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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8
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1answer
284 views

What is a Fade Word™?

This is in the spirit of the What is a Word/Phrase™ series started by JLee with a special brand of Phrase™ and Word™ puzzles. If a word conforms to a special rule, I call it a Fade Word™. Use the ...
8
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2answers
234 views

From one color to another

white turns to blue blue turns to red red turns to aquamarine but green stays the same People from StackOverflow might appreciate this one.
8
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1answer
213 views

Once again, another Linux movie quote!

Because I can't get off this linux movie quote train, here is another one! Can you find the famous movie quote hidden in this linux block? ...
8
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2answers
326 views

Count count count! if you can

How many pentagons are there in the shape below by filling the triangles as shows on the second graph? For example if this question was asked for the shape below on the left side, the result would be ...
8
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1answer
874 views

IBM Research Puzzle – 5-ops implementation of erasure code

I found this interesting puzzle on IBM Research Puzzling Page called Ponder This; specifically, here. Design a storage system that encodes 24 information bits on 8 disks of 4 bits each, such that: ...
8
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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!...
7
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6answers
467 views

Tiling rectangles with N pentomino plus rectangles

Inspired by Polyomino Z pentomino and rectangle packing into rectangle Also in this series: Tiling rectangles with F pentomino plus rectangles Tiling rectangles with T pentomino plus rectangles ...
7
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2answers
475 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{...
7
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1answer
1k views

One Very Odd Email

Yesterday, I received a very strange email from a friend of mine. It was originally very hard to read and dribbled with extra characters, but I believe this is relatively the original message. It ...
7
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5answers
873 views

Who killed the president?

(Semi-interactive puzzle) Puzzle 1 You slowly roll out of bed, preparing for the day of solving crime ahead of you. After all, you are the greatest detective the world has ever seen. But at work, ...
7
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4answers
2k views

Find the hidden message

The Clues All the information you might need is here in the post UmVtZW1iZXIgdGhhdCBhdCBmaXJzdCB5b3UgYXJlIG9mZiBieSBvbmUu DRMExcuKJrKSGE/...
7
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1answer
685 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
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3answers
500 views

Tiling rectangles with F pentomino plus rectangles

Inspired by Polyomino Z pentomino and rectangle packing into rectangle Also in this series: Tiling rectangles with N pentomino plus rectangles Tiling rectangles with T pentomino plus rectangles ...
7
votes
6answers
399 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, ...
7
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2answers
213 views

A partition of 1000 into six parts with least and greatest product possible

Find six positive natural numbers, not necessarily distinct, whose sum is 1000 and which, if placed appropriately on the vertices of the following graph, two of them will be joined by an edge if and ...
7
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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 ...
7
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2answers
550 views

MathJax: ones and zeros

Do or do not, there is no try.     — Yoda Here is another MathJax puzzle. The Starring MathJax puzzle involved handling numbers in MathJax, even though there are no count registers or ...
7
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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 ...
7
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3answers
224 views

A 4 x 4 Magic Square with Pairwise Relatively Prime Entries

Find a 4 x 4 magic square of positive integers such that any two of its entries are pairwise different and relatively prime, i.e., have no common divisor greater than 1. What is the least that the ...
7
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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 ...
7
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1answer
271 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 ...
7
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1answer
356 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'); ...
7
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2answers
901 views

What is John's job?

You are a spy trying to find out the job of a man named John. One day, you go up to John's friend, Joe. You tell Joe that if he doesn't tell you what John's job is, you will destroy him. Not wanting ...
7
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1answer
126 views

Statements in Java

Each code block translates to a specific statement in English. There is a theme behind the statements. As code puzzles tend to be "easier" (relative to other PSE puzzles) than expected, it will not be ...
7
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3answers
218 views

When is it worth using Hexadecimal over Decimal?

How many bits does a number need to have, to make it worth using hexadecimal notation of the form 0xHHH...H over its decimal representation of the form ...
7
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1answer
450 views

Reproduce output in picture using a logical input list by introducing a bug

I came across this picture and thought that this would be a fun programming puzzle to work out. (https://www.reddit.com/r/funny/comments/4hjf4y/ill_take_february_tickets_please) (Clearly, the ...
7
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1answer
214 views

Can you give us a statement?

Picture an 11x11 grid. Each cell must contain one character. This can be any ASCII character. The contents of the entire row must validate against both corresponding H regex clues. And the contents of ...
7
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2answers
272 views

Dissect a square into 3:2 non-congruent integer-sided rectangles

(Similar to the recent 3:1 rectangle question) Tile a square completely with rectangles which have aspect ratio 3:2, integral side lengths and all different sizes. In other words selected from 2x3, ...
7
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3answers
784 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
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2answers
373 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 ...
6
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2answers
2k views

I hope your internet's working

I'm new to this StackExchange - I'm more active on programming stack exchanges. So here's a computer-themed puzzle: 4K5L3RdR-PASTE Find the code (6 numbers) That'...
6
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5answers
463 views

What is my name? It's not “traveler”

The answer to this puzzle is my first name. What is it? If no progress is made after a week or so, I'll slowly give hints. It's not too hard of a puzzle, so long as you take everything into account. ...
6
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3answers
634 views

Finding a Russian alphamagic square

The puzzle is to find a Russian alphamagic square (of which there are currently none discovered). Using programming is not necessary. If you do solve the puzzle using programming (which is much ...
6
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3answers
628 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: ...
6
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2answers
737 views

The Hyper-Modern Kidnapper: Crime Scene #4

The Story: As soon as he read the message that Lipwig found, Sergeant Vimes raced home, sirens blaring for traffic to move aside. His daughter was home in her room. His daughter was home in her room. ...
6
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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....
6
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2answers
374 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 ...
6
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2answers
227 views

It's my friend.. again

Yet again, my friend is back at it! Just today, I asked him for something, and he sent me a blank image, though I have a certain feeling it's not blank. You guys helped the last time, but can you ...
6
votes
3answers
294 views

Tiling rectangles with X pentomino plus rectangles

Inspired by Polyomino Z pentomino and rectangle packing into rectangle Also in this series: Tiling rectangles with F pentomino plus rectangles Tiling rectangles with N pentomino plus rectangles ...
6
votes
2answers
1k views

Alone in the corner - who am I?

I'm always alone in the corner of the (usually) black/white surface, Although sometimes people come to me at the time of exit, You have to cross 14 bridges for a vacation from me, I'm half of my ...
6
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2answers
486 views

Alternative lyrics

I've been listening to some Alternative music but the lyrics on my album booklet seem to have some printing errors. Can you help figure out this verse? +2203 166 127 +2282 29.9, -90 (79 75) +...
6
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3answers
612 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: ...
6
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2answers
245 views

Tiling rectangles with V pentomino plus rectangles

Inspired by Polyomino Z pentomino and rectangle packing into rectangle Also in this series: Tiling rectangles with F pentomino plus rectangles Tiling rectangles with N pentomino plus rectangles ...
6
votes
4answers
726 views

MS Excel Die Hard

You are John McLane, and Simon Gruber is back in town. This time he booby trapped 50 nuclear power plants across the US, and sent you a laptop he prepared, along with the following note: Any ...
6
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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 ...
6
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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 ...
6
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1answer
305 views

you probably read this wrong!

Read this carefully: ‮114 116 108 111 https://repl.it/010010010100‮11000110110001011000 What's my message? Hint:
6
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2answers
466 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 ...
6
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1answer
995 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
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2answers
231 views

Challenging 15 rectangle tiling problem

This will test you, a computer will definitely help. Just one set of $1:2$ aspect ratio rectangles this time, but $15$ of them. Short side only is listed. The challenge is to arrange them into a ...