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

For puzzle experts out there I'm certain this will seem trivial. Our daughter recently conned my wife and I into purchasing interlocking foam squares for her bedroom floor. On each square is a ...
373 views

### A conversation about logic gates

You are in a room with four buttons and a piece of paper. There is a weird dialogue about logic gates on the paper. Hello, my favorite logic gates are AND and NAND . I said Hello And he said ...
408 views

### What would Lincoln say?

I got asked this question on a job interview, I am not sure if this is a right place to ask but here it is: If Abraham Lincoln were to give an address today, what would he say about us? Hint: 63, ...
1k views

### A riddle and a line of text

I have a bit of pseudocode for you, and then an encoded string. The pseudocode will help you untangle the string. It's not the most easily understood pseudocode, and that might (just might) make your ...
189 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. ...
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. <...
460 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 ...
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, ...
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 ...
972 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 ...
261 views

### map 5 unequal ranges to id

This is actually coming from a business place, but it's all about being able to do math tricks, and that's why I'm posting here. I want to implement the following function: ...
238 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 ...
645 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,...
660 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. ...
238 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 ...
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 ...
318 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 ...
303 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 ...
383 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: ...
257 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 ...
197 views

### I expect it to be 57 sometime!

Which famous quote is this simple Java code representing? ...
197 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 ...
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 ...
686 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 ...
193 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 ...
783 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 ...
206 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 ...
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 ...
399 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 ...
929 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. ...
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. ...
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:
218 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:
448 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 ...
210 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 / ...
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: ...
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 ...
402 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+...
264 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 ...
223 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 ...
806 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....
119 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 ...
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) ...
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.
396 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 ...
688 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: ...
324 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 ...
194 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 ...
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 \$”...