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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66
votes
6answers
5k views

Bar-coded Message (Reverse Engineering)

This weekend, while totally minding my own business and in no way being suspicious, I just happened to come across the following interesting document: Left page: download as TIFF (100,203,616 bytes) /...
198
votes
1answer
28k 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 ...
2
votes
2answers
126 views

How can I create a programmatic solution to a formation of numbers problem?

There is a common formation-of-numbers puzzle in which the solver is supposed to take predetermined collection of numbers, permitted operators, and a desired result; then perform mathematical ...
1
vote
0answers
96 views

I need help deciphering what looks like a binary message

I was watching a YouTube video and it’s filled with secret messages and codes. The last two codes were in binary and inserting them into a translator provided correct answers. However, that's not ...
8
votes
2answers
6k views

Unseen, but Hidden in Plain Sight

This riddle has a single, one word answer, with an explanation as to how you found it. You may be able to make a good, or even correct, guess from just the contents of the poem below, but if you've ...
59
votes
1answer
2k views

Selective attention: an unusual game

There's a park behind the local basketball courts, where I like to go for quiet time. The other day, a group of thirty people arrived with a basketball as I was sitting down. One sat next to me, ...
4
votes
1answer
640 views

Guess the algorithm

Here you are seeing part of a pattern I created with my computer. Can you either reproduce it or describe the algorithm I used?
-3
votes
3answers
636 views

mmm mmmmmmmmm mmmmmmmmmmmmmmmm mmmmmmmm mmmmm mmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmm mmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmmmm

mmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmm mmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmm mmmmm mmmmmmmmmmmmmmmmmmmm mmmmmmmm mmmmmmmmm mmmmmmmmmmmmmmmmmmm mmm mmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmmm ...
3
votes
5answers
540 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:
7
votes
1answer
349 views

She Lia Squared: Our daughter asked, “How many words can it make?”

Our daughter recently conned my wife and I into purchasing interlocking foam squares for her bedroom floor. On each square is a different letter of the alphabet. To cover her entire floor we had to ...
2
votes
1answer
825 views

Challenge on ASCII Codes

My friend shared a challenge puzzle with me but I don't have any idea how to solve it. I believe that it's related to ASCII characters.
6
votes
1answer
749 views

What's the last number in my wordy number sequence?

I have a wordy number sequence, partially shown below: $ {1, 45.2548, 1262.6650, 32768, 390625, 10077696, 282475249, 3037000499.976, 31381059609, ... }$ Can you find the last number in the sequence? ...
4
votes
1answer
363 views

This rebus is gold (and loud)

What television programme does this rebus stand for? Why is the rebus gold* and loud? ...
4
votes
3answers
820 views

Computer puzzle using functions

Write the function that operates as stated below: In: "get" Out: "2069" In: "more" Out: “5191716" In: "insight" Out: "209912231915" Hint: First, figure out how the function works & then ...
6
votes
1answer
343 views

Can You Find a Tower of Hanoi Word?

Consider a simple Tower of Hanoi set consisting of three rods and three disks. This tower has an optimal solution of seven moves; these seven moves are the only ones allowed in what follows. For the ...
9
votes
2answers
2k views

No Time to Die, Period

Inside MI6's server farm in the middle of the night, the operator's eyes skittered frantically over an intercepted message: The development of our new APG code has been coming along nicely; I've ...
20
votes
1answer
2k views

Pythonic Purity Puzzle

You are looking for a ten-letter word. Perfection is displayed not when there is nothing left to add, but when there is nothing left to take away. ...
8
votes
1answer
360 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 ...
4
votes
2answers
430 views

My special animal

The answer to this puzzle is an image not hosted on Imgur. The image host and the ID of the image on that host should become clear when solving the puzzle. (SVG source of the above) Exact coordinates ...
6
votes
1answer
658 views

The teacher's favorite animal

A student asked our teacher about her favorite type of dog during a distance learning meeting. She uploaded the image shown below, said it's our homework to figure that out, and left the call. What's ...
2
votes
0answers
281 views

Here's the song, now tell me the title!

You ever have it happen where you know how a song goes, but you forget its title? I've heard you guys are good at figuring stuff out for free, so I'll just drop some notes here and let you guys do ...
7
votes
2answers
373 views

The QWERTY-shortest word

For this puzzle, I define the distance between two letters as the shortest way on a QWERTY keyboard to go from a letter to another with a path. Examples: Q and W are seperated by a distance of 1. 2 ...
4
votes
3answers
251 views

Create a folder using only the mouse [closed]

You are a programmer, you are on your way home from your boring work when suddenly a psychopath hits you on the head, kidnaps you and brings you to their secret den. You wake up in a dark room with ...
5
votes
1answer
246 views

A brain[expletive] sudoku

This is a Sudoku that is also a Brainfuck program. The standard rules of Sudoku apply. The same symbol can not appear twice in the same row, column, or 3x3 box. The grid should also form a functioning ...
1
vote
3answers
183 views

Test of Pentominoes

These are pentominoes, with letter codes: Create 4 yes/no questions which uniquely classify each pentomino. Examples of such questions are: Does it have rotational symmetry? Does it have reflection ...
5
votes
1answer
249 views

Looking for Navigators for the Famous Vega Classic

Do you have what it takes to compete in the famous Vega Classic? Looking for skilled navigators. Apply below. You have a craft that is capable of 10m/s$^2$ acceleration in any direction, and we're ...
11
votes
2answers
2k views

sorting 4 numbers using Min - Max boxes

Min-Max is a box that is capable of determining which of the two numbers is the higher (Max) and which is lower (Min). I need to use minimum amount of boxes in order to sort 4 different numbers (any ...
14
votes
4answers
2k views

What is the password in the image?

For my first puzzle I made this, everything you need is in the image. The goal is to find the hidden password. You must look at the image to solve this puzzle, but here's a transcript of the letters ...
9
votes
1answer
281 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, ...
5
votes
1answer
142 views

Question of royal proportions

This is my first attempt at one of these puzzles. The following piece of code relates to a famous saying/phrase/article/piece. ...
7
votes
3answers
2k views

When should this question be answered?

If you hover your mouse over the time marked in the right-bottom corner of this post, then you will see a string showing the exact time that I post this question, which reads ...
22
votes
2answers
2k views

Regex crossword

I can't believe this old-but-gold piece hasn't been shared here. It's a regex crossword puzzle! Here's a nicely printable PDF. Kudos for this one goes to a competition held by MIT in 2013. The ...
3
votes
3answers
580 views

What is a Limited 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 Limited Word™. Use the ...
3
votes
1answer
200 views

The Burnt Textbook

You and your team have successfully intercepted a message from the enemy, which could win you the war! But the message is encrypted with a difficult cipher, and your textbook's instructions for ...
14
votes
3answers
438 views

Two integer sided equilateral triangles with integer distances

In this figure with two non-congruent equilateral triangles and three-fold rotational symmetry the distance between any two of the 6 vertices is an integer. Can you give a solution? I know only one ...
9
votes
1answer
190 views

Scrabblescrapers

An entry in Fortnightly Topic Challenge #48: Unusual tag mix In this puzzle, you are given a 5x5 grid that you need to populate with a word square, so that the rows and columns form words (as defined ...
6
votes
1answer
253 views

Foo Clue and Who?

A simple puzzle I thought of during a work-from-home-session today. Enjoy :)
11
votes
2answers
412 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 ...
6
votes
1answer
490 views

Stop the robot by changing value of variable Z

You're a computer security expert (i.e a hacker who doesn't break law). Your neighbour is infamous professor MacGoofy himself. He specializes in designing programming languages and programming ...
11
votes
4answers
436 views

Not so boring numbers

This is inspired by this and this and more similar ones. Let us consider formation of a given positive integer N by the following rules You may use only one digit, which one is your choice and you ...
-1
votes
1answer
427 views

JavaScript Puzzle about internationally-known fairy-tale

Hello world! Learning OOP I came up on this Puzzle. We can call this JPuzzle Kinda simple, but no-one gave the right answer yet. Here is the JPuzzle: _=(..._)=>_...
9
votes
1answer
637 views

Puzzles like Sokoban?

I am looking for some puzzles like Sokoban or 15-puzzle but more difficult to solve and satisfy the following requirements: The number of possible moves at each step should be limited, let's say < ...
26
votes
1answer
745 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 ...
4
votes
1answer
197 views

Smudged Sudoku - help me solve it!

One late evening I was making my sudoku. I finally finished until water spilled all over the middle-right block. The only thing I remember is the numbers present in the block (but not their position):...
12
votes
2answers
420 views

A fraction puzzle

This is a puzzle with both the computer-puzzle tag and the no-computers tag. We have the following list of five fractions: $$11/5, 30/77, 1/11, 21/2, 5/7.$$ Starting with an integer $x$, we perform ...
4
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 the mysterious cyber group, Cicada 3301. It consists of cipher text which is the hint to the included hash. Transcript: ᚫᛄ•...
0
votes
2answers
249 views

One-word riddle (possibly python)

The question/riddle is: "Never has a snake given such words of wisdom." The hint is: "Thou shall never pass errors silently!" It is possible to be related to Python, errors or something like that. ...
9
votes
2answers
389 views

Maximize my flags

You are given the next list of 48 flags. For each pair of flags that are side by side, you score 1 point per color they share as a frontier. For instance France and Finland score 1 point thanks to ...
-1
votes
1answer
241 views

Double trouble (Python)

Here's a Python program I like to call an Exam Code Generator ...
6
votes
1answer
214 views

7-QWERTY-distance words

My previous puzzle The QWERTY-shortest word was solved nearly instantly by the effective puzzling community. I also believe it is because the main parameter of the puzzle 4.7 was not perferectly set. ...

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