91 questions linked to/from Golf you a quine for great good!
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### Tips for Creating/Maintaining a Golfing Language

Creating a golfing language can be hard. Let's help budding golfing language creators out and provide some helpful tips on how to create one. I'm looking for tips on: The design process ...
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### What is the shortest brainfuck quine? [duplicate]

(Apart from the empty program of course) The shortest I could find was this 410 byte beauty: ...
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### Rock Paper Scissors (Sorta) Quine

Create three programs, which we'll call Rock, Paper, and Scissors. Each program must be unique, and accept input. If a program gets any input which is not one of the programs Rock, Paper or ...
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### Write a piece of code that prints out itself [duplicate]

I'm new to this site, so I don't know whether this challenge already appeared: Write a piece of source code, so that after running the code, it prints out exactly (i.e. not longer, not shorter) the ...
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### Y2K… in 2019?

It's August 10th, 2019, but your task still involves Y2K. Weird, right? Create a program that prints itself, with a two digit number appended to it. The first time you run it, it should append 00 to ...
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### Print the last, middle and first character of your code

The challenge is simple: Print the last, middle, and first character of your program's source code, in that order. The middle character is defined as follows, assuming a source length of ...
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### The anti-narcissist

The narcissist is a program which, given its own source as input, prints a truthy value and, given anything other than that, prints a falsey value. Today, we're reversing this. Create a program that, ...
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### 45 degree quine [closed]

A very simple golf this time, but should be fun to do. Challenge Output your code, but rotated 45 (or -45) degrees. E.g: lorem ipsum dolor sit amet becomes <...
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Challenge Return the full contents of your program, but inverted. How do your invert something? Well, Letters: Take the position of the letter in the alphabet, subtract from 26, and use the letter ...
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### Meta-bowling Golf

Your task is to create the shortest program (A) that outputs another program (B) with the most unique bytes, which in turn outputs the original program (A). Essentially, you are golfing one half of a ...
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### Quine outputs itself in binary

Your task, if you wish to accept it, is to write a program that outputs its own source code in the binary UTF-8 representation. Rules The source must be at least 1 byte long. Your program must not ...
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### Create a kind of quine, such that the program prints one character of itself, then two, then three and so on

Create quine variant such that the program prints its first character, then the first two, then three and so on until the whole program is printed. Example Suppose your code is ...
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### Q​u​i​n​e R​e​l​a​y​!

Quine Relay! A quine relay of order $n$ is a series of programs $P_1\dots P_n$ in distinct languages such that each program $P_i$ outputs $P_{i+1}$ and $P_n$ outputs $P_1$. For example, ...