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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3
votes
1answer
137 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
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3answers
128 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 ...
0
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0answers
64 views

Guess bunch of chars from the bitwise XOR and AND operations with their counterparts [closed]

I have a puzzle in C that uses XOR. I need to find the values of local variables. All of them ar ebytes encoded apart from local_11 and ...
-3
votes
0answers
103 views

The shortest puzzle (part 2)

You see a scrawled message on your table: ....................!?.?...?.......?...............?....................?.?.?.?.!!?!.?.?.?!.................!.!!!!!!!!!!!!!!!!!!!!!!!!!!!...........!. ...
5
votes
1answer
230 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 ...
8
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3answers
1k 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 ...
3
votes
1answer
179 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
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3answers
423 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
171 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
239 views

Foo Clue and Who?

A simple puzzle I thought of during a work-from-home-session today. Enjoy :)
6
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1answer
459 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
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4answers
423 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 ...
-4
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2answers
430 views

mmm mmmmmmmmm mmmmmmmmmmmmmmmm mmmmmmmm mmmmm mmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmm mmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmmmm

mmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmm mmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmm mmmmm mmmmmmmmmmmmmmmmmmmm mmmmmmmm mmmmmmmmm mmmmmmmmmmmmmmmmmmm mmm mmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmmm ...
12
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2answers
395 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 ...
-1
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1answer
226 views

Double trouble (Python)

Here's a Python program I like to call an Exam Code Generator ...
6
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1answer
197 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. ...
9
votes
2answers
365 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 ...
5
votes
1answer
225 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 ...
-1
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3answers
523 views

Ted's answer had Thomas shocked! “He… he's alive…” he realized

There's this built-in python module, we'll call it mystery. Now, mystery has this function, we'll call it ted. Also, mystery has another function, we'll call it jan. Finally, lets bring Thomas into ...
2
votes
1answer
147 views

Messed up function needs uncovering!

You spent 5 hours to make a simple function that takes in a number, and it will print out a grid with the given number as each of its dimensions. Each square of the grid will have a single circle in ...
2
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2answers
205 views

Magic rotated checkerboard function made in python!

Here's a puzzle for all you python programmers out there: I defined a function that goes like this: ...
12
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2answers
439 views

The art of computer programming

EDIT: I know we are not supposed to edit in new requirements after first posting but as far as I understand it this requirement is implicit in all questions here: Explain your answer! At least a ...
2
votes
2answers
278 views

Find how a is defined with each underscore representing a character

Here is a puzzle for python programmers (python3+): Find how a is defined (for example, a = 2 + True), with each underscore ...
7
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1answer
249 views

Slim at any size?

Recall from ŧhis question that we call a positive integer slimdownable or slim for short if it is part of a sequence of integers where each is followed by itself divided by its length, i.e. its number ...
13
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1answer
464 views

Is $~\let\r\raise\text{3rd.3}\r.6ex{\small3}\r1.1ex{\scriptsize3}\!\:\r1.6ex{\tiny3}\!\;\r2.2ex.\!\r2.5ex.\!\r2.8ex.\!\!\!\!\!\!(~)~$ too much to ask?

You will not be asked to devise a function to find the third-least of $ 3 \raise .6ex {\small 3} \raise 1.1ex { \scriptsize 3}\!\: \raise 1.6ex { \tiny 3} \!\; ...
1
vote
1answer
125 views

Break into Goldbach's safe

You need to unlock a safe by typing in the correct password. All you have is the following note: ...
1
vote
1answer
419 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: _=(..._)=>_...
18
votes
4answers
3k views

I don't want the smallest one, I want the second-smallest one

Inspired by my struggles with a certain open-source online learning platform's grading system: You are working in a computer language with a limited set of built-in functions. You have a set of $m$ ...
2
votes
1answer
147 views

Shut down the laptop!

Here's a computer based riddle for all the linux geeks out there: You just installed Ubuntu 20.04 on your shiny new laptop! The system boots you into your user and shows you the desktop. However, to ...
5
votes
1answer
116 views

Fill in the missing number in this unique sequence puzzle

My friend Ed woke up this morning to find his website defaced. Upon the now altered web page, he found this number sequence: $237,\ 3566,\ 57069,\ \color{green}{???},\ 14600926,\ 233811181$ One of the ...
-6
votes
1answer
123 views

Need help with a online puzzle / riddle [closed]

I found a puzzle on the deep web (http://matrix4ozv2gicar.onion), and I am stuck on access level 2, I am aware someone else posted the same question on the same part as me about a year ago, except it ...
1
vote
0answers
109 views

Searching online catalogs is a pain. Can you tell me if it's worth my trouble?

Searching online catalogs is a pain. Can you tell me if it's worth my trouble? As an example, I searched the following online catalog of a well-known country-wide British outlet for the keyword "...
17
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2answers
367 views

What to make of $\!\:\tt puzzle.\!txt$?

Puzzling Stack Exchange: Don’t even ask where I found the old printout, below, of an uncommented computer program. As I am a leading-edge software solutionaut hone-tuned for elegantly annotated ...
5
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1answer
127 views

Competitive puzzles

Do you know any sort of puzzles that can work in the context of a short competition? In other words, puzzles that have these features: The premise should be fairly simple to follow (but the solution ...
2
votes
1answer
202 views

Based on 9-trains puzzle

Based on this problem, we have got some algorithms that can sort the 9 train cars in a given specific arrangement. But say if the 9 train cars are given in any-arrangement? Say ABC ABC ABC ...
4
votes
1answer
219 views

Find the equation of this surface - The Snowman

Here is a surface that resembles a snowman: Its equation has the form $f(x,y,z)=0$: if a point $(x,y,z)$ satisfies that equations it is shaded, otherwise it is "left blank". Your goal is to find $f$. ...
4
votes
1answer
226 views

How to test a sudoku solver?

I have created a standard sudoku solver using my own algorithm. It relies on a continuous scanning with occasional tuple/pair searching. I am looking forward to test if this works properly. I have ...
15
votes
4answers
2k views

Creating the hardest 10x10 maze

You are given an empty 10x10 grid. You are allowed to paint some of its cells as walls (black), while the remaining cells stay empty (white). A robot is programmed to start in the top-left corner of ...
13
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2answers
566 views

One code to rule them all

Kurt, our crusty old mainframe admin, finally retired last week and I've been given the task of sorting through his files. Most of the files were comprehensible, if not understandable, like his old ~/....
52
votes
1answer
1k 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, ...
11
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2answers
407 views

Make -132,680 from these operations

Make the result $-132,680$ using these operations and numbers: Numbers (cannot be used more than once, but not all need to be used): $2,4,6,8,9,10,11,12,23,27$ Operations (all operations have to ...
5
votes
2answers
312 views

find the word in a multi-stage internet scavenger hunt

The answer can be anything. For you can search a lifetime. To discover the bookmarked answer. You must traverse down the long long walls. Using the number of walls of each frame. The key hides twice ...
7
votes
1answer
286 views

New maths puzzle

The objective is to blacken certain boxes. The numbers outside represent the sum of the numbers contained in the white boxes in the corresponding rows or columns.
4
votes
1answer
189 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):...
8
votes
1answer
222 views

Puzzle of the day - Sudoku Rossini

The arrows outside the grid indicate that the nearest three digits in the corresponding direction are in ascending or descending order (the highest number is always in the direction of the arrow). All ...
3
votes
3answers
574 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 ...
4
votes
1answer
148 views

CAPTCHA Popup test

Solve the cryptic clue. Hidden finance equals to nothing (3, abbr.) Notice the capitalization in your answer. Make sure your capitalization is correct.
4
votes
2answers
738 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 ...
28
votes
5answers
1k views

Google cannot find me

Google cannot find me, reflected I'm lemon and lime, googling 'me' is when you fall, me and meme will answer all. What am I? Line 1 hint: Posted I still Line 2 hint: Take my reflection ...
11
votes
1answer
688 views

What is a Royal Word™?

This puzzle is based off the What is a Word™ and What is a Phrase™ series started by JLee and their spin-off What is a Number™ series. $ \begin{gather*} % set Title text. (spaces around the text ARE ...

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