Questions tagged [computer-puzzle]

A tag for puzzles dependent upon some degree of computer literacy - for instance, requiring basic familiarity with operating system usage, encryption or programming.

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6
votes
1answer
999 views

Retrieve a phrase by assembling the string puzzle

You’ve never seen such a verdant shade of green as the leafy tops of the trees that now form a focal point up ahead, peaking over the high and solid concrete walls which surround Eden. The colour ...
2
votes
1answer
662 views

Am I in or Am I out?

There is a very simple logic-based programming language called M35. Here is how simple it is. It has $3$ (yes three) instructions: Load acc with $1$ Add $3$ to acc Multiply acc by $5$ Bob wants to ...
11
votes
6answers
759 views

The Worst Part about Coding

Torture I do you I am better than brainf*** I love String Theory What am I? Hint:
89
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6answers
10k views

Fwd: Re: Karen is missing!

From: Ada Hughes <ahughes@fib.gov> Sent: Thursday, April 7, 2016 7:03 PM To: Joe Dorsen <jdorsen@fib.gov> CC: Jason Bernz <jbernz@fib.gov>; IT Guys <cis@fib.gov> Subject: Re: ...
19
votes
1answer
923 views

Oh no! A hacker has taken control of my computer!

It seems that some guy called Magick has taken over my computer. Well, there does not seem to be any harmful stuff done at least, but this picture keeps appearing on my screen. "HACKED by Magick"? ...
7
votes
1answer
329 views

Binary on a diet

How can you make binary data less filling? Remove the 1s, of course. OO O OO O OO OOOO OO OO O O OOO O OOOOO OOO O O OOO OO OO OO O OOO OO OOO OOOO ...
1
vote
1answer
408 views

Hexadecimal puzzle

Can anyone figure this puzzle out? Puzzle: Shift by 0x83F Hint 1: Hint 2: I was given the puzzle and hints and I know the output is supposed to be a password.
13
votes
2answers
1k views

Which country am I thinking of?

Fill in the gaps with the answers of the rebuses, and then answer the question: Which country am I thinking of? It's → 2 ↓↲ And they will be the ...
41
votes
3answers
1k views

The telltale code

The other night, while writing this Java class that could be serialized into a socket, I fell asleep and had a weird dream. In my dream, when I ran the program, the socket and the class object ...
8
votes
1answer
527 views

What song are these lyrics from?

function me(something){ something++; } something != same; Can you guess the song based on the lyrics above?
7
votes
1answer
373 views

Time to unlearn. What's this movie quote?

This Java snippet describes a quote from a movie. Can you find the quote? void function (int number, int attempts) { { if (number > 1) { do { System.out.println('something'); ...
2
votes
2answers
424 views

What is the result of the sum?

$A_1$: lateral-thinking 0H828JD1FGHODB82JOO $A_2$: computer-puzzles 01111011 $A_3$: visuallateral-thinking (Sorry if you are colorblind..) $A_4$: ...
14
votes
2answers
2k views

Quick Puzzle: What is it?

What is it? Is it zebra? 0 0 1 0 1 1 0 1 1 1 1 0 0 0 1 0 0 1 1 1 0 1 0 1 0 0 1 1 0 1 1 1 1 0 1 1 0 1 1 1 1 0 0 1 0 1 0 0 1 1 0 1 1 1 1 0 1 1 1 1 0 1 1 0 0 1 0 1 0 0 1 1 0 1 1 1 1 0 1 0 0 1 1 0 1 1 1 ...
8
votes
4answers
4k views

Find the hidden message

The Clues All the information you might need is here in the post UmVtZW1iZXIgdGhhdCBhdCBmaXJzdCB5b3UgYXJlIG9mZiBieSBvbmUu DRMExcuKJrKSGE/...
14
votes
5answers
566 views

To each his own

You are a graduate student in theoretical mathematics, dabbling every so often in some interesting but equally useless computer science theory. From the beginning of the year, Professor Carl Hayden ...
12
votes
4answers
1k views

The Recursive Song

This is a revival attempt of the Fortnightly Topic Challenge. Easter is coming, time to hide some Easter eggs. As you probably know programmers hide them in program code. This type of Easter eggs ...
6
votes
1answer
4k views

Image steganography/ hidden message inside image

I have the following image I'm new to solving puzzles and figuring them out, and I have no idea how to approach decryption of this image or how to solve it. I've tried running it on some image ...
9
votes
1answer
280 views

Octospider Cousins

This was inspired by the octospiders in the Rama series by Arthur C. Clarke. Reading the series is not a requirement for solving the puzzle and actually wouldn't help at all besides being able to say, ...
7
votes
1answer
1k views

Junk decryption— a puzzle I found on a wargame site [closed]

I have found this puzzle and I wanted to share it with you to see if anyone can solve it, because I can't figure it out. **Can you put this all together?** From: Agent J To: adib Agent, ...
6
votes
1answer
415 views

What would Lincoln say?

I got asked this question on a job interview, I am not sure if this is a right place to ask but here it is: If Abraham Lincoln were to give an address today, what would he say about us? Hint: 63, ...
25
votes
9answers
10k views

Computer riddle: I treat vars like D

Little 'bout my age: far from that of B Yet in my syntax, you will find some C The way I treat vars, that is much like D I do take objects, but I'm not like E If it starts with F, you'll know it's not ...
6
votes
2answers
385 views

When hackers hike

One day you were taking a hike in some foothills somewhere near the East Coast of the US. It was clear another hac– umm, hiker had already been there when you came across the following munged ...
15
votes
1answer
1k views

Decipher the clues, escape the prison!

Decipher the clues, escape the prison! The guard at the prison, where you have been locked up for misuse of USB ports, has given you one chance to escape, by typing in a certain word. A keyboard is ...
11
votes
2answers
410 views

A curious circuit

During our latest space mission to Mars, humankind has retrieved a curious alien circuit. Our historians think it must be a calendar of some sort. After speaking with some alien linguists, we know ...
15
votes
3answers
2k views

Trying to understand an unusual timestamp encountered on the web

I am writing an API to crawl a popular website, eksisozluk, kind of like Turkey's reddit, but more text based. On this website, you can get a list of the popular posts from the path /basliklar/...
10
votes
2answers
756 views

The lone builder

You are a lone builder. You have to build a city on a 10x10 initial empty grid. You can place: a street, which is a blue cell on the top of any cell, a tomato shop, which is a red cell on any cell ...
1
vote
1answer
172 views

Find the numbers in sequence (Created by PC App) [closed]

Hi all. This image is a series of number in sequence created by computer app. You can see there are five numbers in above row and five numbers in row below. 1) Pls find what will be the numbers ...
11
votes
1answer
763 views

Figure out the language

I recently watched a documentary where they talked about messages sent into space and how they imagined aliens figuring out how to understand them. They used math and geometry in clever ways. I ...
3
votes
1answer
804 views

Crack the code: JavaRelated

I got a card with a text from a software company, and it tells me to decode it. The only thing written on the card is the following code: ...
30
votes
3answers
9k views

What secret is this massive technical puzzle hiding? [riddles and data puzzles]

There's a game development company which released a mysterious "countdown to reveal" web page, and the page is designed pretty fancy, so everyone in that gaming community is curious about this. This ...
3
votes
2answers
348 views

Strike me down, and I shall become more powerful [closed]

By hitting me, you make everyone understand why you have attacked all before me, as well as why you will hit all others that come after me.
9
votes
1answer
253 views

One, two, and three weeks from now

I just came across this note in my office! Date of writing: Sept. 9th, 2015 In exactly one week from today, and then a week from that date and then another week afterwards, something will ...
8
votes
2answers
1k views

The Magician's Card Game

A magician by the name of Jason carries a deck of cards with him everywhere he goes. He has a game where you can say any phrase and a specific card will correspond with that phrase. The goal of the ...
0
votes
1answer
291 views

This code shouldn't be working [closed]

Today I wrote some C# code to generate all subsets of a set. It all worked correctly but then I realized about I'd made a rookie mistake. The puzzle here is not that the code is not working but rather ...
61
votes
12answers
21k views

XOR - Is it possible to get a, b, c from a⊕b, b⊕c, a⊕c?

Just got a simple question from a friend; still thinking. Let's share it! Is it possible to get a, b, c when you have a⊕b, b⊕c, a⊕c ? where ⊕ is the boolean ...
13
votes
2answers
1k views

Cryptic message from a former SYSOP

Your sysop recently quit due to what the law division calls "internal struggles". Less fancily, he hated you, and he hated his job. As a parting gift, he left you a program entitled SwanSong.c. Being ...
-1
votes
1answer
771 views

The devil virus [duplicate]

A somewhat easy puzzle for those familiar with Linux. The Devil has found a way to make a Linux virus that, once executed on the right Linux machine, will break every single computer in the world ...
2
votes
2answers
1k views

No shoot Sherlock: Test your internet and detective skills with this one!

Clues I have hired Sherlock Holmes to find something for me. We are near my home at an outdoor event and queuing for the refreshment tent. I suspect that the object is to be found somewhere in this ...
20
votes
3answers
2k views

Puzzling 101: Sums of seventeen numbers

After reading a bit in Meta and the help section, I'm still not sure whether this qualifies as a "good" puzzle in the spirit of the site, but the votes will show - I liked it when I encountered it, ...
7
votes
6answers
416 views

Me and my opposite

I am the most powerful, a group of people. My opposite was once my rival, able to change between others. We can both be found in the same surroundings, often doing very different things. For example, ...
28
votes
5answers
2k views

What does this Java main() method represent?

The main() method in the following Java program is a text rebus. What does it represent? ...
7
votes
2answers
497 views

Name that Song (part dos)

Below is a rebus set, each of which unveils the lyrics of a song. Your job is to name the song and artist, as well as provide a translation for the rebus elements. 1. $\delta{u(mind)} \approx \delta{...
30
votes
6answers
3k views

Five Linux command line rebus puzzles

Solve the following 5 text rebuses, which are in the form of Linux (bash) command lines. Rebus #1 (solved by Prem) # type beep sound > file.txt 2> file2.txt ...
-1
votes
4answers
433 views

Enigmatic Boxes

  b25lIGVhc3k gb25lIHRvIH N0YXJ0Lg==   ...
6
votes
3answers
619 views

What does this say?

A geek friend of mine said that this was what he was listening to and I'm apparently supposed to figure it out: ...
13
votes
2answers
467 views

Comparatortionist: The $M_Q$ Functor

The Problem At the intersection of mathematics, computer science, and insanity, we find the $M_Q$ functor${}^1$. $${M_Q} = {\Phi _{{s_1},{s_2}}}\left\{ {\begin{array}{*{20}{l}} {E \leftarrow {\Phi ...
3
votes
2answers
694 views

The door of death!

You have been taken prisoner and thrown in a dungeon. You have escaped your cell, are standing in front of two identical doors. One will lead you to freedom, the other to a place where you will die a ...
8
votes
1answer
712 views

Guess the book/movie?

What book am I talking about (this book has been made into a movie too)? 'c'lee_&_le_choke l8_(! - ial)ee Once the puzzle has been solved it will be easy to ...
7
votes
2answers
1k views

The impossible door!

You are standing at the door to a lost temple in Georgia (the former Soviet Republic). You are an expert in lock picking, but there is no keyhole. You then realise that there is a word that will open ...
5
votes
5answers
989 views

Name that Movie (part deux)

I am writing to inform you that I have constructed another set of clues that will each lead you to a movie title. To make it more interesting, each of the movies has something in common. Whatever that ...

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