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.
For puzzles that involve a famous quotation.
Puzzles involving the manipulation of coins as physical objects inside a set of rules.
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".
For questions related to the puzzle of islanders who can only leave when they deduce the colour of their own eyes.
A puzzle that includes emoji in the question. Often, the goal of the puzzle involves deciphering their meaning.
In a 'blackboard puzzle' a set of numbers is transformed according to certain rules.
For puzzles of the form of "What do these three words have in common?"
puzzles involving cellular automatons in a 2D or 3D grid.
A question about assessing or adjusting the difficulty level of a puzzle.
A type of puzzle typically involving a grid of lights, in which the challenge is to get them all to the same state (on or off). The trick is that each light also affects a number of its neighbors, wi…
A bongard consists of mainly 6 boxes on the left and 6 boxes on the right. The task of a bongard problem is to discover a statement that describes the contents of each box on the left side, but does n…
to play with words in order to find the solution.
For puzzles that use an aspect of information theory - the processing and transmission of information.
A puzzle which involves networks. Often, such puzzle are in connection with mathematical graph-theory.
Puzzles related to the video game 2048.
For puzzles about locks or any other similar mechanisms.
a word, phrase, number, or other sequence of characters which reads the same backwards and forwards.
A question about electronic circuits and logic gates.
For questions about the game of Tetris, or puzzles which involve or relate to this game. Not for general puzzles involving tetrominoes, which may be tagged [polyomino] instead.
Puzzles may involve a homonym, a word that is said or spelled the same way as another word but has a different meaning. A riddle may describe an almost impossible phenomenon where there are two disti…
A puzzle asking about a proof (usually mathematical) expressed with diagrams and without words.
Crossword puzzle in which strings of letters have been removed from each sentence, and the remaining letters rearranged to form a new sentence (but keeping the same order). The removed strings are the…
a chess problem in which one side, usually White, forces the the other side, usually Black, to checkmate them while the other side actively plays to avoid give checkmate. Please also tag…
A combinatorial puzzle related to Latin squares.
a well-known probability puzzle centered around three doors, two goats, and one car.
A question about categories, mechanics, or effects of puzzle in general, or about scientific research on puzzles.
a recreational activity in which locations, typically concealing hidden containers are found using a GPS enabled phone or similar device.
used for discussing the number of solutions of a puzzle type or a concrete puzzle.
Word game in which players score points by placing tiles, each bearing a single letter, onto a gameboard which is divided into a 15×15 grid of squares. The tiles must form words in crossword fashion.
used for problems regarding functional equations in mathematics. Usually to be used together with the [mathematics] tag.
Question about the Homeworlds board game in which the players try to colonize the space in an epic, galaxy-wide struggle between Good and Evil.
MathJax programming puzzles have solutions that are automatically rendered anew each time they are browsed. (MathJax is Puzzling's on-site facility for displaying mathematics and is capable of …
a game, usually online, involving puzzles and ciphers hidden in mysterious videos, images or audio with a story behind them. Usually it is meant to promote a product.
For use in puzzles where a specific order of events or decisions needs to be made.