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
2answers
183 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. ...
6
votes
1answer
296 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
456 views

Twilight Zelda Guardian Puzzle

I'm playing a game (see here), and in it is a puzzle, which I've made a TIKZ graph seen below for illustration: $\hspace{2.5cm}$ There is one player. The player ($\mathscr{L}$) moves from node to ...
6
votes
1answer
1k views

Junk decryption— a puzzle I found on a wargame site [closed]

I have found this puzzle and I wanted to share it with you to see if anyone can solve it, because I can't figure it out. **Can you put this all together?** From: Agent J To: adib Agent, ...
5
votes
7answers
3k views

How can 1+1 give 10 and 11?

Just a quick, easy sum to pass the time for those at work. This was used as an exercise when I did a programming course to outline the importance of thinking outside the box. It was also used to ...
5
votes
5answers
971 views

Name that Movie (part deux)

I am writing to inform you that I have constructed another set of clues that will each lead you to a movie title. To make it more interesting, each of the movies has something in common. Whatever that ...
5
votes
2answers
232 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 ...
5
votes
4answers
643 views

A tour of 36 cities

Each of 4 people is touring 36 cities separately. Each of the 36 squares in the illustration below represents a city. To make the answers shorter, each city has been given a 1-character name, from A-Z,...
5
votes
3answers
656 views

The work of William Shakespeare?

sONneT NUmBEr 18 -- ShAlL i COMPArE theE to A SUMMeR's day? ThOu aRT MOre lOvElY aND more TEMpEratE. rOUgH wiNDS dO ShAkE tHE dArLIng buDs of MAY, anD SuMmER's lEASE HaTH aLl ToO ShOrT A datE. ...
5
votes
1answer
227 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 ...
5
votes
1answer
2k views

Image steganography/ hidden message inside image

I have the following image I'm new to solving puzzles and figuring them out, and I have no idea how to approach decryption of this image or how to solve it. I've tried running it on some image ...
5
votes
1answer
300 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
1answer
290 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 ...
5
votes
1answer
379 views

Unfair tiling puzzle

Your goal is to make two squares of the same size from a set of rectangles. Each of the rectangles has an aspect ratio of $1:2$. Select two sets of rectangles from the list: ...
5
votes
1answer
252 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 ...
5
votes
2answers
195 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 ...
5
votes
2answers
216 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 ...
5
votes
2answers
659 views

What is an Explosive 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 an Explosive Word™. Use ...
4
votes
1answer
176 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 ...
4
votes
3answers
781 views

It usually is bigger, and comes with a certain lock. What is it?

What is this poem about? I only have it once most of you do too It's easy to imagine how I could have a few It usually is bigger and comes with a certain lock But it's smaller ...
4
votes
3answers
203 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
4answers
2k views

It rhymes and wonders: who am I?

I tossed off this quick one. Does that make me a tosser? I know what is or isn't,   but never what might be; And many claim to know me,   though many disagree; There are no sly ...
4
votes
1answer
367 views

What is your best friend Jake trying to tell you in his email?

You and your best friend Jake always walk two miles to school together every day. On one particular day, when you leave for school, you realize that your friend isn't there. Thinking that he's ...
4
votes
2answers
898 views

Find the cipher algorithm and decode the message

Sam is a computer expert. He works in a Security Company. His son Tim just turned thirteen and is new to C++ programming and ciphertexts . He decides to write a C++ program to make a cipher algorithm. ...
4
votes
1answer
101 views

question of royal proportions

I dont know if this is going to be any good but this is my first attempt at on of these puzzles. The following piece of code relates to a famous saying/phrase/article/piece. ...
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:
4
votes
2answers
216 views

Where am I? -Decoding Puzzle

This is a very short and simple decoding computer-puzzle. Where am I? I am in a known location called 370031. Where is this mysterious person? Clue:
4
votes
2answers
204 views

Applied logic challenge problem

You must determine what can be concluded from the 60 true statements below. The numbers in each statement represent binary values (true / ...
4
votes
1answer
151 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: ...
4
votes
1answer
309 views

A certain partition of 130

Given a multiset of positive integers, its P-graph is the loopless graph whose vertex set consists of those integers, any two of which are joined by an edge if they have a common divisor greater than ...
4
votes
2answers
443 views

Boggling googling

I'm a number for you to evaluate, Googling 'me' gives the drop off the Empire State, Though the great Google finds no results for me, I'm just a pure integer value you'll see. What number am ...
4
votes
1answer
197 views

I expect it to be 57 sometime!

Which famous quote is this simple Java code representing? ...
4
votes
2answers
397 views

A crypto-limerick

If you AES the last line, With a key made of something divine, And then you XOR The SHA-1 of "4", FWqY58QhWVqPDX0uQ8C37AYaPeWFab42F2nyuY+zWK/gCV2bo8hIDt6sjon1I8+...
4
votes
1answer
261 views

Find the equality with all digits

$A\tfrac{B}{C}=100$ is the equality where A,B,C are numbers generated by combining all digit values $0,1,2,3,4,5,6,7,8,9$ only once for each digit in total. For example; $123\tfrac{4567}{890}$ is ...
4
votes
1answer
222 views

MathJax minus 1

(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 ...
4
votes
2answers
791 views

A riddle by any other name

On his retirement, Bill Gates left behind a four number combination safe with a dial similar to this. In that safe is a secret that had eluded him many years ago...along with a small fortune of course....
4
votes
0answers
111 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 ...
3
votes
8answers
963 views

An exercise on the powers without using the logarithm function

One can find on the forums a lot of exercise where the pupils call for help to solve their maths, once I came across an exercise similar to this one: Determine with a simple (non-scientific) ...
3
votes
2answers
340 views

Strike me down, and I shall become more powerful [closed]

By hitting me, you make everyone understand why you have attacked all before me, as well as why you will hit all others that come after me.
3
votes
1answer
376 views

What is a Number with Feeling™?

In the spirit of the What is a Word™/Phrase™ series started by JLee, a special brand of Phrase™ and Word™ puzzles. If a number conforms to a special rule, I call it a Number with Feeling™. Use the ...
3
votes
1answer
673 views

Crack the code: JavaRelated

I got a card with a text from a software company, and it tells me to decode it. The only thing written on the card is the following code: ...
3
votes
3answers
323 views

My component can be stricter than me

My component can be stricter than me. I'm used to read from not a wire, but a wave. You may use me where I'm used, an example is right in front of your eyes, and I am alive, though some parts have ...
3
votes
3answers
191 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 ...
3
votes
2answers
651 views

The door of death!

You have been taken prisoner and thrown in a dungeon. You have escaped your cell, are standing in front of two identical doors. One will lead you to freedom, the other to a place where you will die a ...
3
votes
2answers
145 views

The fantastic matrix

Here's another question that I have been asked in an interview lately. Let $M$ be an $n × n$ matrix whose values are $”+”$ and $”-”$. M is called fantastic if it is possible to make all it's values $”...
3
votes
5answers
454 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:
3
votes
2answers
1k views

No shoot Sherlock: Test your internet and detective skills with this one!

Clues I have hired Sherlock Holmes to find something for me. We are near my home at an outdoor event and queuing for the refreshment tent. I suspect that the object is to be found somewhere in this ...
3
votes
1answer
328 views

What does this thing do?

$$(d+(5m+m/9)/2+5y/4-y/C+y/CD+1/(m/3+1)*(2-(1/(y\%4+1)+1/(y\%CD+1)-1/(y\%C+1))))\%7$$ What does this thing do? Explain. Can you make it simpler i.e. fewer characters (I will give a nice bounty for ...
3
votes
2answers
146 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 ...
3
votes
1answer
187 views

Pain Brings Joy

When I search for pain, it brings such joy What is it that I seek? Hint: