Kirjahaku

Tents ("Tents and Trees") is a logic puzzle invented by L on Balmaekers (Netherlands). 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. math brain teasers for kids - brain teaser games for kids - mind puzzles for kids - brain puzzles for kids - brain teasers for kids with answers - maths riddles and puzzles - simple brain teasers - brain games for kids - brain twister puzzle - riddles and brain teasers with answers - best brain teaser games - logic puzzles with answers - challenging puzzle games - brain teasers for children

Nurikabe is a logic puzzle ("nurikabe" in Japanese folklore is an invisible wall that blocks roads and upon which delays in foot travel are blamed; other names for the puzzle: "Cell Structure", "Islands in the Stream"). The puzzle is played on a grid, typically rectangular with no standard size. Some cells of the grid start containing numbers.The goal is to determine whether each of the cells of the grid is "black" or "white" according to the following rules: - All of the black cells must be connected. - Each numbered cell must be part of a white island of connected white cells. - Each island must have the same number of white cells as the number it contains (including the numbered cell). - Two islands may not be connected. - There cannot be any 2 x 2 blocks of black cells. math brain teasers for kids - brain teaser games for kids - mind puzzles for kids - brain puzzles for kids - brain teasers for kids with answers - maths riddles and puzzles - simple brain teasers - brain games for kids - brain twister puzzle - riddles and brain teasers with answers - best brain teaser games - logic puzzles with answers - challenging puzzle games - brain teasers for children

Corral (also known as "Bag", "Cave") is a logic puzzle invented by Nikoli. The aim is to draw a single closed loop along the grid lines that does not intersect itself. The loop goes around all numbers. The numbers in the grid indicate how many cells inside the loop can be seen horizontally and vertically from that cell, including the cell itself. Question marks can be used instead of clue numbers. Each question mark can represent any nonzero integer.math brain teasers for kids - brain teaser games for kids - mind puzzles for kids - brain puzzles for kids - brain teasers for kids with answers - maths riddles and puzzles - simple brain teasers - brain games for kids - brain twister puzzle - riddles and brain teasers with answers - best brain teaser games - logic puzzles with answers - challenging puzzle games - brain teasers for children

Numbrix is a type of maths puzzle. It is played on a rectangular grid of squares. Some of the cells have numbers in them. The object is to fill in the missing numbers, in sequential order, going horizontally and vertically only. Diagonal paths are not allowed.math brain teasers for kids - brain teaser games for kids - mind puzzles for kids - brain puzzles for kids - brain teasers for kids with answers - maths riddles and puzzles - simple brain teasers - brain games for kids - brain twister puzzle - riddles and brain teasers with answers - best brain teaser games - logic puzzles with answers - challenging puzzle games - brain teasers for children

Meadows is a logic puzzle. It is played on a rectangular or square grid. Some of the cells have circles in them. The aim is to divide the grid into square blocks such that each block contains exactly one circle.math brain teasers for kids - brain teaser games for kids - mind puzzles for kids - brain puzzles for kids - brain teasers for kids with answers - maths riddles and puzzles - simple brain teasers - brain games for kids - brain twister puzzle - riddles and brain teasers with answers - best brain teaser games - logic puzzles with answers - challenging puzzle games - brain teasers for children

Heyawake (from Japanese, "divided rooms") is played on a rectangular grid. The grid is divided into rectangular "rooms". Some rooms may contain a single number. These rooms must have the designated number of cells painted black. Other rooms may have zero or more cells painted black.- Black cells must not be orthogonally connected. - All white cells must be interconnected. - A line of connected white cells must not connect more than two rooms together. logic brain teasers with answers - puzzles and brain teasers - math brain teasers for adults - mind challenging games - mind twisters - math riddles and answers - puzzles and games for adults - brain challenge - good brain teasers - funny puzzles - brain puzzles with answers - puzzle and brain games - mental puzzles - fun brain games for adults - easy brain teasers - brain twister puzzle - riddles and brain teasers with answers - best brain teaser games - logic puzzles with answers - challenging puzzle games

Sukoro consists of a rectangular or square grid with numbers from 1 to 4 in some cells. The number inside a cell represents how many neighbouring cells contain numbers. When two cells with numbers are orthogonally adjacent, the numbers must be different. All the cells with numbers must be connected horizontally or vertically. logic brain teasers with answers - puzzles and brain teasers - math brain teasers for adults - mind challenging games - mind twisters - math riddles and answers - puzzles and games for adults - brain challenge - good brain teasers - funny puzzles - brain puzzles with answers - puzzle and brain games - mental puzzles - fun brain games for adults - easy brain teasers - brain twister puzzle - riddles and brain teasers with answers - best brain teaser games - logic puzzles with answers - challenging puzzle games

Arukone ("Number Link") consists of a rectangular or square grid with numbers in some cells. The goal is to connect each pair of numbers with single continuous lines. The lines must neither cross nor touch each other. logic brain teasers with answers - puzzles and brain teasers - math brain teasers for adults - mind challenging games - mind twisters - math riddles and answers - puzzles and games for adults - brain challenge - good brain teasers - funny puzzles - brain puzzles with answers - puzzle and brain games - mental puzzles - fun brain games for adults - easy brain teasers - brain twister puzzle - riddles and brain teasers with answers - best brain teaser games - logic puzzles with answers - challenging puzzle games

CalcuDoku is a mathematical and logical puzzle loosely similar to Sudoku. It was invented by a Japanese mathematics teacher Tetsuya Miyamoto. The objective is to fill the grid in with the digits 1 through N (where N is the number of rows or columns in the grid) such that: - Each row contains exactly one of each digit. - 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 ( ). - Unlike Killer Sudoku, digits may repeat within a block. logic brain teasers with answers - puzzles and brain teasers - math brain teasers for adults - mind challenging games - mind twisters - math riddles and answers - puzzles and games for adults - brain challenge - good brain teasers - funny puzzles - brain puzzles with answers - puzzle and brain games - mental puzzles - fun brain games for adults - easy brain teasers - brain twister puzzle - riddles and brain teasers with answers - best brain teaser games - logic puzzles with answers - challenging puzzle games

Shirokuro is a logic puzzle invented by Nikoli. It contains white and black circles. The task is to connect each white circle with a black circle by a horizontal or vertical line. Lines are not allowed to cross other lines. The line between two circles may not pass through other circles. logic brain teasers with answers - puzzles and brain teasers - math brain teasers for adults - mind challenging games - mind twisters - math riddles and answers - puzzles and games for adults - brain challenge - good brain teasers - funny puzzles - brain puzzles with answers - puzzle and brain games - mental puzzles - fun brain games for adults - easy brain teasers - brain twister puzzle - riddles and brain teasers with answers - best brain teaser games - logic puzzles with answers - challenging puzzle games

Shimaguni is a logic puzzle published by Nikoli. A rectangular or square grid is divided into regions. The goal is to blacken some cells of a grid according to the following rules: - All black cells in a region must be connected. - A cell with a number indicates how many cells in the region must be blackened. - In regions without a number any amount of cells may be blackened (at least one). - Two regions with the same amount of black cells must not be orthogonally adjacent. - When two cells are orthogonally adjacent across a region boundary, at least one cell must be white. logic brain teasers with answers - puzzles and brain teasers - math brain teasers for adults - mind challenging games - mind twisters - math riddles and answers - puzzles and games for adults - brain challenge - good brain teasers - funny puzzles - brain puzzles with answers - puzzle and brain games - mental puzzles - fun brain games for adults - easy brain teasers - brain twister puzzle - riddles and brain teasers with answers - best brain teaser games - logic puzzles with answers - challenging puzzle games

Clouds (also known as "Rain Clouds", "Radar") is a variant of Battleship puzzle. The task is to mark certain cells of the rectangular grid as belonging to a cloud. Clouds occupy an area of rectangular shape and their width and height is at least two cells. No clouds touch each other, not even diagonally. Numbers outside the grid show the quantity of cells occupied by clouds in corresponding row or column. logic brain teasers with answers - puzzles and brain teasers - math brain teasers for adults - mind challenging games - mind twisters - math riddles and answers - puzzles and games for adults - brain challenge - good brain teasers - funny puzzles - brain puzzles with answers - puzzle and brain games - mental puzzles - fun brain games for adults - easy brain teasers - brain twister puzzle - riddles and brain teasers with answers - best brain teaser games - logic puzzles with answers - challenging puzzle games

In Digital Battleships all cells of the grid contain numbers. The values on the right and bottom edges of the grid reveal the sum of the numbers in each of the ship pieces that appear in each respective row or column. logic brain teasers with answers - puzzles and brain teasers - math brain teasers for adults - mind challenging games - mind twisters - math riddles and answers - puzzles and games for adults - brain challenge - good brain teasers - funny puzzles - brain puzzles with answers - puzzle and brain games - mental puzzles - fun brain games for adults - easy brain teasers - brain twister puzzle - riddles and brain teasers with answers - best brain teaser games - logic puzzles with answers - challenging puzzle games

EntryExit consists of a rectangular or square grid divided into regions. The aim is to draw a single continuous non-intersecting loop that passes through all cells. It can enter and exit each region only once. logic brain teasers with answers - puzzles and brain teasers - math brain teasers for adults - mind challenging games - mind twisters - math riddles and answers - puzzles and games for adults - brain challenge - good brain teasers - funny puzzles - brain puzzles with answers - puzzle and brain games - mental puzzles - fun brain games for adults - easy brain teasers - brain twister puzzle - riddles and brain teasers with answers - best brain teaser games - logic puzzles with answers - challenging puzzle games

Sign In is played on 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. Some digits may be given at the start. If absolute difference between two digits in neighbouring cells equals 1, then they are separated by a sign "+" or "-". If a border between cells contains a sign "+", a digit in a left or upper cell is one lower than a digit in a right or lower cell. If a border between cells contains a sign "-", a digit in a left or upper cell is one bigger than a digit in a right or lower cell. All instances of consecutive digits are shown by these signs. hard brain teasers - hard math riddles - hard brain teasers with answers - hard puzzles - hardest puzzle - worlds hardest puzzle - hard maths puzzles with answers - hard math puzzles - hard brain teasers for adults - hard brain puzzles - hard mind puzzles - hard math riddles for adults with answers - hard math riddles with answers - hard puzzle games - hard math puzzles for adults - hard mathematical puzzles - very hard maths puzzles - hard mathematical riddles with answers - very hard math riddles - hard mathematical riddles

Kakuro (also known as "Cross Sums") is a logical puzzle, a mathematical equivalent of crosswords. The puzzle consists of a playing area of filled and empty cells similar to a crossword puzzle. Some black cells contain a diagonal slash from top left to bottom right with numbers in them, called "the clues". A number in the top right corner relates to an "across" clue and one in the bottom left a "down" clue.The object of a kakuro is to insert digits from 1 to 9 into the white cells to total the clue associated with it. However no digit can be duplicated in an entry. For example the total 6 you could have 1 and 5, 2 and 4 but not 3 and 3. maths puzzles - mathematical puzzles - math riddles - maths puzzles with answers - math puzzles for adults - maths puzzle games - math brain teasers - simple maths puzzles - maths puzzles with solutions - fun math puzzles - simple maths puzzles with answers - mathematical puzzles with answers - easy maths puzzles - math logic puzzles - fun math problems - math puzzles brain teasers - maths riddles with answers - mathematical riddles - math riddles for adults - math challenge

Rossini Sudoku is a variation of the classic sudoku. The arrows outside the grid indicate that the nearest three digits in the corresponding direction are in ascending or descending order (the highest number is always in the direction of the arrow). All possible arrows are given, so if there is no arrow, the first three digits do not form an increasing sequence in either direction. maths puzzles - mathematical puzzles - math riddles - maths puzzles with answers - math puzzles for adults - maths puzzle games - math brain teasers - simple maths puzzles - maths puzzles with solutions - fun math puzzles - simple maths puzzles with answers - mathematical puzzles with answers - easy maths puzzles - math logic puzzles - fun math problems - math puzzles brain teasers - maths riddles with answers - mathematical riddles - math riddles for adults - math challenge

Sukrokuro combines the elements of three logic puzzles: Sudoku, Kropki Sudoku and Kakuro. It consists of a square grid with white and black cells. The goal is to fill in the white cells, one number in each, so that each column and row contains the numbers 1 through 9 exactly once. Black cells contain a diagonal slash from top left to bottom right with numbers in them, called "the clues". Such number tells the sum of numbers in consecutive cells at its right or downward. If absolute difference between two numbers in neighbouring cells equals 1, then they are separated by a dot. If a dot is absent between two white cells, the difference between the numbers in these cells is more than 1. maths puzzles - mathematical puzzles - math riddles - maths puzzles with answers - math puzzles for adults - maths puzzle games - math brain teasers - simple maths puzzles - maths puzzles with solutions - fun math puzzles - simple maths puzzles with answers - mathematical puzzles with answers - easy maths puzzles - math logic puzzles - fun math problems - math puzzles brain teasers - maths riddles with answers - mathematical riddles - math riddles for adults - math challenge

Hakoiri is a logic puzzle published by Nikoli. A rectangular or square grid is divided into regions. The goal is to place exactly one triangle, one square and one circle in each region. The same figures cannot be placed in adjacent cells, not even diagonally. All the figures must be connected horizontally or vertically. maths puzzles - mathematical puzzles - math riddles - maths puzzles with answers - math puzzles for adults - maths puzzle games - math brain teasers - simple maths puzzles - maths puzzles with solutions - fun math puzzles - simple maths puzzles with answers - mathematical puzzles with answers - easy maths puzzles - math logic puzzles - fun math problems - math puzzles brain teasers - maths riddles with answers - mathematical riddles - math riddles for adults - math challenge

Yin-Yang consists of a rectangular or square grid with white and black circles in some cells. The aim is to place a black or white circle in each empty cell so that all circles of same color are connected to each other, vertically or horizontally. Additionally, no 2 x 2 group of cells can contain circles of the same color. maths puzzles - mathematical puzzles - math riddles - maths puzzles with answers - math puzzles for adults - maths puzzle games - math brain teasers - simple maths puzzles - maths puzzles with solutions - fun math puzzles - simple maths puzzles with answers - mathematical puzzles with answers - easy maths puzzles - math logic puzzles - fun math problems - math puzzles brain teasers - maths riddles with answers - mathematical riddles - math riddles for adults - math challenge