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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.

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× 1153
a competition to solve a particular problem in the fewest characters or bytes of source code. A competition which scores on a mixture of source length and some other criterion should be t…
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a competition for creative ways to solve a programming puzzle with an objective winning criterion not covered by other scoring tags (e.g. code-golf).
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The challenge involves mathematics. Also consider using more specific tags: [tag:number] [tag:number-theory] [tag:arithmetic] [tag:combinatorics].
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a competition where the correct answer with the most upvotes wins, usually the most creative answer.
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intended to be solved by using, creating, or resolving some processing algorithm.
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This challenge involves creating pictures using text characters as the brush. Typically this uses only standard ASCII characters.
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A competition to solve a particular problem through the usage and manipulation of strings.
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intended to be solved by using, manipulating, accepting as input, or outputting numeric values.
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a problem or enigma that tests the ingenuity of the solver. Solutions may require recognizing patterns and creating a particular order.
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Tips for either golfing or programming challenges. In most current cases it is for helpful tips and tricks how one could golf more effectively with a particular language.
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a criterion of this challenge. "Faster, faster would be better."
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the amount of code it takes to produce a given string of text.
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generally based upon, related to, or simulates game or some portion of one.
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Problems involving prime numbers.
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a program which produces its source as output.
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related to the C language. Note that challenges that require the answers to be in a specific language are generally discouraged.
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This challenge involves drawing pictures on a screen or generating image files. For ASCII art output, use [tag:ascii-art]. For images as input, use [tag:image-processing].
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related to the C++ language. Note that challenges that require the answers to be in a specific language are generally discouraged.
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is applied to questions that ask for answers heavily involving the use of advanced mathematics.
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Tasks involving random numbers and/or output.
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Tasks involving writing interpreters for various languages or formalisms.
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related to the JavaScript language. Note that challenges that require the answers to be in a specific language are generally discouraged.
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Suppose some Stack Overflow user asks a homework give-me-teh-codez question. The task is to give code that works, but is useless, severely frustrating the OP.
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related to the Python language. Note that challenges that require the answers to be in a specific language are generally discouraged.
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a branch of pure mathematics devoted primarily to the study of the integers. (From [Wikipedia](http://en.wikipedia.org/wiki/Number_theory))
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The solution must use printable ASCII characters, in specific, 32(space)~126(~), tab, and newline characters(CR and LF).
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Code challenges that involve the use of regular expressions.
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intended to be solved by using, manipulating, accepting as input, outputting, or calculating calendar dates.
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Problem relates to the game of chess.
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Fibonacci, Leonardo, a middle age mathematician, who is mostly known for the fibonacci-sequence 0, 1, 1, 2, 3, 5, 8, 13, ...
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intended to be solved by sorting, ordering, or otherwise organizing some set of data.
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intended to be solved by using, manipulating, or creating shapes or other geometric structures.
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the base 2 number system. Use this tag for challenges involving base 2.
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