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Questions tagged [cops-and-robbers]

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From questions specifically about [cops-and-robbers] challenges. Note that [cops-and-robbers] challenges should be posted to the main site or the Sandbox, not here

18 questions
Newest Active Unanswered Frequent
2 votes
0 answers
91 views

Season 2 is coming! Season 1 was fun and relatively well-received, but the main problem was that the scoring system is very broken. Hence I'm looking for advice about how to improve the system so that ...
Shiran Yuan's user avatar
  • 610
4 votes
2 answers
182 views

I've cooked up a few king-of-the-hill challenges, mostly in the sandbox, and a few of them are asymmetric in nature. They're not really cops-and-robbers because it's not really about cracking a code, ...
Beefster's user avatar
  • 10.1k
4 votes
0 answers
281 views

As per this question's answers, Scratch 2.0 is no longer considered a "free" language. As per this question's accepted answer, non-free languages are allowed if marked as non-competing. Scratch 2.0 ...
Silas Reel's user avatar
  • 161
11 votes
4 answers
906 views

Regarding this suggested crack, do I have to accept it as valid? The code there is not valid 6502 machine code because it uses an opcode that doesn't exist (and won't work / crash on CMOS variants of ...
Felix Palmen's user avatar
  • 4,286
2 votes
0 answers
115 views

Sometimes the classic CnR winning criterion: Cops If your submission has not been cracked within a week, it is considered safe. The shortest safe submission wins. Robbers The robber ...
user avatar
1 vote
0 answers
168 views

I would like to mainly give myself programming challenges by basically asking multiple times to break my previous code. This would be like the "cops and robbers" format on PP&CG, only that I would ...
Fabian Röling's user avatar
  • 148
3 votes
9 answers
541 views

So, recently in the Hello World CnR challenge I've come across this crack to my submission. I don't think it's ever clearly defined before in any CnRs what exactly is allowed as an input and what is ...
Voile's user avatar
  • 406
7 votes
1 answer
332 views

I've had two challenge ideas floating around in my head for a while. I'll spare the details but as a general overview: The first is a challenge that should, in principle, be fun but in practice it is ...
Wheat Wizard's user avatar
  • 104k
1 vote
0 answers
282 views

In my new sandboxed challenge, I'm looking to ban crypto / one-way functions that make it impossible to get the input from the output. I started out requiring only using functions that are bijectve, ...
user avatar
0 votes
1 answer
102 views

I had the idea to make a CnR where the cops present non-golfed code and the robbers present the golfed version. I found out it was a dupe :( but wanted to know. If you have a CnR challenge and make ...
user avatar
3 votes
1 answer
172 views

If someone posts a cops-and-robbers challenge and the cops' thread is closed / put on hold, for any reason (e.g: unclear what you're asking), what should happen to the robbers' thread? Should it be ...
Mr. Xcoder's user avatar
  • 43k
17 votes
1 answer
916 views

Non-free languages are not allowed to participate in Cops and Robbers challenges. And that's a good thing. If you choose an obscure non-free language, no one will be able even to attempt solving it ...
Martin Ender's user avatar
  • 199k
2 votes
1 answer
209 views

To keep a concise title I have left out a few details, but here is the dilemma: I have a cops post that has not yet been cracked. I would like to reward the first person to figure out my solution ...
Wheat Wizard's user avatar
  • 104k
23 votes
2 answers
793 views

I want to add a loophole about random stuff in CnR challenges to the standard loophole list, but I have a hard time formulating the post in a way that won't result in a lot of "... but what about xyz?"...
Stewie Griffin's user avatar
  • 46.9k
4 votes
2 answers
380 views

When answering a CNR challenge it's common to get the response: "Well done, but that was definitely not what I had in mind". I feel like it should be perfectly fine for anyone to post a second crack ...
Stewie Griffin's user avatar
  • 46.9k

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