15 questions linked to/from Tips for Golfing in Brain-Flak
152k views

### “Hello, World!”

So... uh... this is a bit embarrassing. But we don't have a plain "Hello, World!" challenge yet (despite having 35 variants tagged with hello-world, and counting). While this is not the most ...
10k views

### Diagonal Alphabet

8k views

Challenge: The concept is simple enough: write a full program to output its own code golf score! Output should only be the byte count of your program and a trailing ...
9k views

### Magic the Gathering: Friends or Foes?

In the card game Magic: the Gathering there are five different colours, which represent loose affiliations of cards, White (W), Blue (...
4k views

### Division and remainder

This challenge, while probably trivial in most "standard" languages, is addressed to those languages which are so esoteric, low-level, and/or difficult to use that are very rarely seen on this site. ...
4k views

### Output the missing integer

You will be given a string. It will contain 9 unique integers from 0-9. You must return the missing integer. The string will look like this: ...
3k views

### Triangle a number!

We are used to the term "squaring" n to mean calculating n2. We are also used to the term "cubing" n to mean n3. That being said, why couldn't we also triangle a number? How to triangle a number? ...
2k views

### Antsy permutations

Introduction Suppose you have a ruler with numbers from 0 to r-1. You place an ant between any two of the numbers, and it starts to crawl erratically on the ruler. The ruler is so narrow that the ant ...
2k views

### Wherre are the adjacent characters in the title? [3, 4]!

Title misspelled on purpose. Read more to find out why. Your task: given a delimited string or list including the characters A,B,C,D, output the indexes of all the ...
823 views

### Parse a list of signed unary numbers

Unary numbers typically only represent nonnegative integers, but we can extend them to represent all integers as follows: A positive integer N is represented as N 1...
2k views

### Golf a Brain-Flak Integer

Integers are tedious to represent in Brain-Flak. There are 8 operators: ...
2k views

### The Third Flak!

This challenge was posted as part of the April 2018 LotM challenge Brain-Flak is a turing-tarpit language which has gained quite a lot of fame here on PPCG. The memory of the language is composed by ...
1k views

### Fastest Mini-Flak Quine

Mini-Flak is a subset of the Brain-Flak language, where the <>, <...> and [] ...