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.
The Frobenius problem asks for the largest amount that cannot be obtained by using only coins of specified denominations.
An Oppogram as an anagram of opposites. For example : ratify smart peace → deny slow war → Wayne's World
Puzzles based on the analysis of an audio clip
kept for historical reasons, and semi-interactive puzzles should not be considered good questions for this site. Semi-interactive puzzles are those where …
A puzzle centered around graphs produced by the Google books Ngram viewer.
often get closed. Consult meta before creating a cops-and-robbers challenge.
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…
for when a local or regional dialect of a language is relevant to the solution of a puzzle.
A pangram sentence uses every letter of the alphabet at least once.
a sliding block puzzle on a 6x6 grid, where the tiles represent cars.
a cube-shaped twisty-puzzle with eight geared corners that has been designed by the famous Dutch puzzel designer Oskar van Deventer.
n people standing in a circle. A counter goes clockwise around the circle and repeatedly eliminates every k-th person in the circle, until one person (the winner) remains. Where should you s…
A puzzle that makes use of astronomical knowledge, such as the names and positions of stars and planets.
used for geometric puzzles, if one wants to stress that the setting is not 2-dimensional nor 3-dimensional, but 4-dimensional.
A puzzle about the card game SET, played with a deck of 81 cards.
For puzzles regarding the board game Reversi. Also known as Teeko.
For puzzles based around the game 0hno, found at 0hn0.com: a grid logic game in which you must deduce which dots are blue and which are red. Related to the game 0hh1 made by the same people.
For puzzles based around the game 0hh1, found at 0hh1.com: a grid logic game in which you must deduce which tiles are blue and which are red. Related to 0hn0, which is made by the same people.