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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
201 views

MathJax looks kool

(This puzzle relies on familiarity with MathJax, the mathematics renderer that is automatically available for use in answers here at Puzzling Stack Exchange. Examples and more information can be found ...
7
votes
3answers
773 views

Starring MathJax

Twinkle, Twinkle, little star... Having enjoyed @Humn's recent MathJax puzzles (MathJax exposed and MathJax re-flex), I decided to contribute some of my own. This one is a classic $\rm\TeX$ exercise,...
7
votes
2answers
372 views

Stealing the bitcoins back

Introduction In the last challenge, you found out who stole the bitcoins. Now is the task to steal the bitcoins back. I didn't manage to steal them back so I'm going to give you the hints that I ...
31
votes
2answers
2k views

The Time Machine works but my friend is gone!

So my friend Fred and I have been developing a time machine. I know it sounds impossible but we think we've hit a breakthrough! Fred has had a successful test run but he didn't tell me where he was ...
1
vote
0answers
278 views

Image Recognition Riddle [closed]

Given this picture: And this picture: Could you solve the riddle? Nota bene: The mysterious dot prints below the letters are the UTF-8-encoded solutions (doubly encoded in the case of the ...
1
vote
1answer
155 views

Can you help me figure out this band?

So, that super cool coworker of mine was impressed at how I got the password to the staff party. I didn't tell him I got help from you guys, though, so he's given me another challenge! Instead of his ...
10
votes
1answer
656 views

Dragons: Myth or MathJax?

Ever use MathJax to display mathematical expressions?   Expressions related to fractals? Ever used it to display fractals themselves?!   The time has come. These fractals are based on the ...
11
votes
2answers
773 views

Determining Call Chain

There were 25 kids in a class and each kid had some best friends. To simplify the problem, let's call each kid by their initial name. Here is a list of each kid's best friends: ...
23
votes
1answer
553 views

The life of a Knight: Conway style

So I was thinking about Conway's game of life and the ridiculous kinds of patterns that can be made (Things that move across infinite space etc) and then I thought, hey could a chess knight do this as ...
-7
votes
2answers
531 views

A Maze of Colors

I'm back and I have another maze for you. This time it'll be an image with squares of color. Start at the yellow block and end at the red block, both of which are at the bottom border of the maze. ...
6
votes
1answer
994 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 ...
6
votes
2answers
504 views

MathJax re flex

MathJax mirror on the wall, what is the fairest code of all? Let’s find the minimal replacement for (replace this line) in the following MathJax code ...
5
votes
1answer
197 views

I expect it to be 57 sometime!

Which famous quote is this simple Java code representing? ...
15
votes
3answers
1k views

For which numbers does the order of reversing their digits and squaring not matter?

This was a question made up by a friend who doesn't have SE. Let the function $r:\mathbb Z^+ \rightarrow \mathbb Z^+$ reverse the digits of a number (in base 10) that it is applied to. In addition, ...
-4
votes
1answer
269 views

What is the answer to the following puzzle? [closed]

Observe the following question carefully and answer accordingly. iVBORw0KGgoAAAANSUhEUgAAAA8AAAAPCAYAAAA71pVKAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsIAAA7CARUoSoAAAAAhSURBVDhPY3wro/...
8
votes
2answers
362 views

I will introduce you to my wife and children, what family am I?

My family is building trust (<>.<>) I have three meaningful children :3 Parents (mom/dad) always stay beside each children <3 However, I often change my children if I don't like them!...
9
votes
2answers
625 views

MathJax exposed

  WARNING   $ \color{red}{\boxed{\boxed{ \sf ~~{ \large N \, S \, F \, P \rlap{\small P\&CG~SE} }~~~ \huge\raise-.2ex\...
13
votes
2answers
591 views

Help me find my friend!

I need your help! My friend has gone missing and I have no clue where he could be! However, he did manage to get a message out to me: Kidnapped. Send help. I am here: port town. $\left\lfloor\...
7
votes
2answers
562 views

Vacation Destination

So, a while ago I asked a friend to plan our next vacation. I had to tear him away from his computer and this site to get him to do anything. Which was probably my first mistake. I don't know if he is ...
2
votes
3answers
2k views

ᚫᛄ•ᛟᛋᚱ•ᛗᚣᛚᚩᚻ•ᚩᚫ•ᚳᚦᚷᚹ•ᚹᛚᚫ•ᛉ

This is the rune page which has been found on-line in May 2014 released by mysterious cyber group. It consist ciphered text which is the hint to the included hash. Transcript: ᚫᛄ•ᛟᛋᚱ•ᛗᚣᛚᚩᚻ•ᚩᚫ•ᚳᚦᚷᚹ•...
8
votes
1answer
963 views

What does this program try to tell?

I tried to open an non existent page on stackoverflow and received "Page Not Found" warning however didn't understand what the code next means. Do you know what SO try to tell?
2
votes
2answers
634 views

Can you help me understanding the Stones game?

I am trying to understand the Stones game stated here. The stones game is a simple game, it is also a very old game which is unknown to almost everyone. The game starts with N stones and M ...
1
vote
11answers
2k views

Launching the missiles [closed]

The software for launching the missiles was designed so that both captain and co-captain had to press their LAUNCH button at the same time in order to trigger a ...
1
vote
1answer
311 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.
3
votes
5answers
463 views

A really harsh short puzzle

I may be burned at the stake for this one so "sorry" in advance! When does pot and top make it without a why? (You may need a particular object to figure this one out...) Hint Hint #2:
2
votes
10answers
465 views

What am I? Animal edition

I reveal hidden secrets, where nanoscale put me there. I exist in a honker -- Maybe a carapace too. What am I? Hint: Hint 2: Hint 3:
21
votes
2answers
3k views

What is this mysterious image?

Recently, my friend who lives in Italy sent me an email. This was its contents: Hi, I've got some news which you should be happy about. But I've seen you around on Puzzling.SE, so I though I'd ...
6
votes
2answers
465 views

How do you escape the prison?

You are a wrongly-accused prisoner in a high-security prison, where you have been sentenced for life. However, one of the guards believes your story, and has given you a single chance to escape. He ...
4
votes
1answer
174 views

What does this represent?

#actions /* 0,1,0,0 */ .words /* 0,0,1,0 */ Hints: Hint 1: Hint 2: Hint 3: Hint 4: Hint 5: Hint 6: Hint 7: Hint 8:
13
votes
1answer
665 views

Protip: Don't leave your computer unlocked during a guess-the-song challenge

Me and my buddy, Jim, were playing a guess-the-song challenge. Of course, I was winning. (Don't tell him I said that!) After he left, I looked at my computer, and saw this written in gedit: ...
7
votes
1answer
270 views

My New Computer is Malfunctioning

This is weird! I recently bought a brand new (but very cheap) computer, and there's something wrong with it. I downloaded some MP3s onto it, and now every time I open my music program and try to ...
10
votes
2answers
344 views

Only Losers Read the News

Only Losers Read the News Note the enigmatic tag. It's not meant to be clear what you're seeking.
10
votes
2answers
2k views

What movie quote does this represent?

This describes the quote: ...
17
votes
1answer
2k views
21
votes
10answers
6k views

Another idiom for computer programmers

One of my (many) mottos: ...
179
votes
1answer
25k views

Lock your computer when you walk away!

Well this is strange. I forgot to lock my monitor when I walked away from my desk, at work, and one of my co-workers decided to have a little fun. When I got back, I found this little C# console ...
19
votes
1answer
2k views

The great puzzle

Someone one was trying to find out something, according to the following UNIX commands. ...
6
votes
3answers
626 views

What question is my computer asking me?

I need your help. I think my computer is gaining sentience. I went to a play, but when I got back this file was saved on my desktop: ...
28
votes
2answers
2k views

Little bits of food

You will come across a question. Answer it.
9
votes
6answers
2k views

A mosquito is born at T=0 and after 2 seconds makes a new mosquito every second, how many mosquitos at T=8.5? [closed]

One mosquito is born at T=0 and after 2 seconds it makes a new mosquito, and another every second thereafter. All such mosquitoes have this same property and do not die. How many mosquitoes there are ...
89
votes
6answers
9k 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: ...
57
votes
5answers
7k views

Game of Life: Move the Sun

Based on Game of Life: Kill the Sun Conditions are the same: Below is an initial state for Conway's Game of Life with a single pulsar. Living cells are white. The area marked with red is your base. ...
6
votes
1answer
1k views

A penguin encoded message

There once was an elf who wanted to send a message to Santa. This elf was a penguin rider and had a large amount of penguins so he laid them in a row with some on their bellies and some on their backs....
19
votes
1answer
842 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"? ...
2
votes
1answer
657 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
744 views

The Worst Part about Coding

Torture I do you I am better than brainf*** I love String Theory What am I? Hint:
14
votes
5answers
523 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 ...
7
votes
1answer
308 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 ...
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 ...