199 votes
Accepted

Lock your computer when you walk away!

I guess this is Because
sandbo00's user avatar
  • 1,576
95 votes

Game of Life: Kill the Sun

I found a sun destroyer with just 10 cells filled! It takes 39 generations. As animation:
Anna's user avatar
  • 931
85 votes
Accepted

Game of Life: Kill the Sun

The following is a solution with 34 generations: And, yes, it was really fun to play with it :).
kamenf's user avatar
  • 6,496
70 votes

Game of Life: Kill the Sun

6 cells, 43 and 50 generations I found 11 unique (up to reflection) 6-cell solutions: By the first generation of evolution, they form two identical groups: The first, fourth, and last two patterns ...
2012rcampion's user avatar
  • 18.9k
61 votes

Game of Life: Kill the Sun

23 cells, 41 generations, humorous answer Sorry, I couldn't resist it... The pulsar dies on "magical command" after 41 generations but it takes 23 initial cells. I apologise for the ...
user21465's user avatar
  • 611
61 votes
Accepted

Game of Life: Move the Sun

6 cells, 111 generations I found 12 unique (up to reflection) 6-cell solutions: They all work by the same method as my previous 8-cell solution, forming a house one cell below the top of the base ...
2012rcampion's user avatar
  • 18.9k
54 votes

Game of Life: Move the Sun

I have a solution: I shamelessly stole the upper part from BaSzAt's 8-cell sun destroyer, and, by trial and error, found a 7-cell lower part that generates a new pulsar without interfering with the ...
Ilmari Karonen's user avatar
53 votes

Debugging with printf()

Works in gcc, with 3 characters on the line above: Side note:   To reactivate the printf() add a blank line above it. Another side note:   As ...
humn's user avatar
  • 21.9k
50 votes
Accepted

Debugging with printf()

Well, he can do it by adding on the line before. So that's Or, slightly better, exploit the fact that and make that first line for
Gareth McCaughan's user avatar
50 votes
Accepted

Selective attention: an unusual game

Brace yourself to realise that this puzzle is even cleverer than you first think... This is a special one... The seven-letter answer is: Why? Firstly: Next, notice: To replace the underscores with ...
Stiv's user avatar
  • 138k
49 votes

Game of Life: Kill the Sun

In case anyone is wondering, here is my own solution, which takes 38 generations. (NB: When I made this puzzle, I had no idea if it's even generally solvable. It took me 4 or 5 hours, while having ...
BaSzAt's user avatar
  • 5,667
46 votes
Accepted

Chuck Norris vs. This Question

This looks like because also, X should be ...
Matt's user avatar
  • 10.9k
45 votes
Accepted

Fwd: Re: Karen is missing!

Ok, an excellent puzzle like this deserves a complete answer, so I'm going to bring everything together and fill in the missing blanks... First, we have to determine if there's actually a reason to ...
Alconja's user avatar
  • 37.2k
42 votes

Game of Life: Kill the Sun

I made another one, with a mere 8 cells. It takes 44 generations. As animation:
BaSzAt's user avatar
  • 5,667
39 votes
Accepted

Little bits of food

The answer is Following Dan Russell's partial answer: Thanks to @f'' in the comments, the interpretation of this is:
ffao's user avatar
  • 21.7k
38 votes

Game of Life: Kill the Sun

More humorous solutions (destroy methods) Sorry, I couldn't resist too Call 911 :) 20 cells, 38 generations: Use AI (artificial intelligence), 62 generations:
kamenf's user avatar
  • 6,496
33 votes

Who stole the bitcoins?

Partial - No time to finish it now As was mentioned by Beastly Gerbil the QR-Code decodes to: This points to a new image: With this image: Next Step:
LeppyR64's user avatar
  • 13.4k
32 votes

Computer riddle: I treat vars like D

I like the other answers, but there's a clue that they really don't capture well. This answer is similar to the others, but I think hits some of the clues more accurately than the other answers. You ...
corsiKa's user avatar
  • 1,571
32 votes
Accepted

Bar-coded Message (Reverse Engineering)

Here you can find the files found in the recovered compressed file. The ogg file is distorted, maybe somebody with better audio editing skills can figure out something. The pictures and filenames ...
elias's user avatar
  • 9,612
32 votes
Accepted

Regular Expressions

/straw$/; # (3,5,5) /\d+safety\d+/; # (6,6,2,7) /^\@[67]+$/; # (10,2,2,5,3,6) /(my |the high)way/; # (2,3,2,3,7) /(Thomas|Richard|Harold)...
noedne's user avatar
  • 15.4k
30 votes
Accepted

The Legend of Sally the Cow

The ending is
Rubio's user avatar
  • 41.7k
29 votes
Accepted

The great puzzle

I think it was and the quote is Explanation for those not familiar with SSH: Explanation for the year:
BaSzAt's user avatar
  • 5,667
29 votes

Another idiom for computer programmers

My guess is: Beacuse:
LeppyR64's user avatar
  • 13.4k
28 votes
Accepted

The telltale code

I don't have time to flesh out every detail right now, but the story is clearly Some of the clues that give it away: Some more: In the back-story:
Scott M's user avatar
  • 1,630
28 votes

I hope your internet's working

The answer could have been But is actually Because
Jonathan Allan's user avatar
28 votes

decipher RGXWSTLSQLITL where (ABCDEF=QWERTY)

If ABCDEF = QWERTY, then: 1 Q W E R T Y U I O P = A B C D E F G H I J ...
Rand al'Thor's user avatar
28 votes
Accepted

My co-workers left me a message

Is the message: Because:
AHKieran's user avatar
  • 7,282
27 votes

Fwd: Re: Karen is missing!

The two images differ by at most 1 bit per color per pixel, suggesting that data was encoded in the least significant bit of the image. Now "obviously" the only reason to provide the encoded image ...
2012rcampion's user avatar
  • 18.9k

Only top scored, non community-wiki answers of a minimum length are eligible