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Yajilin (also known as "Arrow Ring", "Straight and Arrow") is a type of logic puzzle published by Nikoli. The goal is to draw a single continuous non-intersecting loop that connects the centers of the grid cells. The loop may not pass through any cells which contain arrows. The loop may only travel horizontally or vertically, and never diagonally. Any cell that does not have an arrow and which is not part of the loop must be shaded in black. Black cells do not touch each other orthogonally (they do not share a side). A cell containing a number and an arrow represents how many black cells are in the row or column pointed at by the arrow. There may be black cells that are not accounted for by the cells with arrows and numbers.

Numerical logic puzzles are puzzles that use the numbers and the set of rules to deal with them.In this book you can find Classic Sudoku, Killer Sudoku, Sudoku Greater Than and Sudoku Consecutive.With a great variety of number Puzzles this series is ideal for brain training and keeping your mind active.The number of puzzles in the book is 400 puzzles. This book contains master puzzle. The variety puzzle books for adult's series contain: - 100 Classic Sudoku- 100 Killer Sudoku- 100 Sudoku Greater Than- 100 Sudoku Consecutive- Handy 6 x 9 inch Book Layout- 2 Puzzles per Page- Ideal for Experts In the book you will find a description and examples of solutions for each type of logical puzzles and solve all puzzles.The book is for those who like logic and math problems. Decide, developing and improving.

Masyu is a type of logic. The purpose of its creation was to present a puzzle that uses no numbers or letters and yet retains depth and aesthetics. Masyu is played on a rectangular grid of squares, some of which contain circles, each circle is either "white" (empty) or "black" (filled). The goal is to draw a single continuous non-intersecting loop that properly passes through all circled cells. The loop must "enter" each cell it passes through from the center of one of its four sides and "exit" from a different side, all turns are therefore 90 degrees. The two varieties of circle have differing requirements for how the loop must pass through them: - White circles must be traveled straight through, but the loop must turn in the previous and/or next cell in its path. - Black circles must be turned upon, but the loop must travel straight through the next and previous cells in its path.

Kakuro (auch als "Cross Sums" und "Kakro" bekannt) ist ein logisches Rätsel, ein mathematisches Äquivalent der Kreuzworträtsel. Das Rätsel besteht aus einem Spielbereich von gefüllten und leeren Zellen ähnlich zu einem Kreuzworträtsel. Einige schwarze Zellen enthalten einen diagonalen Schrägstrich von oben links nach unten rechts mit Ziffern darin, die "Hinweise" genannt. Eine Ziffer in der oberen rechten Ecke bezieht sich auf einen "waagerecht" Hinweis und eine in der unteren linken einen "senkrecht" Hinweis. Das Ziel von Kakuro ist, Ziffern von 1 bis 9 in die weißen Zellen einzufügen, um den Hinweis darauf zu summieren. In einem Eintrag kann jedoch keine Ziffer dupliziert werden. Zum Beispiel die Summe von 6 könnten Sie durch 1 und 5, 2 und 4 aber nicht 3 und 3 bekommen. Das Rätselbuch enthält: - 500 Logik Rätsel- Händelbares 6 X 9 Buchformat- 6 Rätsel pro Seite - Optimal für Anfänger und Experten In dem Buch finden Sie eine Beschreibung und Beispiele der Lösungen für alle Rätsel. Das Buch ist für alle, die Logik und mathematische Probleme mögen. Lösen, entwickeln und verbessern.

Tents (also known as "Tents and Trees") is a logic puzzle. The task is a grid of squares, some of them contain trees. The goal is to place tents in some of the remaining squares, in such a way that the following conditions are met: There are exactly as many tents as trees. The tents and trees can be matched up in such a way that each tent is directly adjacent (horizontally or vertically, but not diagonally) to its own tree. However, a tent may be adjacent to other trees as well as its own. No two tents are adjacent horizontally, vertically or diagonally. The number of tents in each row, and in each column, matches the numbers given round the sides of the grid.

Galaxies (also known as "Tentai Show") consists of a rectangular grid with dots. The goal is to divide the rectangle into exactly one region per dot that is two-fold rotationally symmetric around the dot.

Kakuro (auch als "Cross Sums" und "Kakro" bekannt) ist ein logisches Rätsel, ein mathematisches Äquivalent der Kreuzworträtsel. Das Rätsel besteht aus einem Spielbereich von gefüllten und leeren Zellen ähnlich zu einem Kreuzworträtsel. Einige schwarze Zellen enthalten einen diagonalen Schrägstrich von oben links nach unten rechts mit Ziffern darin, die "Hinweise" genannt. Eine Ziffer in der oberen rechten Ecke bezieht sich auf einen "waagerecht" Hinweis und eine in der unteren linken einen "senkrecht" Hinweis. Das Ziel von Kakuro ist, Ziffern von 1 bis 9 in die weißen Zellen einzufügen, um den Hinweis darauf zu summieren. In einem Eintrag kann jedoch keine Ziffer dupliziert werden. Zum Beispiel die Summe von 6 könnten Sie durch 1 und 5, 2 und 4 aber nicht 3 und 3 bekommen. Das Rätselbuch enthält: - 500 Logik Rätsel- Händelbares 6 X 9 Buchformat- 6 Rätsel pro Seite - Optimal für Anfänger und Experten In dem Buch finden Sie eine Beschreibung und Beispiele der Lösungen für alle Rätsel. Das Buch ist für alle, die Logik und mathematische Probleme mögen. Lösen, entwickeln und verbessern.

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 six 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. The puzzle book contain: - 200 Puzzles- Handy 6 x 9 inch Book Layout- 2 Puzzles per Page- Ideal for Beginners 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.

Futoshiki (from Japanese, literally "not equal"; also known as "Hutoshiki", "Unequal") is a logic puzzle. The puzzle is played on a square grid, such as 9 x 9. The objective is to place the numbers 1 to 9 (or whatever the dimensions are) such that each row, and column contains each of the digits 1 to 9. Some digits may be given at the start. In addition, inequality constraints are also initially specified between some of the squares, such that one must be higher or lower than its neighbour. These constraints must be honoured as the grid is filled out. The puzzle book contain: - 200 Puzzles- Handy 6 x 9 inch Book Layout- 2 Puzzles per Page- Ideal for Beginners 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.

Yajilin (also known as "Arrow Ring", "Straight and Arrow") is a type of logic puzzle published by Nikoli. The goal is to draw a single continuous non-intersecting loop that connects the centers of the grid cells. The loop may not pass through any cells which contain arrows. The loop may only travel horizontally or vertically, and never diagonally. Any cell that does not have an arrow and which is not part of the loop must be shaded in black. Black cells do not touch each other orthogonally (they do not share a side). A cell containing a number and an arrow represents how many black cells are in the row or column pointed at by the arrow. There may be black cells that are not accounted for by the cells with arrows and numbers.

Hidoku (from Hebrew: "my puzzle") is a logical puzzle.The goal of Hidoku is to fill the grid with consecutive numbers that connect horizontally, vertically, or diagonally. In every Hidoku puzzle the smallest and the highest number are presented in the grid. There are more numbers on the board to help to direct the player how to start the solution and to ensure that Hidoku has only a single solution. Hidoku puzzles are similar to Numbrix. The most important difference is that diagonal moves are allowed. The puzzle book contain: - 200 Puzzles- Handy 6 x 9 inch Book Layout- 2 Puzzles per Page- Ideal for Experts 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.

The Battleship puzzle (sometimes called Bimaru, Yubotu, Solitaire Battleships or Battleship Solitaire) is a logic puzzle based on the Battleship guessing game. Each ship occupies a number of contiguous squares on the grid, arranged horizontally or vertically. The boats are placed so that no boat touches any other boat, not even diagonally. Numbers alongside the grid indicate how many squares in a row or column are occupied by part of a ship.In Battleship, an armada of battleships is hidden in a square grid of 11x11 small squares. The armada includes 2 battleship five squares long, 2 battleship four squares long, 3 cruisers three squares long, 4 destroyers two squares long, and 5 submarines one square in size. Sometimes, some of the fragments of the ships are already open as a hint. The puzzle book contain: - 200 Puzzles- Handy 6 x 9 inch Book Layout- 2 Puzzles per Page- Ideal for both Beginners and Experts 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.

No Four in a Row is played on a grid of irregular shape. Some cells of the grid contain 'X' and 'O'. The task is to fill in the grid so that four consecutive identical symbols never appear in any row, column or diagonal. The puzzle book contain: - 200 Puzzles- Handy 6 x 9 inch Book Layout- 2 Puzzles per Page- Ideal for Experts 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.

Masyu is a type of logic. The purpose of its creation was to present a puzzle that uses no numbers or letters and yet retains depth and aesthetics. Masyu is played on a rectangular grid of squares, some of which contain circles, each circle is either "white" (empty) or "black" (filled). The goal is to draw a single continuous non-intersecting loop that properly passes through all circled cells. The loop must "enter" each cell it passes through from the center of one of its four sides and "exit" from a different side, all turns are therefore 90 degrees. The two varieties of circle have differing requirements for how the loop must pass through them: - White circles must be traveled straight through, but the loop must turn in the previous and/or next cell in its path. - Black circles must be turned upon, but the loop must travel straight through the next and previous cells in its path.

Mathrax consists of a square grid. The goal is to fill in each cell with numbers from 1 to N, where N is the size of the puzzle's side. No number may appear twice in any row or column. Circles with additional conditions may be situated on intersections of lines inside the grid.- A number and a sign of mathematical operation (addition, subtraction, multiplication, division) - a number is a result of an operation execution with numbers in diagonally adjacent cells.- A letter "E" ("even") - all numbers in four cells are even.- A letter "O" ("odd") - all numbers in four cells are odd. The puzzle book contain: - 200 Puzzles- Handy 6 x 9 inch Book Layout- 2 Puzzles per Page- Ideal for Beginners 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.

The binary puzzle (also known as "Binairo", "Takuzu", "Tohu wa Vohu") is a new 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. The puzzle book contain: - 200 Puzzles- Handy 6 x 9 inch Book Layout- 2 Puzzles per Page- Ideal for both Beginners and Experts 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.

Fillomino (also known as "Polyominous") is a type of logic puzzle. It is played on a rectangular grid of squares. Some cells of the grid start containing numbers, referred to as "givens". The goal is to divide the grid into blocks. The block must contain the number of cells indicated by the number in the cells of the block. The block cannot touch a similarly sized block, horizontally or vertically. Cells without numbers may form blocks necessary to complete the puzzle.

Slitherlink (also known as "Fences", "Loop the Loop", "Dotty Dilemma", "Sli-Lin", "Great Wall of China") is a logic puzzle. Slitherlink is played on a rectangular lattice of dots.Some of the squares formed by the dots have numbers inside them.The objective is to connect horizontally and vertically adjacent dots so that the lines form a 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. The puzzle book contain: - 200 Puzzles- Handy 6 x 9 inch Book Layout- 2 Puzzles per Page- Ideal for Experts 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 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. The puzzle book contain: - 200 Puzzles- Handy 6 x 9 inch Book Layout- 2 Puzzles per Page- Ideal for Experts 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.

Yajilin (also known as "Arrow Ring", "Straight and Arrow") is a type of logic puzzle published by Nikoli. The goal is to draw a single continuous non-intersecting loop that connects the centers of the grid cells. The loop may not pass through any cells which contain arrows. The loop may only travel horizontally or vertically, and never diagonally. Any cell that does not have an arrow and which is not part of the loop must be shaded in black. Black cells do not touch each other orthogonally (they do not share a side). A cell containing a number and an arrow represents how many black cells are in the row or column pointed at by the arrow. There may be black cells that are not accounted for by the cells with arrows and numbers.

Hidoku (from Hebrew: "my puzzle") is a logical puzzle. The goal of Hidoku is to fill the grid with consecutive numbers that connect horizontally, vertically, or diagonally.In every Hidoku puzzle the smallest and the highest number are presented in the grid. There are more numbers on the board to help to direct the player how to start the solution and to ensure that Hidoku has only a single solution.Hidoku puzzles are similar to Numbrix. The most important difference is that diagonal moves are allowed. The puzzle book contain: - 200 Puzzles- Handy 6 x 9 inch Book Layout- 2 Puzzles per Page- Ideal for both Beginners and Experts 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.

Masyu is a type of logic. The purpose of its creation was to present a puzzle that uses no numbers or letters and yet retains depth and aesthetics. Masyu is played on a rectangular grid of squares, some of which contain circles, each circle is either "white" (empty) or "black" (filled). The goal is to draw a single continuous non-intersecting loop that properly passes through all circled cells. The loop must "enter" each cell it passes through from the center of one of its four sides and "exit" from a different side, all turns are therefore 90 degrees. The two varieties of circle have differing requirements for how the loop must pass through them: - White circles must be traveled straight through, but the loop must turn in the previous and/or next cell in its path. - Black circles must be turned upon, but the loop must travel straight through the next and previous cells in its path.

Tents (also known as "Tents and Trees") is a logic puzzle. The task is a grid of squares, some of them contain trees. The goal is to place tents in some of the remaining squares, in such a way that the following conditions are met: There are exactly as many tents as trees. The tents and trees can be matched up in such a way that each tent is directly adjacent (horizontally or vertically, but not diagonally) to its own tree. However, a tent may be adjacent to other trees as well as its own. No two tents are adjacent horizontally, vertically or diagonally. The number of tents in each row, and in each column, matches the numbers given round the sides of the grid.

Yajilin (also known as "Arrow Ring", "Straight and Arrow") is a type of logic puzzle published by Nikoli. The goal is to draw a single continuous non-intersecting loop that connects the centers of the grid cells. The loop may not pass through any cells which contain arrows. The loop may only travel horizontally or vertically, and never diagonally. Any cell that does not have an arrow and which is not part of the loop must be shaded in black. Black cells do not touch each other orthogonally (they do not share a side). A cell containing a number and an arrow represents how many black cells are in the row or column pointed at by the arrow. There may be black cells that are not accounted for by the cells with arrows and numbers.

Rekuto is played on a rectangular or square grid. Some of the cells have numbers in them. The aim is to divide the grid into rectangular and square pieces such that each piece contains exactly one number, and that number represents the sum of the width and height of the rectangle.

No Four in a Row is played on a grid of irregular shape. Some cells of the grid contain 'X' and 'O'. The task is to fill in the grid so that four consecutive identical symbols never appear in any row, column or diagonal. The puzzle book contain: - 200 Puzzles- Handy 6 x 9 inch Book Layout- 2 Puzzles per Page- Ideal for Experts 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.

Tenner Grid (also known as "From 1 to 10", "Zehnergitter", "Grid Ten") consists of a rectangular grid of width ten cells.The task is to fill in the grid so that every row contains the digits 0 through 9.In columns the numbers may be repeated.The bottom numbers give the sum of the numbers in column.The digits in contiguous cells (even diagonally contiguous cells) must be different. The puzzle book contain: - 200 Puzzles- Handy 6 x 9 inch Book Layout- 2 Puzzles per Page- Ideal for Experts 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.

Tapa is a logic puzzle. The goal is to blacken some cells of the grid. All the black cells form one contiguous region. No 2 x 2 cell area within the grid can contain all black cells. Clue cells with numbers may not be filled in and tell the length of each consecutive black cell block in the eight surrounding cells. If there's more than one digit in a cell, the groups of black cells have to be separated by at least one white cell. Question marks can be used instead of clue numbers. Each question mark can represent any nonzero integer.

Kakuro (auch als "Cross Sums" und "Kakro" bekannt) ist ein logisches Rätsel, ein mathematisches Äquivalent der Kreuzworträtsel. Das Rätsel besteht aus einem Spielbereich von gefüllten und leeren Zellen ähnlich zu einem Kreuzworträtsel. Einige schwarze Zellen enthalten einen diagonalen Schrägstrich von oben links nach unten rechts mit Ziffern darin, die "Hinweise" genannt. Eine Ziffer in der oberen rechten Ecke bezieht sich auf einen "waagerecht" Hinweis und eine in der unteren linken einen "senkrecht" Hinweis. Das Ziel von Kakuro ist, Ziffern von 1 bis 9 in die weißen Zellen einzufügen, um den Hinweis darauf zu summieren. In einem Eintrag kann jedoch keine Ziffer dupliziert werden. Zum Beispiel die Summe von 6 könnten Sie durch 1 und 5, 2 und 4 aber nicht 3 und 3 bekommen. Das Rätselbuch enthält: - 500 Logik Rätsel- Händelbares 6 X 9 Buchformat- 6 Rätsel pro Seite - Optimal für Anfänger und Experten In dem Buch finden Sie eine Beschreibung und Beispiele der Lösungen für alle Rätsel. Das Buch ist für alle, die Logik und mathematische Probleme mögen. Lösen, entwickeln und verbessern.

Fillomino (also known as "Polyominous") is a type of logic puzzle. It is played on a rectangular grid of squares. Some cells of the grid start containing numbers, referred to as "givens". The goal is to divide the grid into blocks. The block must contain the number of cells indicated by the number in the cells of the block. The block cannot touch a similarly sized block, horizontally or vertically. Cells without numbers may form blocks necessary to complete the puzzle.