7k views

### Determine whether a number is 2017-friable without primes in your source code

Out of all the years I've been making this challenge, 2017 is the first year that's been a prime number. So the question will be about prime numbers and their properties. Your task is to produce a ...
• 35k
2k views

### Build interpreter for non-existent language

Build an interpreter for a fake, stack-based language that gets an input, interprets it, and outputs the result as an array of numbers. It should iterate through each byte and perform a different ...
• 903
710 views

### Count up from 0 to 2017 without numbers in your source

This question was profoundly inspired by Joe Z's question. But, with a twist... So, now that it's almost 2017, it's time for a code question involving the number 2017. Your task is to make a program ...
17k views

### Tips for golfing in 05AB1E

Do you have any tips for code-golfing in 05AB1E, a golfing language created by Adnan? Your tips should be at least somewhat specific to 05AB1E. Please post one tip per answer.
• 10.6k
2k views

• 1,087
2k views

### Recycling for the New Year

A good resolution for 2015 is to live more sustainably. We'll start by recycling. Recycling code, that is! Your task is to print the number 2015 to STDOUT, with or ...
• 197k
2k views

### Anti-golfscript anti-golf: create a task where GolfScript or J is outgolfed by your (conventional) lang [closed]

You need to make three things: Statement of a task, T. Solution of the task in language not typically used for golfing, A. Solution of the task in language typically used for golfing, B. Don't try to ...
• 2,697
873 views

### Happy new year string builder

This question is inspired by this awesome answer. The challenge is to write a program or function which takes in a positive integer, and outputs "Happy new year to you" or a slight variation ...
• 3,164
2k views

### Auto-golf an esolang

The lack of a social life drove a poor nerd into inventing another superfluous esolang called !+~%. For no good reason it initializes the accumulator with ...
• 2,570
370 views

### 12 with no 1234567890, but polyglot

This is my 12th question, so I thought of this idea. Goal: Output 12, with any preceding or trailing whitespace permitted In as many languages as possible (where different versions or flags count as ...
• 1,548
3k views

### Eternal 2014 — PCG.SE New Year’s Puzzle 2015

So, now that it's 2015, and a bunch of answers from last year's puzzle are now starting to produce invalid output, it's time for a question involving the number 2015. Except... why? Wouldn't you like ...
• 35k
909 views

Golf the leaderboard of this question (id=111735). Your program should issue one HTTP or HTTPS request to StackExchange API, parse it and present to user in form similar to a typical Leaderboard ...
• 2,697
1k views

### Produce the number 2014 from an image [closed]

In the 2014 challenge, Michael Stern suggests using OCR to parse to 2014. I'd like to take this challenge in a different direction. Using built-in OCR from the language/standard library of your ...
• 2,771
414 views

### I deserve a castle for it only being Tuesday

It is only Tuesday, ugh. I deserve a treat. Golf me a Castle. The Least amount of bytes wins! Taken no input and output this image exactly: ...
• 2,634