A tag is a keyword or label that categorizes your question with other, similar questions. Using the right tags makes it easier for others to find and answer your question.
A puzzle in which a seemingly impossible situation is presented, or any sort of construction that results in a logical contradiction.
For questions regarding how to get items or people across something obeying a set of rules.
Puzzles that use number properties such as even and odd, multiples of numbers, part of a well-known sequence (i.e. Fibonacci) or theorem (Pythagorean relations) or others in part of the method to solv…
The history of puzzles and their creation, as well as any methodologies which have developed over time. For puzzles about history, use the [history] tag instead.
a 5-line poem with a strict AABBA rhyme scheme, often with five-line anapestic meter, sometimes obscene with humorous intent.
A puzzle that makes use of chemical knowledge, such as the names and atomic numbers of chemical elements.
A puzzle that asks for finding the hidden pattern in a given word sequence.
Puzzles in the form of a haiku, a very short form of poetry, typically a three line observation on a certain topic.
a strategy-based puzzle game with hidden bombs in some cells. Certain other cells contain numbers to say how many bombs are adjacent to that cell. The object is to find all the bombs wi…
A puzzle that involves tiles (or the concept of tiles) in the shape of 2x1 rectangles, divided into 2 squares, each containing 0 to 6 spots. It may require knowledge of general rules of the game, Dom…
A strategic puzzle centered around pouring liquids between various bottles, with the goal of measuring exactly n liters.
A puzzle centred around kinship, family ties, ancestry, relatives, blood ties and other family bonds.
a tiling puzzle that requires the assembly of (often oddly shaped) interlocking and tessellating pieces.
is for all questions related to solving or discussing Rubik's Cube related puzzles.
A puzzle based on the folding of a piece of paper (also known as origami).
A puzzle in which you need to find and follow links to successive i.stack.imgur images in order to progress.
a logic puzzle where the goal is to draw a loop so each number has that many edges of the loop adjacent to it.
A puzzle about disentangling knots, folding paper, separating strings and wires, and understanding the connectivity properties of elastic figures.
A geometry puzzle centered around the triangle or the centers of a triangle.
Any puzzle where a team of pursuers must capture a team of targets, with movement limited to some given space. The goal is to find a winning strategy either for the pursuers or for the evaders.
a logic puzzle where the goal is to draw a single loop through every circle in a grid. A loop passing through a white circle must pass directly through it and make a turn on at least one side…
For puzzles related to Magic: the Gathering trading card game. For example, these could involve challenges like winning from a given board state, or puzzles related to a specific card or deck.
A puzzle involving a calculation from which some digits have been removed. Different from an [alphametic] in that it is not specified which digits are the same or different from each other.
A puzzle about flipping/tossing coins. Typical examples are about the probability that head or tail comes out.
A puzzle that involves arranging objects optimally in order to fit in a specified space.
A strategy game in which players take turns to reduce the number of objects in some sets, the aim being either to remove the last object or _not_ to do so.
Puzzles that revolve around a magic trick, or an illusion of sorts. Do not use this tag for a puzzle revolving around something as "witchcraft".
Puzzles involving the manipulation of coins as physical objects inside a set of rules.
Speedsolving typically refers to solving a physical puzzle as quickly as possible. For instance, one might use this tag when asking about optimal Rubik's cube algorithms. This tag is not necessarily l…
A puzzle involving making connections between several clues in a list.