure) is a puzzle that combines elements of Sudoku and Kakuro.Despite the name, the simpler killer sudokus can be easier to solve than regular sudokus, depending on the solver's skill at mental arithmetic, the hardest ones, however, can take hours to crack.In Killer Sudoku, sub-regions have specified sums, and no number can be repeated within a region.

The Case of the Sugar Colonies, written by John Collins in 1792, is a historical book that explores the economic and political implications of the British sugar trade in the Caribbean colonies during the late 18th century. Collins argues that the British government's policies towards the sugar colonies were detrimental to the economic growth of the colonies and contributed to the exploitation of enslaved Africans who were forced to work on sugar plantations. The book provides a detailed analysis of the sugar trade, including the production process, the role of merchants, and the impact of taxes and regulations. Collins also examines the political and social conditions of the sugar colonies, including the power dynamics between the colonizers and the colonized, the role of slavery in the economy, and the resistance of enslaved Africans. The Case of the Sugar Colonies is a significant historical document that sheds light on the complex issues surrounding British imperialism and the slave trade in the Caribbean.This scarce antiquarian book is a facsimile reprint of the old original and may contain some imperfections such as library marks and notations. Because we believe this work is culturally important, we have made it available as part of our commitment for protecting, preserving, and promoting the world's literature in affordable, high quality, modern editions, that are true to their original work.

Killer Sudoku (also called Sums Sudoku, Sums Number Place, Samunamupure, Kikagaku Nampure) is a puzzle that combines elements of Sudoku and Kakuro.Despite the name, the simpler killer sudokus can be easier to solve than regular sudokus, depending on the solver's skill at mental arithmetic, the hardest ones, however, can take hours to crack.In Killer Sudoku, sub-regions have specified sums, and no number can be repeated within a region.

Suguru (also known as "Number Blocks") is a logic puzzle that has simple rules, but which provides sufficient challenges to satisfy the most enthusiastic solvers!The task consists of a rectangular or square grid divided into regions.Each region must be filled with each of the digits from 1 to the number of cells in the region.Cells with the same digits must not be orthogonally or diagonally adjacent.Even though the rules are simple, you will need all your skills to solve it.

Killer Sudoku (also called Sums Sudoku, Sums Number Place, Samunamupure, Kikagaku Nampure) is a puzzle that combines elements of Sudoku and Kakuro.Despite the name, the simpler killer sudokus can be easier to solve than regular sudokus, depending on the solver's skill at mental arithmetic, the hardest ones, however, can take hours to crack.In Killer Sudoku, sub-regions have specified sums, and no number can be repeated within a region.

Binary puzzle (also known as "Binairo", "Takuzu", "Tohu wa Vohu") is a logic puzzle that you can solve by using only zeros and ones. The rectangular or square grid should fill the numbers in accordance with the following rules: - Each row and each column contain the same number of digits "1" as digits "0" (or one more for odd sized grids). - The same number can only be in no more than two cells in a row. - Each line must be unique, and each column must be unique. In the book you will find a description and examples of solutions for all puzzles.The book is for those who like logic and math problems. Decide, developing and improving.

Sudoku Jigsaw (also known as "Irregular", "Nonomino" or "Geometric Sudoku") is a logic-based, combinatorial number-placement puzzle.Jigsaw Sudokus are very similar to regular Sudoku puzzles. Regular 9x9 Sudoku that row and column rules apply, but instead of a 3x3 grid they are nime Jigsaw shapes.Each row, column and jigsaw shape contains all of the digits 1 through 9. In all other respects the puzzle works in the same way, but this change in the region shapes introduces new twists into the logic required to solve the puzzle - and often makes it much harder for you to find the next move as a result!Every Jigsaw Sudoku puzzle only ever has one possible solution, and it can always be reached via reasonable logical deduction. In other words, guessing is never required.

Sudoku X also called Diagonal Sudoku.The puzzle is a 8x8 grid made up of 4x2 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, region and diagonal contains the numbers 1 through 8 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.

Binary puzzle (also known as "Binairo", "Takuzu", "Tohu wa Vohu") is a logic puzzle that you can solve by using only zeros and ones. The rectangular or square grid should fill the numbers in accordance with the following rules: - Each row and each column contain the same number of digits "1" as digits "0" (or one more for odd sized grids). - The same number can only be in no more than two cells in a row. - Each line must be unique, and each column must be unique. In the book you will find a description and examples of solutions for all puzzles.The book is for those who like logic and math problems. Decide, developing and improving.

Straights is a logic puzzle.It is a grid, partially divided by black cells into compartments.Each compartment, vertically or horizontally, must contain a straight - a set of consecutive numbers, but in any order (for example: 2-1-3-4).The aim is to fill all white cells with the numbers from 1 to N (where N is the size of the grid).No single number can repeat in any row or column.Clues in black cells remove that number as an option in that row and column, and are not part of any straight.

Suguru (also known as "Number Blocks") is a logic puzzle that has simple rules, but which provides sufficient challenges to satisfy the most enthusiastic solvers!The task consists of a rectangular or square grid divided into regions.Each region must be filled with each of the digits from 1 to the number of cells in the region.Cells with the same digits must not be orthogonally or diagonally adjacent.Even though the rules are simple, you will need all your skills to solve it.

Suguru (also known as "Number Blocks") is a logic puzzle that has simple rules, but which provides sufficient challenges to satisfy the most enthusiastic solvers!The task consists of a rectangular or square grid divided into regions.Each region must be filled with each of the digits from 1 to the number of cells in the region.Cells with the same digits must not be orthogonally or diagonally adjacent.Even though the rules are simple, you will need all your skills to solve it.

Numbricks - kind of logic puzzle. It is a rectangular grid in which some cells are numbers. Required to fill the empty cells so that all the numbers have been connected in series horizontally or vertically. Moving diagonally is not allowed.

Binary puzzle (also known as "Binairo", "Takuzu", "Tohu wa Vohu") is a logic puzzle that you can solve by using only zeros and ones. The rectangular or square grid should fill the numbers in accordance with the following rules: - Each row and each column contain the same number of digits "1" as digits "0" (or one more for odd sized grids). - The same number can only be in no more than two cells in a row. - Each line must be unique, and each column must be unique. In the book you will find a description and examples of solutions for all puzzles.The book is for those who like logic and math problems. Decide, developing and improving.

Diagonal Sudoku also called Sudoku X.The puzzle is a 12x12 grid made up of 4x3 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, region and diagonal contains the numbers 1 through 12 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.

Sudoku Jigsaw (also known as "Irregular", "Nonomino" or "Geometric Sudoku") is a logic-based, combinatorial number-placement puzzle.Jigsaw Sudokus are very similar to regular Sudoku puzzles. Regular 6x6 Sudoku that row and column rules apply, but instead of a 3x2 grid they are nime Jigsaw shapes.Each row, column and jigsaw shape contains all of the digits 1 through 6. In all other respects the puzzle works in the same way, but this change in the region shapes introduces new twists into the logic required to solve the puzzle - and often makes it much harder for you to find the next move as a result!Every Jigsaw Sudoku puzzle only ever has one possible solution, and it can always be reached via reasonable logical deduction. In other words, guessing is never required.

Straights is a logic puzzle.It is a grid, partially divided by black cells into compartments.Each compartment, vertically or horizontally, must contain a straight - a set of consecutive numbers, but in any order (for example: 2-1-3-4).The aim is to fill all white cells with the numbers from 1 to N (where N is the size of the grid).No single number can repeat in any row or column.Clues in black cells remove that number as an option in that row and column, and are not part of any straight.

Sudoku Jigsaw (also known as "Irregular", "Nonomino" or "Geometric Sudoku") is a logic-based, combinatorial number-placement puzzle.Jigsaw Sudokus are very similar to regular Sudoku puzzles. Regular 8x8 Sudoku that row and column rules apply, but instead of a 4x2 grid they are nime Jigsaw shapes.Each row, column and jigsaw shape contains all of the digits 1 through 8. In all other respects the puzzle works in the same way, but this change in the region shapes introduces new twists into the logic required to solve the puzzle - and often makes it much harder for you to find the next move as a result!Every Jigsaw Sudoku puzzle only ever has one possible solution, and it can always be reached via reasonable logical deduction. In other words, guessing is never required.

Killer Sudoku (also called Sums Sudoku, Sums Number Place, Samunamupure, Kikagaku Nampure) is a puzzle that combines elements of Sudoku and Kakuro.Despite the name, the simpler killer sudokus can be easier to solve than regular sudokus, depending on the solver's skill at mental arithmetic, the hardest ones, however, can take hours to crack.In Killer Sudoku, sub-regions have specified sums, and no number can be repeated within a region.

Straights is a logic puzzle.It is a grid, partially divided by black cells into compartments.Each compartment, vertically or horizontally, must contain a straight - a set of consecutive numbers, but in any order (for example: 2-1-3-4).The aim is to fill all white cells with the numbers from 1 to N (where N is the size of the grid).No single number can repeat in any row or column.Clues in black cells remove that number as an option in that row and column, and are not part of any straight.

Numbricks - kind of logic puzzle. It is a rectangular grid in which some cells are numbers. Required to fill the empty cells so that all the numbers have been connected in series horizontally or vertically. Moving diagonally is not allowed.