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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1answer
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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 ...
16
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2answers
1k views

Strategies for creating a cross sums puzzle with a unique solution

I am looking for strategies for creating a puzzle with a unique solution, and ways of testing for uniqueness. Specifically, I'm trying to create cross sums puzzles. How can you create one with a ...
13
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1answer
669 views

Protip: Don't leave your computer unlocked during a guess-the-song challenge

Me and my buddy, Jim, were playing a guess-the-song challenge. Of course, I was winning. (Don't tell him I said that!) After he left, I looked at my computer, and saw this written in gedit: ...
13
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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?
13
votes
3answers
2k views

Restoring order in a deck of playing cards (I)

Michelle has a deck of 52 playing cards, stacked in a pile with their backs facing up. She takes the first 2 cards in the pile, turns them over, and places them at the bottom of the pile. She now ...
10
votes
1answer
663 views

Dragons: Myth or MathJax?

Ever use MathJax to display mathematical expressions?   Expressions related to fractals? Ever used it to display fractals themselves?!   The time has come. These fractals are based on the ...
4
votes
1answer
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 ...
3
votes
2answers
376 views

The most probable key

You broke into John Doe's house and found the safe. It has a combination lock with 4 dials ranging from 0 to 9 each. ...
3
votes
2answers
149 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
246 views

Hackers have created a new scheme to send passwords

Note: Following puzzle was used in certain competition and every detail of task is virtual (This certain competition is not ongoing). Hackers have created a new scheme to send passwords. ...
3
votes
3answers
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 ...
3
votes
2answers
666 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 ...
2
votes
0answers
149 views

A partition of 79633 into thirteen parts [duplicate]

The sum of thirteen positive integers is 79633. If placed appropriately on the vertices of this graph, two of them will be joined by an edge if and only if they have a common divisor greater than 1 (...
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 ...
1
vote
1answer
277 views

What phrase does this program rebus represent?

A lazy software engineer was recently browsing over the source code in his company's code repository (Because he was bored of reading puzzles on Puzzling.SE) when he found the following source code: <...
1
vote
1answer
884 views

The swap puzzle

The swap puzzle Place small coins heads up on the squares marked H and tails up on the squares marked T. Swap the positions of the Heads for the Tails in as few moves as possible. There are two ways ...