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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7
votes
5answers
872 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, ...
8
votes
2answers
384 views

The “foo” encoding

This puzzle has been solved. Please skip to the bottom of this question for the answer. Introducing the mysterious foo encoding... based on the common computer programming template variables ...
177
votes
10answers
19k views

Game of Life: Kill the Sun

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. You are free to modify any of the red cells, but only those, ...
4
votes
1answer
203 views

What does one do to decrypt this?

'Encrypted': 10101110001011101000000001110111000101011100011101110000000011101110100010111000111010111011100 Context: This is simpler than you think. So simple the solution to this problem would be ...
11
votes
3answers
5k views

My co-workers left me a message

While refactoring a massive chunk of old code, I found a rather curious section of code commented out that wasn't there the day before. Can you tell me what it means? ...
8
votes
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? ...
12
votes
2answers
1k views

Yet another movie line on the Linux terminal

What famous quote does the following terminal session refer to? $ ps -o ppid= -p $u 28342 $ echo $$ 28342
35
votes
1answer
4k views

Chuck Norris vs. This Question

public var c: = Infinity; public var w:Array = [,<...
9
votes
1answer
506 views

Yet another movie quote hidden in Linux

Inspired by this question and this question, can you guess the famous movie quote hidden in this Linux block? ...
13
votes
1answer
1k views

Another Linux movie command

Inspired by this question, here's another Linux command representing a famous line: cp -a ~she ~ Which line is it?
72
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2answers
8k views

What famous line does this Linux command line represent?

The following shows a Linux command line with a # prompt: ...
3
votes
2answers
148 views

Tiling rectangles with Hexomino plus rectangle #3

Inspired by Polyomino T hexomino and rectangle packing into rectangle See also series Tiling rectangles with F pentomino plus rectangles and Tiling rectangles with Hexomino plus rectangle #1 ...
7
votes
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 ...
14
votes
2answers
527 views

Tiling rectangles with W 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 ...
2
votes
3answers
400 views

Coding puzzles with pen and paper

At work we are doing a coding competition on hackerrank – it is real coding – you are given input and you have to code a program that produces the correct output. Now, I would like to promote this ...
2
votes
1answer
137 views

Where is my brother?

Couple days ago, my brother went missing. It seems like he's ran away from home. I decided to search his computer, to see if there are any clues to where he might have gone. All I've found was this ...
11
votes
3answers
2k views

A Programmers Riddle

A programmer friend left me a riddle: ...
2
votes
1answer
161 views

Breaking into your friend's computer

You're trying to break into your friends laptop. However, his computer is password protected. Luckily he has a password hint on his computer. The password you are looking forˏ is not easy like ...
4
votes
1answer
155 views

Where is my coworker from? [duplicate]

My new coworker sent me some code. He wants me to figure out where he was born. I believe there are some hints within the code, but I cannot figure it out. Here is the code block: ...
1
vote
3answers
153 views

Looking for a place

Seems overwhelming but pretty simple. clue.txt http://junewi.000webhostapp.com/testing/clue.txt tdHCR6ieFHNqUv1zQHE0KRiAfypNTApKi2xlN4CMYK2beP3M1u2mgUvRvDmx0M8heyKebUVEsGcbHrnymUIeviUN/...
9
votes
1answer
380 views

First Cryptography Puzzle

When adam and eve sinned, apple was the key. Lies of the Serpent, they both believed. Alternate: 56 108 87 97 119 53 97 43 57 49 68 105 66 51 121 115 84 54 120 51 81 65 61 61 I'm looking for just ...
4
votes
3answers
207 views

Critters Ate My Clue

I recently visited a rummage sale at my local community college, which was trying to get rid of a ton of old and outdated equipment in storage to make way for a new Makerspace. As I browsed through ...
4
votes
0answers
122 views

Honda tutu del moto - Words which say something

You find a paper lying on the sand. Does it mean something ... an imgur maze, maybe ? Cultures reserve glasses. Twin economists migrates with tails in a fine risk. Conglomerate ... voo dun saga ...
6
votes
1answer
299 views

Base what? Oh, great, now I need magic

This cipher's too hard to solve by itself. This short riddle provides sufficient help. You must consult the fifth man; He'll lend a hand, And less information quite appropriate. <...
6
votes
2answers
191 views

Mathematical formulation for Dr. Eureka

I have to prepare an algorithm to solve the puzzle part of Dr. Eureka, a multiplayer game from Blue Orange Games. This is part of a research project that also involves computer vision and robotics. ...
5
votes
1answer
310 views

How to choose the next board in the 8-puzzle?

I hope to have your help to solve the problem I am facing. I'm trying to make an 8-puzzle solver but I'm in doubt about how to select the next board, from the one they have already given me. Below I ...
13
votes
4answers
3k views

A dice game, what is the optimal strategy?

Alice was walking on the street when she came across a man playing with a die. She could not help trying to check if the die was loaded and while she was concluding that it wasn't loaded, the man ...
52
votes
3answers
3k views

Regular Expressions

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22
votes
1answer
836 views

Code Movie Wall

An entry in Fortnightly Topic Challenge #36: Twisted Classics 1 I'm thinking of a movie. The Connecting Wall below (click it for a bigger version) should have made guessing the movie really simple, ...
5
votes
2answers
240 views

Tiling rectangles with Heptomino plus rectangle #6

Inspired by Polyomino T hexomino and rectangle packing into rectangle See also series Tiling rectangles with F pentomino plus rectangles and Tiling rectangles with Hexomino plus rectangle #1 ...
3
votes
2answers
136 views

Tiling rectangles with Heptomino plus rectangle #4

Inspired by Polyomino T hexomino and rectangle packing into rectangle See also series Tiling rectangles with F pentomino plus rectangles and Tiling rectangles with Hexomino plus rectangle #1 ...
6
votes
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 ...
5
votes
1answer
241 views

Tiling rectangles with Hexomino plus rectangle #1

Inspired by Polyomino T hexomino and rectangle packing into rectangle See also series Tiling rectangles with F pentomino plus rectangles and Tiling rectangles with Hexomino plus rectangle #1 Next ...
2
votes
1answer
131 views

Tiling rectangles with Heptomino plus rectangle #3

Inspired by Polyomino T hexomino and rectangle packing into rectangle See also series Tiling rectangles with F pentomino plus rectangles and Tiling rectangles with Hexomino plus rectangle #1 Next ...
12
votes
2answers
1k views

Tricky wild goose-chase puzzle

Your obnoxious little brother loves to outwit you. He asks you to find the message hidden in the following image You are determined and ready to teach your brother a lesson. But can you ?
26
votes
1answer
1k views

Self-Description

Part of the Fortnightly Topic Challenge #35: Restricted Title 1 This text has ? l's and ? n's, but its ?th most frequent letter is f. This text also has ? letters that are used ? times or less. Its ...
7
votes
6answers
466 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 ...
12
votes
1answer
405 views

Computational Linguists

An entry in Fortnightly Topic Challenge #35: Restricted Title 1.Computational Linguists In order to help me boost my paltry grades, the professor of my computer class has given me an extra credit ...
-7
votes
3answers
218 views

Function that returns 1 for all numbers equal to or above 1 [closed]

What's a function (intended to use in a Python program) that returns 1 for all numbers that are >= 1 and ...
33
votes
25answers
8k views

I shouldn't have asked him

My roommate (rm) always looks busy in front of his laptop, so I try to start talking to him Me : "Hey, You always look busy, so how do you entertain yourself? Do you have a favorite book, movie, ...
5
votes
1answer
327 views

Permutation At A Railway Track

Engines numbered 1, 2, ..., n are on the line at the left, and it is desired to rearrange(permute) the cars as they leave on the right-hand track. An engine that is on the spur track can be left there ...
5
votes
2answers
232 views

20 right isosceles triangles into a square

Similar: Unlucky tiling: Arrange thirteen right isosceles triangles into a square Five graded difficulty isosceles right triangle into square tilings Two difficult "Seventeen right isosceles ...
2
votes
2answers
143 views

Two difficult “Seventeen right isosceles triangles into a square” tilings

Similar to: Unlucky tiling: Arrange thirteen right isosceles triangles into a square Five graded difficulty isosceles right triangle into square tilings V.hard problem, 20 right isosceles triangles ...
5
votes
2answers
198 views

Five graded difficulty isosceles right triangle into square tilings

Similar to: Unlucky tiling: Arrange thirteen right isosceles triangles into a square Two difficult "Seventeen right isosceles triangles into a square" tilings V.hard problem, 20 right ...
6
votes
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 ...
3
votes
3answers
196 views

Tiling rectangles with U 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 ...
8
votes
2answers
231 views

Tiling rectangles with T 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 ...
9
votes
6answers
1k views

Optimizing month abbreviation to number

(This comes from a real-world requirement.) The idea is easy - if you have the three-letter abbreviated name of a month, say "Jan", get the numeric month number (for "Jan", 1). Sure, sure, pick a ...
15
votes
8answers
1k views

High and low rebus

What may the following represent? $\large\underline{US}$ $\large01100111$ $\large00\Large\color{green}\bullet$ The 3 rebuses give 3 proper nouns. They are in alphabetical and ...
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 ...